Year 2021

1.1 Thursday, May 27, 2021

1.2 Thursday, May 20, 2021

1.3 Thursday, May 13, 2021

1.4 Thursday, April 29, 2021

1.5 Thursday, April 22, 2021

1.6 Thursday, April 15, 2021

1.7 Thursday, April 1, 2021

1.8 Thursday, March 25, 2021

1.9 Thursday, March 18, 2021

1.10 Thursday, March 11, 2021

1.11 Thursday, February 25, 2021

1.12 Thursday, February 18, 2021

1.13 Thursday, February 11, 2021

1.14 Thursday, February 4, 2021

1.15 Thursday, January 28, 2021

1.16 Thursday, January 21, 2021

1.17 Thursday, January 14, 2021

1.18 Thursday, January 7, 2021

1.2 Thursday, May 20, 2021

1.3 Thursday, May 13, 2021

1.4 Thursday, April 29, 2021

1.5 Thursday, April 22, 2021

1.6 Thursday, April 15, 2021

1.7 Thursday, April 1, 2021

1.8 Thursday, March 25, 2021

1.9 Thursday, March 18, 2021

1.10 Thursday, March 11, 2021

1.11 Thursday, February 25, 2021

1.12 Thursday, February 18, 2021

1.13 Thursday, February 11, 2021

1.14 Thursday, February 4, 2021

1.15 Thursday, January 28, 2021

1.16 Thursday, January 21, 2021

1.17 Thursday, January 14, 2021

1.18 Thursday, January 7, 2021

1.1.1 Top new questions this week

1.1.2 Greatest hits from previous weeks

1.1.3 Can you answer these questions?

1.1.2 Greatest hits from previous weeks

1.1.3 Can you answer these questions?

Is Internal‘StringToDouble broken in 12.3?

in V 12.3, expression in notebook shakes when scrolling mouse to edit them. How to stop this eﬀect?

Programming language prototyping in Mathematica

WriteString to TCP socket appears to be broken in Mathematica 12.3

DirichletCondition doesn’t always work with RegionBoundary

What are the key reasons for the performance improvements in 12.3?

Default window size too small in version 12.3 (in Windows 10)

in V 12.3, expression in notebook shakes when scrolling mouse to edit them. How to stop this eﬀect?

Programming language prototyping in Mathematica

WriteString to TCP socket appears to be broken in Mathematica 12.3

DirichletCondition doesn’t always work with RegionBoundary

What are the key reasons for the performance improvements in 12.3?

Default window size too small in version 12.3 (in Windows 10)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246449

I believe `Internal`StringToDouble`

was the only way to fast convert string into numbers.
Now in V12.3 it was removed: `Internal`StringToDouble["1"]`

asked by Murta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2266 17 votes

answered by Itai Seggev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4848 20 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246400

I noticed in V 12.3, when trying to edit an expression in a cell, and moving/scrolling the mouse, the expression itself shakes. It seems to auto-resize or adjust while one is editing it. This does not ...

asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 14 votes

answered by MassDefect https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42264 16 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246507

Are you aware of any projects using the Wolfram language resp. Mathematica as an environment to explore the design of programming languages - in particular languages with a focus on mathematics (...

asked by Math Gaudium https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74255 12 votes

answered by Anton Antonov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34008 18 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246444

I have a large codebase in which some functions make calls to Python TCP servers. The code used to work perfectly in Mathematica 12.2, but has not worked since I ...

asked by Shredderroy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9257 11 votes

answered by Dorian B. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23275 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246520

I am trying to solve the heat equation on a circle with a square shaped hole in it. It works:

asked by Pillsy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=531 9 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246476

The built in benchmark test on my stationary workstation shows an improvement from 2.82 to 5.99, all other hardware and operating systems settings the same. This looks very good. My question is: What ...

asked by FredrikD https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1635 9 votes

answered by Dan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42162 5 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246466

After starting Mathematica 12.3, the default window size is like this, it’s too small for me, I dont want to manually drag the window every time. I have tried this,

asked by matrix89 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5379 7 votes

Multivariable Taylor expansion does not work as expected

How to calculate contour integrals with Mathematica?

What does "Tag Integer is Protected" message mean?

Is there an open source implementation of Mathematica-the-language?

How to express trigonometric equation in terms of of given trigonometric function?

How can I plot a graph of an integral?

Find eigen energies of time-independent Schrödinger equation

How to calculate contour integrals with Mathematica?

What does "Tag Integer is Protected" message mean?

Is there an open source implementation of Mathematica-the-language?

How to express trigonometric equation in terms of of given trigonometric function?

How can I plot a graph of an integral?

Find eigen energies of time-independent Schrödinger equation

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=15023

The basic multivariable Taylor expansion formula around a point is as follows:

\[ f(\mathbf r + \mathbf a) = f(\mathbf r) + (\mathbf a \cdot \nabla )f(\mathbf r) + \frac {1}{2!}(\mathbf a \cdot \nabla ) \]

asked by matheorem https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4742 65 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 73 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=34073

How to calculate the integral of \(\frac {1}{\sqrt {4 z^2 + 4 z + 3}}\) over the unit circle counterclockwise for each branch of the integrand?

asked by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152 42 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 64 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=6738

(Newbie question)

For every function I deﬁne I get this message: When I close and reopen Mathematica, and re-enter the function deﬁnition, I don’t get the message anymore. What does it mean?

asked by stevenvh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1450 11 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=4454

I’ve seen questions before such as "What is the best open-source equivalent for Mathematica?", but that speciﬁc question (and that line of inquiry in general) cares more about the computer algebra ...

asked by sblom https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=178 124 votes

answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 86 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=434

How can I express a trigonometric equation / identity in terms of a given trigonometric function?

using following trigonometric identities

asked by Prashant Bhate https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=99 30 votes

answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 37 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=78451

I want to plot the following function:

\[ \int \left (\frac {\Gamma (x+1)}{2}-\frac {\Gamma (x-1)}{2}\right ) \, dx \]

asked by Anixx https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=651 4 votes

answered by k_v https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=24727 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=32293

I’m trying to get the eigenvalues of a one dimensional time-independent Schrödinger equation,

\(-\frac {h^2}{2m_0}\frac {d^2\psi }{dx^2}+U(x)~\psi =Ei~\psi \)

where \(U(x)\) is some potential and Ei is the ...

asked by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 49 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 46 votes

What is "Flatten" doing to my elements?

Inconsistent boundary and initial conditions when solving sine Gordon equation

Step-by-step solution for a Limit

Inconsistent boundary and initial conditions when solving sine Gordon equation

Step-by-step solution for a Limit

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246395

Here’s some of my code. x1 results in returning the position of a list in a `{{{n1}},{{n2}}...}`

.
Im trying to ﬂatten it such that the list reads out as `{n1,n2,n3....}`

some how it’s adding
elements.

asked by MT Cup https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79502 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246596

I have been trying to solve the following sine Gordon equation \(\partial _{x,x} u(x,t) - \partial _{t,t} u(x,t) - \sin (u(x,t)) - \alpha \partial _t u(x,t) + \gamma = 0\), for \(x \in [0,15]\) and

asked by t Lê Thành https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=68852 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246560

Is it possible in Mathematica to get a step-by-step evaluation of some functions? Such that Mathematica is outputting not only the result but all the stages that have led to it? If so, how does one do ...

asked by putti.123 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80178 1 vote

1.2.1 Top new questions this week

1.2.2 Greatest hits from previous weeks

1.2.3 Can you answer these questions?

1.2.2 Greatest hits from previous weeks

1.2.3 Can you answer these questions?

Stable ﬂuids code for electromagnetic mixture application

How can I create an animation showing how a circular sector deformed to a cone?

Dataset from association of lists doesn’t work

Creating the Yin Yang symbol with minimal code

On the ordering of the vertices of a polygon

Is it possible to vary the thickness of curves according to their color code

How can I style a Line like "Glassrectangle"?

How can I create an animation showing how a circular sector deformed to a cone?

Dataset from association of lists doesn’t work

Creating the Yin Yang symbol with minimal code

On the ordering of the vertices of a polygon

Is it possible to vary the thickness of curves according to their color code

How can I style a Line like "Glassrectangle"?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246091

This code has been translated from the original Jos Stam code and improved with some Mathematica functions. It solves problem of viscous incompressible ﬂow with electromagnetic force in a rectangle ...

asked by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388 14 votes

answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246171

I want to create the following animation with Mathematica.

What is the simplest way to do so? My ﬁrst eﬀort:

asked by Kim Jong Un https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42141 12 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 7 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246088

Mathematica 12 on wolfram cloud isn’t rendering the table for an association of lists. According to the documentation you should be able to make columns in the table by:

However I tried this

asked by Ion Sme https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=62529 10 votes

answered by WReach https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=142 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246309

The following code creates the Yin Yang symbol

asked by nilo de roock https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=156 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 15 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245994

Writing:

pts = {{1, 0}, {2, 0}, {2, 3}, {3, 3}, {3, 4}, {0, 4}, {0, 3}, {1, 3}, {1, 0}}; Graphics[{Red, Point[pts], Blue, Line[pts]}]

we get:

and all of this ...

asked by Rolex https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80016 9 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 15 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246125
I have this data `data = Table[{x, Sin[5 x], Tanh[3 x]}, {x, -1, 1, 0.01}];`

which I plot as follows

asked by valar morghulis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26937 8 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246046

I’d like a thick Line to look like `ChartElementFunction -> "GlassRectangle"`

How can
that be accomplished?

asked by Gannicus https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80033 8 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 11 votes

What’s the most diﬃcult multidimensional integral that Mathematica
has solved?

Extract real part of a complex expression better than Re does

Exporting graphics to PDF - huge ﬁle

My Girlfriend is going to prison...Save her with Math

How to plot an ellipse?

Is there something like DensityPlot3D to visualize atomic orbitals?

Calling Correct Function for Plotting DiracDelta

Extract real part of a complex expression better than Re does

Exporting graphics to PDF - huge ﬁle

My Girlfriend is going to prison...Save her with Math

How to plot an ellipse?

Is there something like DensityPlot3D to visualize atomic orbitals?

Calling Correct Function for Plotting DiracDelta

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222184

I am interested in benchmarking numerical integration methods and am trying to develop a wider set of diﬃcult multivariate examples. For my particular methods, I only want to look at non-negative-...

asked by ben18785 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19278 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3306

I have a complex expression with real positive variables only.

Mathematica Input Style:

asked by max https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=796 34 votes

answered by nixeagle https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=814 54 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=1542

I want to draw some basic surfaces, export them to PDF and include them in a LaTeX ﬁle. I create a simple 3D graphics object, for instance with

asked by Matthew Leingang https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=395 109 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=135937

Salacious title, but true story.

asked by Prisoners Dilema https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46025 42 votes

answered by bobthechemist https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7167 23 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=20100

I’m new to Mathematica, and I’m ﬁnding it diﬃcult to plot an ellipse. I tried using

` Plot[(x/5)^2 + (y/3)^2 == 1, {x, -5, 5}, {y, -3, 3}]`

but I’m getting ...

asked by Sriram https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6075 18 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 30 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=32378

I’m visualizing some hydrogen like atomic orbitals. For looking at plane slices of the probability density, the DensityPlot function works well, and with something ...

asked by Peeter Joot https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10 45 votes

answered by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 25 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3506

I am wondering what is the correct function in Mathematica to plot the true impulse function, better known as the DiracDelta[] function. When using this inside of a ...

asked by night owl https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=116 17 votes

answered by Heike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46 19 votes

Speeding up this function?

Error when integrating with constants?

Is there an analog of ArrayQ for datasets?

Error when integrating with constants?

Is there an analog of ArrayQ for datasets?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246242 Is there a way to speed this function?

asked by An old man in the sea. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=11313 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246300

I’m trying to integrate an ellipse: `(x^2)/alpha^2) + ((y^2)/beta^2) = 1`

. I am not sure if
I should have insert constants for alpha and beta or if there’s a way to keep them
there.

This is my code

asked by user80088 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80088 1 vote

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 0 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246152

ArrayQ provides a nice way to check for missing data (speciﬁcally, it checks if the array is ragged). But if you import your data as a dataset, and apply ArrayQ, it will return False for both ragged ...

asked by theorist https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45215 1 vote

1.3.1 Top new questions this week

1.3.2 Greatest hits from previous weeks

1.3.3 Can you answer these questions?

1.3.2 Greatest hits from previous weeks

1.3.3 Can you answer these questions?

Finding "chains" of numbers in a matrix

How to formulate this problem in Mathematica?

Problem with optimal control and Pontryagin’s maximum principle

Sorting Associations by DayName (day of week) using KeySort and/or KeySortBy

Using the PowerPoint’s laser pointer in symbols of plots

How would one add Hyperreals as a new type to Mathematica?

Extract held value from Association

How to formulate this problem in Mathematica?

Problem with optimal control and Pontryagin’s maximum principle

Sorting Associations by DayName (day of week) using KeySort and/or KeySortBy

Using the PowerPoint’s laser pointer in symbols of plots

How would one add Hyperreals as a new type to Mathematica?

Extract held value from Association

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245937

To give some context, this problem is related to music theory. I have a matrix I’m generating with this code:

asked by Eriek https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18649 6 votes

answered by thorimur https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63584 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245908

Say, I have the following expressions

f = R[p] g = S[p]

where R,S are rational functions, and I want to ﬁnd a polynomial such that

asked by nilo de roock https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=156 6 votes

answered by Roman https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26598 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245797

For dynamic system: \(\dot {x}=\frac {df}{dx}+u\) where \(f=e^{-x^2}\) It is necessary to develop optimal control, minimizing criterion: \(J= \int _{0}^{t_f} ((\frac {df}{dx})^2+u^2) \,dt \) Algorithm:

We ...

asked by dtn https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=67019 6 votes

answered by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388 7 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245721

I have an association where the keys are the days of the week:

asked by theorist https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45215 6 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245800

I am interested in exploiting a symbol that is similar to the PowerPoint’s laser pointer in the role of PlotMarkers. Is there any idea to create that!? This symbol ...

asked by Inzo Babaria https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=33967 5 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 12 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245782

Hyperreals are an extension to the real numbers; they formalise the concepts of inﬁnities and inﬁnitestimals as numbers, rather than the named limit points outside of the system of reals and form ...

asked by Julian Moore https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12858 5 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245784

Consider an association which contains a key which must not be prematurely evaluated.
`assoc = <| key :> value |>`

For example, a value of ...

asked by Anti Earth https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=32591 5 votes

answered by Leonid Shifrin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81 6 votes

1 Plot, 2 Scale/Axis

How to perform a multi-peak ﬁtting?

Standard deck of 52 playing cards in curated data?

Is it possible to export the equations from Mathematica to MATLAB?

LaTeXand Mathematica

How can I plot implicit equations?

Calling Correct Function for Plotting DiracDelta

How to perform a multi-peak ﬁtting?

Standard deck of 52 playing cards in curated data?

Is it possible to export the equations from Mathematica to MATLAB?

LaTeXand Mathematica

How can I plot implicit equations?

Calling Correct Function for Plotting DiracDelta

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=627

I would like to plot those two datasets on top of each other. But they have very diﬀerent range on the \(y\) axis. How can I have two diﬀerent axis?

I found the following on the help menu but quite ...

asked by 500 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=172 152 votes

answered by ArgentoSapiens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=92 152 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26336

I am wondering how to implement the multi-peak detecting and ﬁtting in Mathematica.
Following is an example of ﬁtting the data using three peaks (such that the
`data ~ peak1 + peak2 + peak3`

). The ...

asked by Everett You https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1389 55 votes

answered by Silvia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=17 55 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16108

I am not sure how to ﬁnd out what all is included as curated data. For example, are the individual images of each of the 52 cards in a standard deck of playing cards included?

If not, is there a way ...

asked by JohnD https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1629 25 votes

answered by rm -rf https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5 23 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=14035

Is it possible to export the output expressions from Mathematica computations (e.g., equations) in valid MATLAB syntax?

asked by Seyhmus Güngören https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4256 43 votes

answered by rm -rf https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5 48 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=736

I quite often would like to draw graphics in my LaTeXdocuments using Mathematica. I have encountered three problems. I would like to know if there are any workarounds to these problems

I would ...

asked by Thomas Rot https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=227 130 votes

answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 46 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=34668

If you enter the following into Wolfram | Alpha, you get nice graphs:

`graph 4 x^4 + y^2 = 2`

How do you do this in Mathmatica? I realize that these are not ...

asked by Rollie https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10174 40 votes

answered by Timothy Woﬀord https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9391 41 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3506

I am wondering what is the correct function in Mathematica to plot the true impulse
function, better known as the `DiracDelta[]`

function. When using this inside of a
...

asked by night owl https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=116 17 votes

answered by Heike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46 19 votes

Excess lines in the solution plot of vector ODE

Algorithmically imposing a substitution in a diﬃcult integral

How to expand a rational function as a single fraction

Algorithmically imposing a substitution in a diﬃcult integral

How to expand a rational function as a single fraction

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245826

I’ve got an ODE system, which I attempt to solve by two ways: solving the system itself, and using vector ODE. Here is code of ﬁrst way:

asked by Cpp Nosavvier https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79893 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245884

Consider the following integral: \[ I = \frac {1}{\pi c^2} \int \limits _{r=0}^c 2 \pi r\ e^{-\frac { \left ( \sqrt {a^2 - r^2} -\sqrt {b^2 - r^2} \right )}{\lambda }}\ dr \] under the conditions \(a>b>c>\)...

asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245673

This has been annoying me for a long time. I want a rational function to be represented in the form \[\frac {a_nx^n+....a_0x^0}{b_mx^m+....b_0x^0}\] But this seems to be quite diﬃcult. Mathematica ...

asked by grdgfgr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=28163 2 votes

answered by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 0 votes

1.4.1 Top new questions this week

1.4.2 Greatest hits from previous weeks

1.4.3 Can you answer these questions?

1.4.2 Greatest hits from previous weeks

1.4.3 Can you answer these questions?

Replacing duplicates instead of deleting them

RecurrenceTable and While

Speed up averaging of numerically solved diﬀerential equations

FEM: how to redo a composed boundary mesh for better quality?

Were these Images made with Wolfram Language / Mathematica?

How to ﬁnd the repeated elements in a vector

How to separate two regions in DensityPlot

RecurrenceTable and While

Speed up averaging of numerically solved diﬀerential equations

FEM: how to redo a composed boundary mesh for better quality?

Were these Images made with Wolfram Language / Mathematica?

How to ﬁnd the repeated elements in a vector

How to separate two regions in DensityPlot

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245078

My code replaces each repeated element by "X".

asked by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 10 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 18 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2450308

Good day. Let’s take an example from Help on RecurrenceTable

asked by macros https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79485 6 votes

answered by Roman https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26598 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245121

I deals with a coupled system with non-linear diﬀerential equations of ﬁrst order. I perform numerical solution with NDSolve and then use obtained solutions,

asked by Artem Alexandrov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=49992 5 votes

answered by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245050

Suppose you have region with 2 materials: one embedding material matrix containing some particles

asked by Mauricio Fernández https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=24710 4 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 5 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245080

I am currently writing a paper in which Fibonacci Spirals are discussed. In the text of the paper the mathematics of these objects is discussed and the relevant equations and relationships are shown ...

asked by urquiza https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79636 4 votes

answered by ﬂinty https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72682 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245068

Is there a way to write a function where the input is a vector and the output is the elements in the vector that are repeated? I was trying to use something along the lines:

asked by Trashlife https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79628 4 votes

answered by Roman https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26598 7 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245051

I want to separate two regions in DensityPlot similar to the attached image.

In my code and the obtained result, I want to separate the region with less value of one from others. How can I do this? ...

asked by mehrosadat ebrahimi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=40575 4 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 4 votes

How to graph a sphere with cartesian equations?

Parallel and perpendicular symbol from Mathematica to LaTeX

How do I make a 3DPlot using cylindrical coordinates?

What does Compile[] do to make code run so much faster?

How do I clear all user deﬁned symbols?

Formatting legend text font

How can I plot the direction ﬁeld for a diﬀerential equation?

Parallel and perpendicular symbol from Mathematica to LaTeX

How do I make a 3DPlot using cylindrical coordinates?

What does Compile[] do to make code run so much faster?

How do I clear all user deﬁned symbols?

Formatting legend text font

How can I plot the direction ﬁeld for a diﬀerential equation?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=24169

I’m new to Mathematica and I need to ask how to graph a sphere, cylinder, etc.. using cartesian equations.

For example in sphere’s case \(x^2+y^2+z^2=1\)

I tried to use ...

asked by German https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7145 8 votes

answered by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 14 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=46538

I want to get the following expression from Mathematica to LaTeX:

\[ \begin {bmatrix} E_{\parallel } \\ E_{\perp } \end {bmatrix} \]

I have tried to use inbuilt ’symbol’ character from the special ...

asked by Steve Hatcher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13314 20 votes

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 27 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19076

I’m trying to plot a function of the form \(z(r,\theta )\) where \(r \in [0, R]\) for a ﬁnite R, \(\theta \in [0,2\pi [\), and z is the third coordinate, a function of the ﬁrst two. I couldn’t ﬁnd anything ...

asked by Learning is a mess https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5643 19 votes

answered by whuber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=91 26 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2371758

I am looking for an ELI5 explanation of what`Compile[]`

in the Wolfram Language context
does and why it works so much faster than uncompiled code in certain cases. I am trying to
get more insight to ...

asked by anon248 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66458 20 votes

answered by chasly - supports Monica https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34024 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=850

Is there some way to do this other than going to `Evaluation -> Quit kernel`

and ﬁring a
new one up?

asked by niklasﬁ https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=82 99 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 98 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3433

I am using this code to plot a graph, and I am trying to make the font of the legend bigger.

asked by Julia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=525 20 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 25 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8841

I’d like to plot the graph of the direction ﬁeld for a diﬀerential equation, to get a feel for it. I’m a novice, right now, when it comes to plotting in Mathematica, so I’m hoping that someone can ...

asked by Matt Groﬀ https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1735 33 votes

answered by Peter Breitfeld https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=307 26 votes

Artifacts When Plotting Results of Numerical Integration

How to solve a system with inﬁnitely many equations?

Custom multiplication operation between variables

How to solve a system with inﬁnitely many equations?

Custom multiplication operation between variables

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2451018

I am trying to reproduce the following graph of phase shifts as function of frequency.

Please see my code bellow. I used Mathematica to solve for t1 and ...

asked by guestuser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76488 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=245194

I need to solve the following system of (inﬁnitely many) equations. I am looking for \(V(0,0)\)

\(t \in \{0,1,2.....\}\) with one caveat that \(s \leq 1+t\) should hold.

\( s \in \{1,2,3,L-1\}\)

ﬁxed ...

asked by Monire Jalili https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=62240 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2452988

I am constructing polynomial expressions in the variables \(s[0],s[1],...,s[n]\) and I’m trying to deﬁne a new operation to simplify the expression:

asked by David https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72836 1 vote

1.5.1 Top new questions this week

1.5.2 Greatest hits from previous weeks

1.5.3 Can you answer these questions?

1.5.2 Greatest hits from previous weeks

1.5.3 Can you answer these questions?

joining three lists to plot data with errors

Interpreting traditional math

Is it possible to deﬁne conjugate of a function?

Maximal circle packing inside a given square

Some doubts about symbolic equations in Wolfram Mathematica

Count number of balls in each bin, given a two-element sequence of balls and bins

FEM: elastic cylinder under circumferential pressure

Interpreting traditional math

Is it possible to deﬁne conjugate of a function?

Maximal circle packing inside a given square

Some doubts about symbolic equations in Wolfram Mathematica

Count number of balls in each bin, given a two-element sequence of balls and bins

FEM: elastic cylinder under circumferential pressure

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244887

I have three lists:

x = {x1, x2, ...}, y = {y1, y2, ...}, yErr = {y1Err, y2Err, ...}

that I want to join into the following format:

asked by uuu https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42359 7 votes

answered by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244672

There are two ways (afaik) to parse traditional math string to an expression:

asked by Kuba https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5478 7 votes

answered by Kuba https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5478 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244907

Could you help me, please? I have two complex functions of real variable `f[x] and fc[x]`

such that one is a conjugate of another one. I’d like to take a conjugate of an expression that
includes both of ...

asked by Svetlana https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72941 6 votes

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244820

How to pack n equal disks(radius a/2) with maximal area inside a given rectangle ? I’m trying to solve this problem using Mathematicas Region functions. Here my approach: Maximize the area of the ...

asked by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 6 votes

answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244961

I need to perform the following operations using Wolfram Mathematica. I have these equations: \[a b = c+d+e\] \[\frac {d}{f}=g h + i\] \[k=\frac {a}{c}\] I need to obtain \(k\) as a function of: \(a,b,c,e,\dots \)

asked by Skyhawk https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79597 5 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244834

If I have a list:

`{ball,ball,BINDIVIDER,ball,ball,ball,BINDIVIDER,BINDIVIDER,ball,BINDIVIDER,ball}`

The balls and bins can be in any permutation. Then, the ...

asked by apkg https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35029 5 votes

answered by WReach https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=142 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244993

Suppose you have an elastic cylinder of radius \(R\) and height \(H\) and you want to solve the mechanical 3D equilibrium with Mathematica’s FEM. How do you impose a pressure \(p\) only on the cylinder ...

asked by Mauricio Fernández https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=24710 4 votes

answered by user21 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18437 4 votes

Plot data from txt ﬁle?

How to make a Spherical Cow?

What are the most common pitfalls awaiting new users?

My Girlfriend is going to prison...Save her with Math

Plotting the Star of Bethlehem

Generate a Unit Circle Trigonometry

Extract real part of a complex expression better than Re does

How to make a Spherical Cow?

What are the most common pitfalls awaiting new users?

My Girlfriend is going to prison...Save her with Math

Plotting the Star of Bethlehem

Generate a Unit Circle Trigonometry

Extract real part of a complex expression better than Re does

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=5910

I have data in ﬁle.txt which can be expressed by `20000x11`

matrix. I do not want to import
all of these data. How can I plot graph of the column 1 & column 4?

asked by Gokce https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1297 21 votes

answered by user1066 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=106 24 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=125043

Being a theoretical physicist, I always have a great respect for Spherical Cow. So I thought about making one myself. I am not sure how can I create (something considered to be the simplest!) this ...

asked by Sumit https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8070 69 votes

answered by andre314 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5467 76 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18393

As you may already know, Mathematica is a wonderful piece of software. However, it has a few characteristics that tend to confuse new (and sometimes not-so-new) users. That can be clearly seen from ...

asked by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 485 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 288 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=135937

Salacious title, but true story.

asked by Prisoners Dilema https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46025 42 votes

answered by bobthechemist https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7167 23 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236499

Christmas is around the corner! In preparation, consider the polynomial
`f[x_,y_]:= 1/10 (4 - x^2 - 2 y^2)^2 + 1/2 (x^2 + y^2) `

and deﬁne \(r=(f_x,f_y)\) using the ...

asked by fwgb https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44151 30 votes

answered by Roman https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26598 22 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2456

Struggling often with Trigonometry I would like to have some code to generate this Unit Circle Trigonometry. Would be of great help when I need to transform some data :

asked by 500 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=172 18 votes

answered by Mark McClure https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36 32 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3306

I have a complex expression with real positive variables only.

Mathematica Input Style:

asked by max https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=796 34 votes

answered by nixeagle https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=814 53 votes

Understanding the behavior of HypergeometricPFQ

recursively ﬁnd StringCases

How to specify custom Loss function for Predict

recursively ﬁnd StringCases

How to specify custom Loss function for Predict

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244963

this is my very post here, so I apologize for any possible format issue. I am using HypergeometricPFQ functions (more exactly \(_3F_2\)) as approximants for other more complicated functions. Here are ...

asked by avg https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79519 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244663

Can I recursively extract `StringCases[]`

that match a speciﬁc pattern? Here is a minimalist
example (not my actual problem):

asked by Conor Cosnett https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36681 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244702

How can I use `Predict[Xs->Ys, Method->"NeuralNetwork"]`

to predict `90%-quantile`

(instead of mean value)? Utility Function does not work well for this case, because

it assumes ...

asked by Artem Vorozhtsov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61755 2 votes

1.6.1 Top new questions this week

1.6.2 Greatest hits from previous weeks

1.6.3 Can you answer these questions?

1.6.2 Greatest hits from previous weeks

1.6.3 Can you answer these questions?

Is there a neat code to swap elements of a list?

Stokes equations in 2D with traction boundary conditions

Transform a number to a factorial

Stopping condition for FindMinimum / FindMaximum

Eﬃciently compute Minkowski sum of a 2D Region and a Disc of radius r?

Random orthogonal matrix

Detecting patterns in a graph network

Stokes equations in 2D with traction boundary conditions

Transform a number to a factorial

Stopping condition for FindMinimum / FindMaximum

Eﬃciently compute Minkowski sum of a 2D Region and a Disc of radius r?

Random orthogonal matrix

Detecting patterns in a graph network

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244314

I want to swap the list to make a new list as follows. The code works but I’m wondering if there is a neat code, or an elegant way to do this.

asked by anhnha https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18805 9 votes

answered by kirma https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=3056 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244482

This is a follow-up to a previous question (see here). We would like to solve the two-dimensional Stokes equations using the FEM package in Mathematica, when we prescribe traction boundary conditions. ...

asked by Alex R https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=78043 7 votes

answered by Oleksii Semenov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63028 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244566

I came across the need to transform a number into a factorial n, with positive integer n. I have searched in the MMA information but I can’t ﬁnd anything like that. I imagine an input, which veriﬁes ...

asked by zeros https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26849 7 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244313

This seems like it should be a simple question – but I am looking to use a "home made" stopping condition with FindMaximum, while evaluating a very complex function. Printing out the ...

asked by Richard E https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79342 7 votes

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244565

Given a 2D Mathematica Region, e.g. `A = Region[RegionDifference[Disk[{0, 0}, 2], Disk[{2, 0}, 1]]]`

,
how can I grow the region by an arbitrary radius r? For example, ...

asked by Aaron T. Becker https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76690 6 votes

answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 5 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244316

Is there a way to generate real random orthogonal matrices in mathematica? If Q is an orthogonal matrix, it’s properties are

asked by Jasmine https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73364 6 votes

answered by Henrik Schumacher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=38178 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244592

If we create a random graph

Chop[LowerTriangularize[RandomReal[{-1, 1}, {10, 10}], -1], 0.6] /.0 -> \[Infinity] // MatrixForm WeightedAdjacencyGraph[%]

How can ...

asked by Teabelly https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=56986 5 votes

answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 6 votes

What do the X and Y axis stand for in the Fourier transform domain?

Plot, extract data to a ﬁle

Get a "step-by-step" evaluation in Mathematica

How to add a vertical line to a plot

Selecting every n-th element from a list

How to graph a sphere with cartesian equations?

Conversion of Sine to Cosine

Plot, extract data to a ﬁle

Get a "step-by-step" evaluation in Mathematica

How to add a vertical line to a plot

Selecting every n-th element from a list

How to graph a sphere with cartesian equations?

Conversion of Sine to Cosine

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=85139

In Wolfram Mathematica the function Fourier has the following declaration

Fourier[list]

And after a list is given to the ...

asked by user253956 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29958 27 votes

answered by Hugh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12558 61 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19859

I need to save data that Mathematica uses inside the Plot command. The format that I would like to have is:

x1 y1 x2 y2

asked by molkee https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5097 30 votes

answered by Mr.Wizard https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=121 47 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=148

Is it possible in Mathematica to get a step-by-step evaluation of some functions; that’s to say, outputting not only the result but all the stages that have led to it? If so, how does one do it?

asked by Cydonia7 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44 131 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 109 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3561

In the plot below I would like to add two vertical lines at \(x = \frac {\pi }{15} \pm \frac {1}{20}\). How can I do that?

asked by sjdh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=515 64 votes

answered by Ajasja https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=745 83 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=64003 I have a list:

`data = {4, 5, 7, 8, 9, 5, 3, 2, 1, 2, 13, 12};`

I want to take those elements in the list which are located at equal distances, say, every third ...

asked by Suro https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=20003 37 votes

answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 34 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=24169

I’m new to Mathematica and I need to ask how to graph a sphere, cylinder, etc.. using cartesian equations.

For example in sphere’s case \(x^2+y^2+z^2=1\)

I tried to use ...

asked by German https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7145 7 votes

answered by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=67521

I’m solving equations with many Cosines and Sines. And I want to convert all the Sines to
Cosines using trigonometric formulas such as `cos(x)=sin(x+pi/2)`

. How can I do
this?

asked by YongCheol Kwon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23041 4 votes

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 2 votes

RandomInstance of GeometricScene producing unexpected result

Solving an ordinary diﬀerential equation with boundary condition at inﬁnity

How to use ScalingFunctions with Graphics ChartElements

Solving an ordinary diﬀerential equation with boundary condition at inﬁnity

How to use ScalingFunctions with Graphics ChartElements

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244335

Consider the following scene as an example:

asked by user13892 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13892 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244342

I want to solve the following diﬀerential equation ` f''[z] + (1/z)*f'[z] - f[z] + f[z]^3 == 0`

subject to the boundary conditions

asked by HeitorGalacian https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73726 1 vote

answered by Mariusz Iwaniuk https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26828 0 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=244387

How to draw spheres with BubbleChart with a reversed vertical axis? The 3rd example shows the problem (empty plot), likely caused by the transformation, but how to correct it?

asked by HuibH https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70256 3 votes

1.7.1 Top new questions this week

1.7.2 Greatest hits from previous weeks

1.7.3 Can you answer these questions?

1.7.2 Greatest hits from previous weeks

1.7.3 Can you answer these questions?

Are Mathematica’s maps copyright-free?

Find all English words that can be comprised of Element Abbreviations found in the Periodic Table

Eﬃcient uniform sampling of certain Boolean matrices

Incorrect integration from article?

Running Mathematica in ’SpouseMode’

Putting together several ListPlot 2D in a 3D graphic

Combine SortBy with ReverseSortBy

Find all English words that can be comprised of Element Abbreviations found in the Periodic Table

Eﬃcient uniform sampling of certain Boolean matrices

Incorrect integration from article?

Running Mathematica in ’SpouseMode’

Putting together several ListPlot 2D in a 3D graphic

Combine SortBy with ReverseSortBy

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243660

Are the maps available in Mathematica copyright-free? For instance, if I generate the image

asked by sam wolfe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=64001 13 votes

answered by Carl Lange https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57593 24 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243664

This question is majorely inﬂuenced by a meme...

Now, I thought... it would be interesting to see what kind of "passwords" could one derive using Periodic Table :D Hence, I began to work ...

asked by e.doroskevic https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18696 9 votes

answered by creidhne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=41569 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243547

I want to uniformly sample \((0,1)\)-matrices with certain constraints. In particular, I want sum of each row to be rowsum and the sums of columns to equal ...

asked by kirma https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=3056 8 votes

answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 7 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243711

Recently I came across an interesting article by Daniel Lichtblau, where the integral

`Integrate[Abs[x - y]^n, {x, 0, 1}, {y, 0, 1}]`

asked by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152 7 votes

answered by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243859

In this previous question I looked into a deprecated capability of Mathematica from Version 2. Mathematica command that allows it to read my intentions Thanks to all for your answers. I note that ...

asked by MikeY https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47314 6 votes

answered by MikeY https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47314 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243823

I’m trying to put together several diﬀerent 2D plots in a 3D graphics to create a ﬁgure which would be like the one below (taken from https://aip.scitation.org/doi/10.1063/1.4998724 However my ...

asked by AntoineM https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79171 6 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 4 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243776

Suppose I have a dataset, which I want to sort according to two criteria. However, I want the ﬁrst criteria to be sorted ascending, and the second descending. This would require to somehow combine ...

asked by Gabriel Landi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=347 6 votes

answered by SquareOne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19960 3 votes

How to add a front-end to the free Wolfram Engine?

How to express trigonometric equation in terms of of given trigonometric function?

What’s the most diﬃcult multidimensional integral that Mathematica has solved?

Standard deck of 52 playing cards in curated data?

Even Fibonacci numbers

How do I clear all user deﬁned symbols?

How to perform a multi-peak ﬁtting?

How to express trigonometric equation in terms of of given trigonometric function?

What’s the most diﬃcult multidimensional integral that Mathematica has solved?

Standard deck of 52 playing cards in curated data?

Even Fibonacci numbers

How do I clear all user deﬁned symbols?

How to perform a multi-peak ﬁtting?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=198839

https://blog.stephenwolfram.com/2019/05/launching-today-free-wolfram-engine-for-developers/

http://www.wolfram.com/engine/

The Free Wolfram Engine for Developers is available for pre-production ...

asked by Alexey Golyshev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23402 65 votes

answered by Alexey Golyshev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23402 55 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=434

How can I express a trigonometric equation / identity in terms of a given trigonometric function?

using following trigonometric identities

asked by Prashant Bhate https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=99 30 votes

answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 37 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222184

I am interested in benchmarking numerical integration methods and am trying to develop a wider set of diﬃcult multivariate examples. For my particular methods, I only want to look at non-negative-...

asked by ben18785 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19278 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16108

I am not sure how to ﬁnd out what all is included as curated data. For example, are the individual images of each of the 52 cards in a standard deck of playing cards included?

If not, is there a way ...

asked by JohnD https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1629 25 votes

answered by rm -rf https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5 23 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=37266

Today, I found the Euler Project. Problem #2 is

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the ﬁrst 10 terms will be:

asked by xyz https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9627 34 votes

answered by rcollyer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=52 46 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=850

Is there some way to do this other than going to `Evaluation -> Quit kernel`

and ﬁring a
new one up?

asked by niklasﬁ https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=82 99 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 98 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26336

I am wondering how to implement the multi-peak detecting and ﬁtting in Mathematica.
Following is an example of ﬁtting the data using three peaks (such that the
`data ~ peak1 + peak2 + peak3`

). The ...

asked by Everett You https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1389 55 votes

answered by Silvia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=17 55 votes

pure function assignment

Graphics get cropped when wrapped in Hyperlink and Inset in MMA 12.2 (doesn’t seem to happen on 12.1 RPi) Bug?

Does Mathematica have build-in function to compute dimension of square polynomial system?

Graphics get cropped when wrapped in Hyperlink and Inset in MMA 12.2 (doesn’t seem to happen on 12.1 RPi) Bug?

Does Mathematica have build-in function to compute dimension of square polynomial system?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243708

I do not understand this statement from the Introduction to Dynamic tutorial:

asked by Dave https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79143 1 vote

answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 0 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243637

I’ve noticed that wrapping a Graphic[] in Hyperlink[] causes weird things to happen when using ...

asked by Mike H https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79121 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=243849

I’m working with square polynomial systems and wish to know if a (small) system has a ﬁnite number of solutions. That is, if it’s zero-dimensional. I’m not aware of any built-in function to do this ...

asked by Dominic https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47466 1 vote

1.8.1 Top new questions this week

1.8.2 Greatest hits from previous weeks

1.8.3 Can you answer these questions?

1.8.2 Greatest hits from previous weeks

1.8.3 Can you answer these questions?

Head[x] vs x[[0]]?

How to roll a graph on the y-axis

Numerically solving Helmholtz equation in 2D for a Guitar

How to draw the tree in a "pitchfork" form?

Digitizing a geometrical sensor

How Can I Compute The Automorphism Group of a Matroid?

How to make a circular heat map or diagram in Mathematica?

How to roll a graph on the y-axis

Numerically solving Helmholtz equation in 2D for a Guitar

How to draw the tree in a "pitchfork" form?

Digitizing a geometrical sensor

How Can I Compute The Automorphism Group of a Matroid?

How to make a circular heat map or diagram in Mathematica?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242183

Can we say `Head[x] and x[[0]]`

are identical ? In mathematica manual I could ﬁnd : ’The
head is the part with index 0’

But I am not sure whether `Head[x] are x[[0]]`

are really interchangeable in any
...

asked by imida k https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34532 15 votes

answered by Leonid Shifrin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242180

I want to roll the function `f(x)=sqrt(x), x[0,1]`

along the y-axis. I know how to rotate
the graph around a point, but I’m not sure how to rotate along an axis in 2D. Rotating
around a point e.g. (0,...

asked by Guy Foxx https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75736 14 votes

answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 17 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242138

Hi I am new to using Mathematica, so am not too conﬁdent. I am essentially trying to model vibrations of a guitar sound board for a project. It would be great to get some visualisations of the ...

asked by sp96 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77970 11 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242140

How to set the options or other parameters in a TreePlot to draw the branching outside of the vertex? I.e. in a form similar to a dendrogram (but the dendrogram plot itself does not support the ...

asked by Slepecky Mamut https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=48033 10 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242186

I want to quantify the ﬂow from photos taken from a sensor such as this one:

For a limited number of readings, I can use a plot digitization method. However, I need to do this many times for ...

asked by MathX https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=38575 9 votes

answered by MelaGo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63360 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242030

I want to compute the automorphism group of a matroid. This reduces to the following (more general) problem: Suppose I have a list of sets \(\{\{b_{11},\dots ,b_{1k}\},\dots ,\{b_{k1},\dots ,b_{kk}\}\}\) ...

asked by Madeline Brandt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=51040 7 votes

answered by Madeline Brandt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=51040 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242425

Is there any way to make a circular heat map in Mathematica? Thanks for your help! Here is a toy example for regular heat map. Can anyone help me make it to a circular one?

asked by Frankie https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70269 6 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 4 votes

How can I draw the Olympic rings with Mathematica??

Plot, extract data to a ﬁle

What does "Tag Integer is Protected" message mean?

Selecting every n-th element from a list

Labeling individual curves in Mathematica

Help ﬁnd a bright object on Mars!

Plotting the frequency spectrum of a data series using Fourier

Plot, extract data to a ﬁle

What does "Tag Integer is Protected" message mean?

Selecting every n-th element from a list

Labeling individual curves in Mathematica

Help ﬁnd a bright object on Mars!

Plotting the frequency spectrum of a data series using Fourier

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8885

How can I draw the 5 interlocking Olympic rings with Mathematica? (SVG version) Edit

Hard choice, but some pretty cool answers here. I didn’t have 3D answers in mind when I posted the question, but ...

asked by Mike Honeychurch https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77 44 votes

answered by cormullion https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61 23 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19859

I need to save data that Mathematica uses inside the Plot command. The format that I would like to have is:

asked by molkee https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5097 30 votes

answered by Mr.Wizard https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=121 47 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=6738

(Newbie question)

For every function I deﬁne I get this message: When I close and reopen Mathematica, and re-enter the function deﬁnition, I don’t get the message anymore. What does it mean?

asked by stevenvh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1450 11 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=64003

I have a list:

`data = {4, 5, 7, 8, 9, 5, 3, 2, 1, 2, 13, 12};`

I want to take those elements in the list which are located at equal distances, say, every third ...

asked by Suro https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=20003 37 votes

answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 33 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=4444

I need to create a plot for export and inclusion in a report. Is there a better way to label curves than PlotLegends? From what I’ve read and my personal experience,...

asked by Tianxiang Xiong https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1041 63 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 47 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=11819

In today’s news, scientists found a bright object on one of Curiosity’s photos (it’s near the bottom of the picture below). It’s a bit tricky to ﬁnd - I actually spent quite some time staring at the ...

asked by Victor K. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1351 201 votes

answered by Niki Estner https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=242 261 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18082

testData = Table[N@Sin[500 x], {x, 0, 100}]; ListLinePlot[Abs[Fourier[testData]], PlotRange -> Full]

Gives me Which I do not expect because the Fourier ...

asked by C. E. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=731 14 votes

answered by KennyColnago https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=3246 16 votes

Is the fancy script ’C’ mathscrC available in Mathematica?

FormFunction output automatic download

Generating a lattice by \(N^{th}\) iteration of unit cell

FormFunction output automatic download

Generating a lattice by \(N^{th}\) iteration of unit cell

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242074

In mathjax `\mathscr{C}`

gives me the character `$\mathscr{C}$`

that I want. There is a
UTF listing for this character. https://www.compart.com/en/unicode/U+1D49E If I copy
form this webpage and paste ...

asked by Steven Thomas Hatton https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44139 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242097

I want to create a FormFunction that takes in a CSV ﬁle, applies some operations on the data and outputs another CSV ﬁle. I would like for the ouput CSV ﬁle to be automatically downloaded. I have a ...

asked by Gabriel Landi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=347 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=242436

This question is in continuation of the my previous question that was not clearly presented by me at all. I have a unit cell, and I would like to generate a lattice but in iterative order. For ...

asked by L.K. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=15927 1 vote

1.9.1 Top new questions this week

1.9.2 Greatest hits from previous weeks

1.9.3 Can you answer these questions?

1.9.2 Greatest hits from previous weeks

1.9.3 Can you answer these questions?

Why am I getting that \(0.999999999999988 \geq 1.0\) is True?

Can we make an "Outerable" Attribute?

How to ﬁt a curve in a picture with an equation?

Bug with Json payload with diacritics for HTTPRequest

How to plot a "main eﬀect" plot?

generating tuples of ones and zeroes with a ﬁxed number of ones

How to add an attractive potential (migration term) named component to Mass Transport PDE

Can we make an "Outerable" Attribute?

How to ﬁt a curve in a picture with an equation?

Bug with Json payload with diacritics for HTTPRequest

How to plot a "main eﬀect" plot?

generating tuples of ones and zeroes with a ﬁxed number of ones

How to add an attractive potential (migration term) named component to Mass Transport PDE

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241791

I am getting these results:

asked by Craig Carter https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12461 20 votes

answered by Chip Hurst https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4346 23 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241712

We can declare a function to have the Listable Attribute so that it automatically threads over lists in a particular way. For functions of multiple arguments it ...

asked by Tanner Legvold https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=68925 14 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241686

For a curve taken from a picture, is there any method to ﬁt it with an equation if it appears to be some standard curve? For example, in the following picture, the curve looks like an ellipse or a ...

asked by Nobody https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66106 10 votes

answered by mikado https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36788 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241573

Working in the creations of APIs with Mathematica 12.2, I got this problem with diacritics when sending JSON data. Here is a toy code using httpbin.

asked by Murta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2266 10 votes

answered by Kuba https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5478 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241876

I’m trying to make a "main eﬀect" type chart but I haven’t found a way to do it in Mathematica. The main eﬀect plots are the graphs plotting the means for each value of a categorical ...

asked by ALEXANDRE ARARIPE https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77894 7 votes

answered by MassDefect https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42264 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241943

I would like to generate all the tuples of ones and zeros of a given length and with a given number of ones without generating all the possible tuples, which is impossible for tuples of large enough ...

asked by EGME https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53849 6 votes

answered by Roman https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26598 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241642

Wolfram Mathematica 12.2 now features "Named Partial Diﬀerential Equation Terms"

For speciﬁc physics ﬁelds, relevant PDE terms have been packaged as components and augmented with ...

asked by rhermans https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10397 6 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 4 votes

Plotting the frequency spectrum of a data series using Fourier

Is there something like DensityPlot3D to visualize atomic orbitals?

xkcd-style Plots

Generate a Unit Circle Trigonometry

Calculate the 2D Fourier transform of an Image

How can I plot implicit equations?

Oak Island, extending the "Alignment", possible Great Circle?

Is there something like DensityPlot3D to visualize atomic orbitals?

xkcd-style Plots

Generate a Unit Circle Trigonometry

Calculate the 2D Fourier transform of an Image

How can I plot implicit equations?

Oak Island, extending the "Alignment", possible Great Circle?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18082

testData = Table[N@Sin[500 x], {x, 0, 100}]; ListLinePlot[Abs[Fourier[testData]], PlotRange -> Full]

Gives me Which I do not expect because the Fourier ...

asked by C. E. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=731 14 votes

answered by KennyColnago https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=3246 16 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=32378

I’m visualizing some hydrogen like atomic orbitals. For looking at plane slices of the probability density, the DensityPlot function works well, and with something ...

asked by Peeter Joot https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10 45 votes

answered by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 25 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=11350

I received an email to which I wanted to respond with a xkcd-style graph, but I couldn’t manage it. Everything I drew looked perfect, and I don’t have enough command over ...

asked by Amatya https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2039 622 votes

answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 483 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2456

Struggling often with Trigonometry I would like to have some code to generate this Unit Circle Trigonometry. Would be of great help when I need to transform some data :

asked by 500 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=172 18 votes

answered by Mark McClure https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36 32 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=29203

I am new to Mathematica, and using version 8.0.

I would like to calculate the 2D Fourier Transform of an Image with Mathematica and plot the magnitude and phase ...

asked by user8727 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8727 17 votes

answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 33 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=34668

If you enter the following into Wolfram Alpha, you get nice graphs:

`graph 4 x^4 + y^2 = 2 `

How do you do this in Mathmatica? I realize that these are not ...

asked by Rollie https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10174 39 votes

answered by Timothy Woﬀord https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9391 40 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=235815

During these days of COVID, I indulged in the guilty pleasure of watching The Curse of Oak Island - Season 8, Episode 4 Alignment, which viewed last night (1 Dec 2020). During the episode, some "...

asked by Jagra https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=571 13 votes

answered by Carl Lange https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57593 12 votes

ColorFunction in ListContourPlot3D raising error when using more
than one argument

Autocomplete ﬁle argument for custom function

Reduce the time to ﬁnd six integer numbers so that the angle of two vectors equal to Pi/6

Autocomplete ﬁle argument for custom function

Reduce the time to ﬁnd six integer numbers so that the angle of two vectors equal to Pi/6

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241851

The documentation of ColorFunction states that in ListContourPlot3D your chosen function gets the arguments ...

asked by Fidel I. Schaposnik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45839 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241842

When typing Importin a notebook Mathematica suggests to autocomplete the ﬁle path you want to enter or choose a ﬁle using the GUI. Is there a way to let a ...

asked by Gert https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27889 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241633

I am trying to ﬁnd six integer numbers a, b, c, x, y, z so that the angle of two vector
`{a, b, c ...`

asked by minhthien_2016 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5320 1 vote

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 0 votes

1.10.1 Top new questions this week

1.10.2 Greatest hits from previous weeks

1.10.3 Can you answer these questions?

1.10.2 Greatest hits from previous weeks

1.10.3 Can you answer these questions?

Metropolis-Hastings Algorithm - Signiﬁcantly slower than Python

Manipulate for playing along with "Deal or No Deal?"

BoxWhiskerChart - how to show Quartile and other values

Strictly Increasing Sequences of Length n in a List

Wafer Chucking Model

Art on Mathematica: How can I export 4K resolution png images?

Skewed grid in plot

Manipulate for playing along with "Deal or No Deal?"

BoxWhiskerChart - how to show Quartile and other values

Strictly Increasing Sequences of Length n in a List

Wafer Chucking Model

Art on Mathematica: How can I export 4K resolution png images?

Skewed grid in plot

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241402

I would like to code a Metropolis Hasting algorithm and thought I would get the general scheme of things going with a toy example.

I think I got it running but my Mathematica code runs signiﬁcantly ...

asked by Smerdjakov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=55615 13 votes

answered by Henrik Schumacher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=38178 22 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241234

I started building this Manipulate and am certain I can do so on my own, but thought it was fun enough that others might want to try. (If this is some abuse of the ...

asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241231

I have a question in respect of the BoxWhiskerChart. The default functionality of BoxWhiskerChart is that you mouse over it and ...

asked by Jiri https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77351 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241087

I need to determine how many strictly increasing sequences of a certain length (e.g. 5) are contained in a list of integers. I would be very happy if someone could help me. A sequence would be ...

asked by hnh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77559 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241086

I am trying to calculate the pressure required to ﬂatten a bowed wafer. The simple model I am using for the study has a bottom layer (the bowed wafer) pushed against a harder ﬂat surface as shown in ...

asked by martin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77626 8 votes

answered by user21 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18437 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241503

This question is solely based upon \([1]\) and therefore, the reading of \([1]\) could be interesting. How can I export the image created, by the code in the following, with high deﬁnition, beautiful, 4K ...

asked by M.N.Raia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=71570 8 votes

answered by thorimur https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63584 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241405

Is is possible to add a skewed grid in a plot? Consider the following image;

The grey axes are the normal axes (\(\mathbf {e}_1\) and \(\mathbf {e}_2\)), the black axes are transformations \(\mathbf {e}'_1=2\)

asked by mf67 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=55498 8 votes

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 8 votes

Mathematica vs. Python - how does Mathematica compare to
Python’s scientiﬁc computing suite?

Exporting graphics to PDF - huge ﬁle

How do I plot a plane EM wave?

How to create animated snowfall?

Image processing: Floor plan - detecting rooms’ borders (area) and room names’ texts

Calculate the 2D Fourier transform of an Image

What are the most common pitfalls awaiting new users?

Exporting graphics to PDF - huge ﬁle

How do I plot a plane EM wave?

How to create animated snowfall?

Image processing: Floor plan - detecting rooms’ borders (area) and room names’ texts

Calculate the 2D Fourier transform of an Image

What are the most common pitfalls awaiting new users?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=86058

Python’s family of packages for scientiﬁc computing has matured rapidly. I can pretty much replicate all of Mathematica’s functionalities, but with production level and open-source code using the ...

asked by M.R. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=403 49 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 36 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=1542

I want to draw some basic surfaces, export them to PDF and include them in a LaTeX ﬁle. I create a simple 3D graphics object, for instance with

asked by Matthew Leingang https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=395 109 votes

answered by Heike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46 88 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=1987

I would like to display an electromagnetic (EM) wave. I have written code that works, but it does not "shade" the area between the graph and the axes. Both the ...

asked by Rainforest Frog https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=202 22 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 16 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16881

Well, the title is self-explanatory. What sorts of snowfall can we generate using Mathematica? There are two options I suggest to consider:

1) Continuous GIF animations with smallest possible number ...

asked by faleichik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 40 votes

answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 54 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19546

Here is a simple building ﬂoor plan. I would like to derive the rooms as (rectangular) components and the names of the rooms. This is very common representation of building ﬂoor plans.

The problem

asked by s.s.o https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=840 64 votes

answered by Niki Estner https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=242 59 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=29203

I am new to Mathematica, and using version 8.0.

I would like to calculate the 2D Fourier Transform of an Image< with Mathematica and plot the magnitude and phase ...

asked by user8727 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8727 17 votes

answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 33 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18393

As you may already know, Mathematica is a wonderful piece of software. However, it has a few characteristics that tend to confuse new (and sometimes not-so-new) users. That can be clearly seen from ...

asked by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 482 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 288 votes

Front-end rendering issues on Linux

time series - minimum diﬀerencing order needed to remove the trend

How does ‘TextureCoordinateFunction[]‘ works within ‘SurfaceAppearance[]‘?

time series - minimum diﬀerencing order needed to remove the trend

How does ‘TextureCoordinateFunction[]‘ works within ‘SurfaceAppearance[]‘?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241216

I’m using Mathematica 12.2 on Ubuntu Mate 20.10 on an AMD FX(tm)-8120 with a GeForce GTX 1070 Ti NVIDA card. The issue is that I get unwanted horizontal lines just below the cell that I’m working on ...

asked by c186282 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4515 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241097

I was wondering how can I ﬁnd What is the minimum diﬀerencing order needed to remove the trend in a time series? I have a a times series and a TimeSeriesModelFit, which is SARIMA model. I want to ...

asked by Pjana https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75643 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=241245

Following up from `@kglr's`

answer here, I’d like to understand how `TextureCoordinateFunction[]`

works within `SurfaceAppearance[]`

. ...

asked by martin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9923 1 vote

1.11.1 Top new questions this week

1.11.2 Greatest hits from previous weeks

1.11.3 Can you answer these questions?

1.11.2 Greatest hits from previous weeks

1.11.3 Can you answer these questions?

Mathematica 12.1: Don’t use Accumulate or Diﬀerences on Around objects!

How to enter a repeating decimal in Mathematica

How to judge whether two groups of sequences are equal in cycles?

Simplify 1+Sqrt[2]I-Complex[1,Sqrt[2]]

How to correctly calculate the number of seating plans for the 4-couples problem?

How to approximate \(PV\int _0^\infty \frac {\tan x}{x}\text {d}x?\)

Mirror image of graph

How to enter a repeating decimal in Mathematica

How to judge whether two groups of sequences are equal in cycles?

Simplify 1+Sqrt[2]I-Complex[1,Sqrt[2]]

How to correctly calculate the number of seating plans for the 4-couples problem?

How to approximate \(PV\int _0^\infty \frac {\tan x}{x}\text {d}x?\)

Mirror image of graph

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240449

SUMMARY: If a List,TimeSeries etc. of Around objects contains any identical elements,

asked by Aaron Eiben https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72186 14 votes

answered by Sjoerd Smit https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=43522 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240596

I don’t understand how to manipulate numbers with repeating decimal in Wolfram Mathematica language. For example 0.3... does not work as input and I don’t see how ...

asked by Simpleton Jack https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=22399 9 votes answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240325

There’s a set of arrays that I want to remove repeated elements that are equal after rotation:

asked by A little mouse on the pampas https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42417 9 votes

answered by Carl Woll https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45431 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240522

The expression `1+Sqrt[2]I-Complex[1,Sqrt[2]]`

should be zero. In fact,
`N[1+Sqrt[2]I-Complex[1,Sqrt[2]]]`

yields ...

asked by pdmclean https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9154 7 votes answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240357

Four couples a are sitting around a round table, in which husband and wife can not be adjacent. How many diﬀerent seating plans are there? I want to get as many simple calculations as possible.

asked by A little mouse on the pampas https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42417 7 votes

answered by Beny Izd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77079 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240461

What’s the mathematica command to get the numerical value of : \[PV\int _0^\infty \frac {\tan x}{x}\text {d}x?\] where \(PV\) is the principal value.

asked by Ali Shadhar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=67714 7 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 7 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240571

I need to display a directed acyclic graph (say Hasse diagram of partial order) oriented with minimal elements at the bottom, maximal elements at the top as is conventional for Hasse diagrams. I tried ...

asked by Mike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=62210 6 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 7 votes

LaTeX and Mathematica

What’s the most diﬃcult multidimensional integral that Mathematica has solved?

xkcd-style Plots

Finding Limits in several variables

How to use Mathematica functions in Python programs?

Plot data from txt ﬁle?

How to ﬁnd integer solutions?

What’s the most diﬃcult multidimensional integral that Mathematica has solved?

xkcd-style Plots

Finding Limits in several variables

How to use Mathematica functions in Python programs?

Plot data from txt ﬁle?

How to ﬁnd integer solutions?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=736

I quite often would like to draw graphics in my LaTeXdocuments using Mathematica. I have encountered three problems. I would like to know if there are any workarounds to these problems

I would ...

asked by Thomas Rot https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=227 127 votes

answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 46 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222184

I am interested in benchmarking numerical integration methods and am trying to develop a wider set of diﬃcult multivariate examples. For my particular methods, I only want to look at non-negative-...

asked by ben18785 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19278 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=11350

I received an email to which I wanted to respond with a xkcd-style graph, but I couldn’t manage it. Everything I drew looked perfect, and I don’t have enough command over ...

asked by Amatya https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2039 620 votes

answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 481 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=21544

Is there a way to ﬁnd a limit of a multivariable function, like

\[\lim _{(x,y)\to (0,0)} f(x,y)\] with Mathematica?

When \(f\) is continuous, we can use \[\lim _{(x,y)\to (0,0)} f(x,y)=\]

asked by Dominic Michaelis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5899 31 votes

answered by whuber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=91 42 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=4643

I’d like to know how can I call Mathematica functions from Python.

I appreciate a example, for example, using the Mathematica function Prime.

I had search about MathLink but how to use it in Python ...

asked by GarouDan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1058 69 votes

answered by GarouDan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1058 28 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=5910

I have data in ﬁle.txt which can be expressed by 20000x11 matrix. I do not want to import all of these data. How can I plot graph of the column 1 & column 4?

asked by Gokce https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1297 21 votes

answered by user1066 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=106 24 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=42359

Following is the equation: Need to solve for integer values of x,y when a,b lies between -1000 and 1000. Problem is to ﬁnd the number of integer values of pair (x,y) that satisfy it.

asked by Sahil Sareen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12396 2 votes

answered by bill s https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1783 4 votes

Idiomatic pattern for subtracting a function from a list

How can I simplify a symbolic tensor expression?

Nothing showing up on my LogLogPlots

How can I simplify a symbolic tensor expression?

Nothing showing up on my LogLogPlots

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240468

I would like to know a more idiomatic way to subtract a function from a list of pairs than
this: `Table[point-{0,fitFunction[point[[1]]]}, {point,data}]`

I use this ...

asked by Diﬀycue https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46327 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240422

My question is about simplifying tensor expressions. If I have \((a+b)\otimes (c+d)\) The function TensorExpand gives \(a\otimes c + a\otimes d + b\otimes c + b\otimes \) ...

asked by Physor https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74507 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240457

I am trying to make 2 log log plots. One with each equation, a and g. I don’t know why, but the plot is not showing up. My notebook is in the link below. https://imgur.com/a/sXQX0YS

What am I doing ...

asked by QuaﬀyWaﬄes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77475 1 vote

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 0 votes

1.12.1 Top new questions this week

1.12.2 Greatest hits from previous weeks

1.12.3 Can you answer these questions?

1.12.2 Greatest hits from previous weeks

1.12.3 Can you answer these questions?

How to create a spiral using Golden Triangles

How to modify default options of Dataset

How to use Filling in PolarPlot?

How to reduce timing to ﬁnd the integer numbers a, b, c, d, e, f, g, h, k, m of this equation?

How to extract a column (or a row) of a matrix as another column vector/ column matrix (or a row vector), not as a list?

Intuitive explanation of RemoteBatchSubmit[] in AWS for total novices?

Solving a 2D heat equation on a square with Dirichlet boundary conditions

How to modify default options of Dataset

How to use Filling in PolarPlot?

How to reduce timing to ﬁnd the integer numbers a, b, c, d, e, f, g, h, k, m of this equation?

How to extract a column (or a row) of a matrix as another column vector/ column matrix (or a row vector), not as a list?

Intuitive explanation of RemoteBatchSubmit[] in AWS for total novices?

Solving a 2D heat equation on a square with Dirichlet boundary conditions

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239914

Working with students in a pre-calculus class, an application of the sine law. They are working on a question that has them create a Golden Triangle (A golden triangle is an isosceles triangle in ...

asked by Tom De Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=721 14 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 14 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239960

I try to make a dark stylesheet based on the ReverseColor theme. However, dataset headers are barely readable.

This question is related to others such as Question ...

asked by Vly https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47700 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239946

For example: `PolarPlot[{1, 1 + 1/10 Sin[10 t]}, {t, 0, 2 Pi}]`

how to ﬁll color in the space between 2 functions?

asked by DORA https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74396 8 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239874

I use by hand to get this result \[\sqrt {48+5 \sqrt {3}+\sqrt {27+4\sqrt {3}+\sqrt {12+3 \sqrt {3}+\sqrt {4+2\sqrt {3}}}}}=1+4 \sqrt {3}\]

asked by minhthien_2016 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5320 7 votes

answered by yarchik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9469 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240123

Suppose I have a matrix ’mat’ as

mat = Table[Subscript[m, i, j], {i, 5}, {j, 5}]; mat // MatrixForm

I want to extract the ﬁrst column (or any row) as

asked by PoreyS https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=54258 6 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240149

When I read Wolfram’s post about the new features in MMA 12.2 I was intrigued by
`RemoteBatchSubmit[]`

. He wrote:

I have only ever used MMA from my laptop, and never used any other cloud computing or ...

asked by TumbiSapichu https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53229 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240090

I am trying to solve the following heat equation problem on the square [0,1]x[0,1]. \begin{equation*} \begin{gathered} u_t = u_{xx} + u_{yy} + f(x,y,t), \qquad u(x,y,0) = 0, \qquad u=0 \text{ on ...

asked by kroner https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77278 6 votes

answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 7 votes

Crack CAPTCHA using deep learning

How to make an inkblot?

Generate a Unit Circle Trigonometry

Exporting graphics to PDF - huge ﬁle

How to make the digits of go around in a spiral like this?

How to create a new "person curve"?

How do I plot a plane EM wave?

How to make an inkblot?

Generate a Unit Circle Trigonometry

Exporting graphics to PDF - huge ﬁle

How to make the digits of go around in a spiral like this?

How to create a new "person curve"?

How do I plot a plane EM wave?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=143691

Deep convolutional neural networks are very good at computer vision related tasks. Optical Character Recognition (OCR) is one important branch of computer vision. In fact, the convolution neural ...

asked by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 88 votes

answered by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 98 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3345

How to eﬀectively create a polygon that looks like a realistic inkblot? So far, I could come up with this (borrowing from Ed Pegg Jr.’s Rorschach demonstration):

asked by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 86 votes

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 51 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2456

Struggling often with Trigonometry I would like to have some code to generate this Unit Circle Trigonometry. Would be of great help when I need to transform some data :

asked by 500 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=172 18 votes

answered by Mark McClure https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36 32 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=1542

I want to draw some basic surfaces, export them to PDF and include them in a LaTeX ﬁle. I create a simple 3D graphics object, for instance with

asked by Matthew Leingang https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=395 109 votes

answered by Heike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46 88 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=109982

Here is a start.

MapIndexed[Text[Reverse[First[RealDigits[Pi,10,252]]][[Tr@#2]],#]&, Table[{t Cos[t],t Sin[t]},{t,0,16Pi,0.2}]]//Graphics

asked by matrix89 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5379 57 votes

answered by Martin Ender https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2305 73 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=17704

Wolfram|Alpha has a whole collection of parametric curves that create images of famous
people. To see them, enter `WolframAlpha["person curve"]`

into a Mathematica
...

asked by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 85 votes

answered by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 45 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=1987

I would like to display an electromagnetic (EM) wave. I have written code that works, but it does not "shade" the area between the graph and the axes. Both the ...

asked by Rainforest Frog https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=202 22 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 16 votes

Unpacking list of arguments into parameters

Can one preset credentials for ServiceConnect["Twitter", "New"] to allow wolframscript headless use?

Warnings while solving a system of coupled diﬀerential equations

Can one preset credentials for ServiceConnect["Twitter", "New"] to allow wolframscript headless use?

Warnings while solving a system of coupled diﬀerential equations

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240016

I have a list in the following form: ` list = {{a,1,3},{b,1,3},{c,1,3}}`

Now I want to apply this list as parameters for the Sum function so that I end up with the ...

asked by Hell stormer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77333 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=240056

Trying to run some wolframscript code from a server, is it possible to set ServiceConnect credentials in the environmental variables for example?

asked by Tim https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=416 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239861

I have a system of diﬀerential equations, given by

asked by No name https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69573 1 vote

1.13.1 Top new questions this week

1.13.2 Greatest hits from previous weeks

1.13.3 Can you answer these questions?

1.13.2 Greatest hits from previous weeks

1.13.3 Can you answer these questions?

Mathematica cannot seem to properly handle times in the 1 hour
before clocks go back

Dataset Association of Association vs Hierarchical data

Plot many curves on the same graph

Is there any other way to access the n-th element of a BlankSequence?

Periodic von Neumann neighbours

Equivalent of numpy’s newaxis

Plot[Im[f[x]],...] incorrectly gives graph of identical zero function

Dataset Association of Association vs Hierarchical data

Plot many curves on the same graph

Is there any other way to access the n-th element of a BlankSequence?

Periodic von Neumann neighbours

Equivalent of numpy’s newaxis

Plot[Im[f[x]],...] incorrectly gives graph of identical zero function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239480

Using Chicago as an example; According to the current rules for applying daylight saving
time, at `02:00:00`

on the ﬁrst Sunday of November, clocks in Chicago go back 1 hour (from
Central Daylight Time ...

asked by RobertNathaniel https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=60404 24 votes

answered by Patrick Stevens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=30771 22 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239455

I have the following dataset:

asked by Whelp https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1287 10 votes

answered by WReach https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=142 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239609

This plot has 40 curves on the same graph which makes it hard to see. I need to plot them on one graph. So I have an idea to plot to make it easier to see which one is larger or smaller in each range....

asked by anhnha https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18805 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 21 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239659

Consider a named BlankSequence x__. How can I access the n-th element? Is {x}[[n]] the only ...

asked by Money Oriented Programmer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42141 8 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239512

From Carl Woll’s answer here, I have this code for pulling the von Neumann neighbors:

asked by TubularHell https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76599 8 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239518

Numpy has a newaxis object that allows you to insert a new dimension of length 1 into an array. So after ...

asked by Dan Piponi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13642 8 votes

answered by swish https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2490 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239728

Consider

`Plot[Im[(1 + (-1)^(2/3)*x)/((-1)^(2/3) + x)], {x, 0, 1}]`

At least in Mma 11 it gives the following picture: Meanwhile,

asked by Roma Lee https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57495 7 votes

How to create animated snowfall?

Calling Correct Function for Plotting DiracDelta

How to manipulate 2D plots?

Using Export[] sends the ﬁle where?

How can I reproduce this mandala with Mathematica?

Mathematica Minecraft

Plotting the frequency spectrum of a data series using Fourier

Calling Correct Function for Plotting DiracDelta

How to manipulate 2D plots?

Using Export[] sends the ﬁle where?

How can I reproduce this mandala with Mathematica?

Mathematica Minecraft

Plotting the frequency spectrum of a data series using Fourier

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16881

Well, the title is self-explanatory. What sorts of snowfall can we generate using Mathematica? There are two options I suggest to consider:

1) Continuous GIF animations with smallest possible number ...

asked by faleichik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 40 votes

answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 54 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3506

I am wondering what is the correct function in Mathematica to plot the true impulse function, better known as the DiracDelta[] function. When using this inside of a ...

asked by night owl https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=116 17 votes

answered by Heike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46 19 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=7142

When it comes to visual analysis, large datasets or data with intricate internal details often makes plotting in 2D useless, as the outcome is either just a fraction of the full dataset, or no details ...

asked by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 137 votes

answered by IstvánZacharhttps://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 155 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8586

I am trying to use the Export command to convert a list of plots into a `*.gif`

ﬁle,
and the command runs and executes well, but I can’t ﬁnd the ﬁle! Where is it
...

asked by Patrick Da Silva https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1785 37 votes

answered by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 51 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233050

I found this image on the Internet and it is very beautiful. How can I reproduce it? The ideal would be to be able to control the colors of the outside as well as the center.

asked by Susana https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=37778 14 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 35 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19669

Some time ago I asked myself: with all these great graphics and interactive capabilities of Mathematica, what kinds of 3D games can be implemented in it? And the answer which came to mind is ...

asked by faleichik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 167 votes

answered by faleichikhttps://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 241 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18082

testData = Table[N@Sin[500 x], {x, 0, 100}]; ListLinePlot[Abs[Fourier[testData]], PlotRange -> Full]

Gives me Which I do not expect because the Fourier ...

asked by C. E. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=731 14 votes

answered by KennyColnago https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=3246 16 votes

Fourier transform in polar coordinates using built-in hankel transform
of the function constant 1

Exponent combinations

Plot derivative of a real function consisting of a complex function

Exponent combinations

Plot derivative of a real function consisting of a complex function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239754

Like in the table of transforms https://en.wikipedia.org/wiki/Fourier_transform#Distributions,_one-dimensional the FT (Fourier transform) of \(\delta \) is 1 and the FT of 1 is \(\delta \), but in polar ...

asked by user740332 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76926 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239664

How can I have Mathematica represent the product of two diﬀerent bases and exponents as a single power (where possible)? For example, see the product below can be expressed below:

asked by Steve237 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69429 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239796

I obtained the data for the real and imaginary parts of a complex function \(A(x,t)=A_r(x,t)+i A_i(x,t)\) from NDSolve, both are functions of time \(t\) and space \(x\). ...

asked by Enter https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19178 1 vote

1.14.1 Top new questions this week

1.14.2 Greatest hits from previous weeks

1.14.3 Can you answer these questions?

1.14.2 Greatest hits from previous weeks

1.14.3 Can you answer these questions?

Conﬁrm vs Throw

How to use wolframscript to develop ﬂexible command-line tools?

Automatic Method for FindMinimum with constraints

How to reﬁne a boundary mesh with MeshReﬁnementFunction?w

Ugly streaks caused by Arg in a contour plot

Trying to Rotate the North Pole View of a Globe

problem with DelaunayMesh 3D coordinates

How to use wolframscript to develop ﬂexible command-line tools?

Automatic Method for FindMinimum with constraints

How to reﬁne a boundary mesh with MeshReﬁnementFunction?w

Ugly streaks caused by Arg in a contour plot

Trying to Rotate the North Pole View of a Globe

problem with DelaunayMesh 3D coordinates

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239250

Version 12.2 brought us Conﬁrm and Enclose. What’s the point? Is it just that it’s a slightly more convenient syntax than ...

asked by Patrick Stevens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=30771 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239072

I am currently changing a notebook into a wolframscript for a "production" environment, where I plan to pack the script as a standard CLI tool. However I do not know how to implement such an ...

asked by Gravifer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72025 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238999

What is the default method used by FindMinimum with constraints? The documentation says:

"Currently, the only method available for constrained optimization is ...

asked by VarunM https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69094 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239220

MeshReﬁnementFunction works well to reﬁne elements in a deﬁned spatial domain (here \(x>0\)):

asked by Oscillon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13605 8 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 8 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239255

I had a more general question about a similar problem more than two years ago, Getting rid of discontinuities in plots caused by square roots, logarithms, ‘Arg‘, etc, which got lots of interesting ...

asked by https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35000 8 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239294

My goal is to generate diagrams like this.

But I would like to be able to rotate the globe about the North Pole, so that I can represent diﬀerent times of the day. When I use ImageRotate, the ...

asked by David Elm https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44449 7 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239303

I found DelaunayMesh works ﬁne for 2D. For example,

asked by matheorem https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4742 7 votes

answered by user21 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18437 7 votes

Conversion of Sine to Cosine

Extract real part of a complex expression better than Re does

Assign the results from a Solve to variable(s)

Why round to even integers?

Using Export[] sends the ﬁle where?

Formatting legend text font

What do the X and Y axis stand for in the Fourier transform domain?

Extract real part of a complex expression better than Re does

Assign the results from a Solve to variable(s)

Why round to even integers?

Using Export[] sends the ﬁle where?

Formatting legend text font

What do the X and Y axis stand for in the Fourier transform domain?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=67521

I’m solving equations with many Cosines and Sines. And I want to convert all the Sines to
Cosines using trigonometric formulas such as `cos(x)=sin(x+pi/2)`

. How can I do
this?

asked by YongCheol Kwon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23041 4 votes

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3306

I have a complex expression with real positive variables only.

Mathematica Input Style:

asked by max https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=796 34 votes

answered by nixeagle https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=814 53 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=6669

I understand Mathematica can’t assign the results of a Solve to the unknowns because there may be more than 1 solution. How can I assign the 4 values of following result to variables?

asked by stevenvh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1450 56 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 34 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2116

According to the Mathematica help: Round rounds numbers of the form x.5 toward the nearest even integer. For example:

`Round[{0.5, 1.5, 2.5, 3.5, 4.5}]`

gives

asked by wxﬄes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=427 83 votes

answered by Per Alexandersson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=488 51 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8586

I am trying to use the Export command to convert a list of plots into a `*.gif`

ﬁle,
and the command runs and executes well, but I can’t ﬁnd the ﬁle! Where is it
...

asked by Patrick Da Silva https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1785 37 votes

answered by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 51 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3433

I am using this code to plot a graph, and I am trying to make the font of the legend bigger.

asked by Julia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=525 20 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 25 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=85139

In Wolfram Mathematica the function Fourier has the following declaration

`Fourier[list]`

And after a list is given to the ...

asked by user253956 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29958 27 votes

answered by Hugh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12558 61 votes

RegionPlot of the Maximum of a function

How to let Mathematica evaluate a large amount of data

Directed Inﬁnity vs Indeterminant in this output

How to let Mathematica evaluate a large amount of data

Directed Inﬁnity vs Indeterminant in this output

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239047

For the function `fun[a_, b_, x_, y_] = Sin[a x] Cos[b y] (a x + b y);`

corresponding to \(x\) and \(y\), I need a RegionPlot showing the maximum of function
\(fun[a, b, x]\)

asked by Mike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76947 1 vote

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 0 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239107

I have the following code in mathematica which runs perfectly for a small matrix of 21 x 12 matrix. But I really want to test it for a large system. My data is 35844 x 21000 elements, totaling 1.5 GB. ...

asked by shixx597_Min https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=59772 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239335

When I evaluate

asked by user824530 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75136 1 vote

1.15.1 Top new questions this week

1.15.2 Greatest hits from previous weeks

1.15.3 Can you answer these questions?

1.15.2 Greatest hits from previous weeks

1.15.3 Can you answer these questions?

What’s the diﬀerence between these 2 associations?

How can I handle graphics or artworks with millions of points?

ContourPlot3D, grid of cylinders

Distorting image to ensure consistent vanishing point

Export inﬁnite looping GIFs by default

Replace a color in image with hatchﬁlling

MeshReﬁnementFunction on 2D surfaces embedded in 3D

How can I handle graphics or artworks with millions of points?

ContourPlot3D, grid of cylinders

Distorting image to ensure consistent vanishing point

Export inﬁnite looping GIFs by default

Replace a color in image with hatchﬁlling

MeshReﬁnementFunction on 2D surfaces embedded in 3D

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238880

I have 2 associations similar to these simpliﬁed ones:

asked by Coolwater https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9754 16 votes

answered by Leonid Shifrin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81 16 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238735

As a hobby, I am trying to use Mathematica and Wolfram Language as a tool for making generative artworks. Generative art techniques may require drawing millions of points, lines, or curves. For ...

asked by mikabozu https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74721 15 votes

answered by George Varnavides https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=41179 21 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238849

I am trying to make a 3D contour plot that looks like a grid of cylinders to represent the Fermi surface of a metal, like below:

I have no problem generating something that kind of looks like it.

asked by Nick https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76998 10 votes

answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238742

Here’s Giorgio de Chirico’s painting, Ariadne:

The Surrealist artist deliberately broke the rules of geometric perspective, giving the work his characteristic sense of mystery and unease. What would ...

asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 10 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238591

frames=Table[Plot[Sin[x(1+a x)],{x,0,6}],{a,0,2,0.2}]; Export["test.gif",frames]

The above code runs in version 9.0 to get a inﬁnite looping GIF ...

asked by expression https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7339 10 votes

answered by Kuba https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5478 7 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238687

Is it possible to identify a color (say grey in a 3 color Black, Gray and White image) and ...

asked by skyﬁre https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70181 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238705

DiscretizeRegion doesn’t seem to run the supplied MeshReﬁnementFunction when meshing a 2D surface in 3D. For example:

asked by alessandro https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42454 7 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 3 votes

How do I identify the source of a "Tag times protected" error?

Labeling individual curves in Mathematica

How to add a vertical line to a plot

Drawing a square root spiral

Multivariable Taylor expansion does not work as expected

Solving \(L=\frac {3}{2} \sqrt {4 \pi ^2 A^2+W^2}-\frac {\sqrt {5 W \sqrt {4 \pi ^2 A^2+W^2}+6 \pi ^2 A^2+3 W^2}}{\sqrt {2}}+\frac {3 W}{2}\) for \(W\)

Mathematica command that allows it to read my intentions

Labeling individual curves in Mathematica

How to add a vertical line to a plot

Drawing a square root spiral

Multivariable Taylor expansion does not work as expected

Solving \(L=\frac {3}{2} \sqrt {4 \pi ^2 A^2+W^2}-\frac {\sqrt {5 W \sqrt {4 \pi ^2 A^2+W^2}+6 \pi ^2 A^2+3 W^2}}{\sqrt {2}}+\frac {3 W}{2}\) for \(W\)

Mathematica command that allows it to read my intentions

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=11982

I have some code that looks like

Table[ a = 1; b = {2, 3} c = i;, {i, 2} ] which gives an error: Set::write: Tag Times in c {2,3} is Protected....

asked by dearN https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=204 29 votes

answered by Mr.Wizard https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=121 35 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=4444

I need to create a plot for export and inclusion in a report. Is there a better way to label curves than PlotLegends? From what I’ve read and my personal experience,...

asked by Tianxiang Xiong https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1041 63 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 47 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3561

In the plot below I would like to add two vertical lines at \(x = \frac {\pi }{15} \pm \frac {1}{20}\). How can I do that?

asked by sjdh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=515 61 votes

answered by Ajasja https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=745 82 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=66969

Here is a start. I’m looking for a nice way to draw it.

asked by matrix89 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5379 24 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 21 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=15023

The basic multivariable Taylor expansion formula around a point is as follows:

asked by matheorem https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4742 63 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 71 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=57763

When I solve the aforementioned equation for \(W\) or \(A\) on Mathematica I get a long and ugly equation in return, namely one of the solutions for \(W\) is: (attempt to read at your own health)

asked by J.D’Almbert https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19257 8 votes

answered by Alexei Boulbitch https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=788 15 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=194384

In version 2.0 of Mathematica there was a command, ReadProgrammerIntentions[ ] which allowed it rapidly compose code that could solve problems simple to complex, ...

asked by MikeY https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47314 52 votes

answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 38 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238887

The aim of my work is to ﬁnd a value for the complex constant \(\omega \). In order to do that I solve the below system of diﬀerential equations with a manual shooting method: I ﬁrst solve the system ...

asked by mattiav27 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8822 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238596

I’ve been trying to solve this initial value problem using `DSolve[]`

:
\[ \frac {dy}{dt}=1+t\space \sin (t\space y),\quad y(0)=0, \quad t=[0,2] \]

asked by Walser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=60465 1 vote

answered by Mariusz Iwaniuk https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26828 0 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238719

I have a 3D volumetric data (for example, \(64\times 64\times 64\), at each point there is a value) read in from a ﬁle and I want to use ListDensityPlot3D to ...

asked by Dennis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69969 1 vote

1.16.1 Top new questions this week

1.16.2 Greatest hits from previous weeks

1.16.3 Can you answer these questions?

1.16.2 Greatest hits from previous weeks

1.16.3 Can you answer these questions?

How can I use Mathematica to solve a complex truth-teller/liar logic problem?

list-array construction

why do these two Meijer G functions not cancel each other?

How to partition a square into successive halves

Ignoring fractions can lead to correct answer

Context Manipulation within Scoping Constructs

Why does NMinimize not follow MaxIterations?

list-array construction

why do these two Meijer G functions not cancel each other?

How to partition a square into successive halves

Ignoring fractions can lead to correct answer

Context Manipulation within Scoping Constructs

Why does NMinimize not follow MaxIterations?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238461

I have a logic puzzle I want to convert to Mathematica to solve: Person A states, "Exactly two people are truth-tellers," Person B states, "I and Person C are truth-tellers."

asked by Peter Burbery https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76873 16 votes

answered by SneezeFor16Min https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69875 19 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238293

I want to create the list `ix={1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4}`

I can do

asked by geom https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=68502 11 votes

answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 20 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238321

I encountered such expressions in Mathematica
`MeijerG[{{ }, {1, c + 1/2}}, {{0, c, c, c}, { }}, 1] + MeijerG[{{1}, {c + 1/2}}, {{c, c, c}, {0}}, 1]`

which in ...

asked by Jing https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76801 8 votes

answered by Chromo Runge https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=68326 12 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238440

I am teaching the idea of inﬁnite geometric series to high school students, looking for hints to create the diagram below using Mathematica. (I don’t need the labels). I can do it manually, but ...

asked by Tom De Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=721 7 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238501

There is a curious example in Posamentier’s book "Magniﬁcent Mistakes in Mathematics" (p. 72): \((7+3/7)*(4-3/13)= 7*4=28\), where cancelling the fractions leads to correct result. If we ...

asked by Darko G https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=60625 7 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238335

In the following the full context form of Test is not required as `"Aaa`"`

is added to
...

asked by Ronald Monson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2249 6 votes

answered by Ronald Monson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2249 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238268

...

asked by Tomi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36939 6 votes

answered by Anton Antonov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34008 4 votes

Is it possible to export the equations from Mathematica to MATLAB?

How to ask Mathematica to imitate Andy Warhol’s pop-art painting?

How to plot an ellipse?

What’s the most diﬃcult multidimensional integral that Mathematica has solved?

Even Fibonacci numbers

Find eigen energies of time-independent Schrödinger equation

Standard deck of 52 playing cards in curated data?

How to ask Mathematica to imitate Andy Warhol’s pop-art painting?

How to plot an ellipse?

What’s the most diﬃcult multidimensional integral that Mathematica has solved?

Even Fibonacci numbers

Find eigen energies of time-independent Schrödinger equation

Standard deck of 52 playing cards in curated data?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=14035

Is it possible to export the output expressions from Mathematica computations (e.g., equations) in valid MATLAB syntax?

asked by Seyhmus Güngören https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4256 43 votes

answered by rm -rf https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5 48 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=59132

I tried to ask Mathematica to imitate Andy Warhol, let it convert a Marilyn Monroe’s portrait so that it looks like Warhol’s world famous pop-art painting. However, the result shown below is far from ...

asked by Putterboy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=16069 52 votes

answered by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 67 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=20100

I’m new to Mathematica, and I’m ﬁnding it diﬃcult to plot an ellipse. I tried using

`Plot[(x/5)^2 + (y/3)^2 == 1, {x, -5, 5}, {y, -3, 3}]`

but I’m getting ...

asked by Sriram https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6075 18 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 30 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222184

asked by ben18785 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19278 6 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=37266

Today, I found the Euler Project. Problem #2 is

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the ﬁrst 10 terms will be:

asked by xyz https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9627 34 votes

answered by rcollyer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=52 46 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=32293

I’m trying to get the eigenvalues of a one dimensional time-independent Schrödinger equation,

\(-\frac {h^2}{2m_0}\frac {d^2\psi }{dx^2}+U(x)~\psi =Ei~\psi \)

where U(x) is some potential and Ei is the ...

asked by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 49 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 46 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16108

I am not sure how to ﬁnd out what all is included as curated data. For example, are the individual images of each of the 52 cards in a standard deck of playing cards included?

If not, is there a way ...

asked by JohnD https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1629 25 votes

answered by rm -rf https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5 23 votes

ListDensityPlot3D with x-axis in logscale

Trying to solve a PDE getting warnings I don’t understand

How can we improve transonic ﬂow visualization?

Trying to solve a PDE getting warnings I don’t understand

How can we improve transonic ﬂow visualization?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238481

Starting from a data set like the one used in this post: Importing and visualizing 4D data DATA It can be viewed using ListDensityPlot3D, as follows:

asked by Ivan Y. Forero https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76882 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238231

Consider the partial diﬀerential equation

asked by beginners https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76785 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238500

With this code we can make 2D FEM simulation of transonic ﬂow around airfoil NACA 0012 at Mach number of 0.925. It takes about 5 minutes on the XENIA-15 laptop of 32 GB memory with processor Intel ...

asked by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388 4 votes

1.17.1 Top new questions this week

1.17.2 Greatest hits from previous weeks

1.17.3 Can you answer these questions?

1.17.2 Greatest hits from previous weeks

1.17.3 Can you answer these questions?

Faster "Closest Pair of Points Problem" implementation?

Broken ValueQ function in Mma12.2?

Graphics not correctly produced when saving to PDF in Version 12

MoleculePlot draws sucrose benzoate with overlapping bonds

How to globally disable and re-enable Echo?

Compile - Optimization of function calls - does it matter?

neighbouring pixels : next smaller and bigger perimeter

Broken ValueQ function in Mma12.2?

Graphics not correctly produced when saving to PDF in Version 12

MoleculePlot draws sucrose benzoate with overlapping bonds

How to globally disable and re-enable Echo?

Compile - Optimization of function calls - does it matter?

neighbouring pixels : next smaller and bigger perimeter

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237884

The closest pair of points problem is a common computational geometry problem: given n points, ﬁnd a pair of points with the smallest distance between them. A naive algorithm of ﬁnding distances ...

asked by Aaron T. Becker https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76690 17 votes

answered by Carl Woll https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45431 11 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237871

f[x] ^= 1; ValueQ[g[x]]

returns True in Mathematica 12.2. Is it a bug?

asked by Roma Lee https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57495 15 votes

answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 17 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237994

12.0.0 for Microsoft Windows (64-bit) (April 6, 2019) How do I get my graphic to look the same in PDF as it does in a Notebook? This is what the graphic looks like in the FrontEnd:

This is how the ...

asked by Steven Thomas Hatton https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44139 10 votes

answered by MelaGo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63360 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237903

Recently I learned that in Mathematica it is possible to create chemical structures here: Chemical formulas with Mathematica I am having a problem with a structure called "Sucrose benzoate"

asked by John https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72940 9 votes

answered by Jason B. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9490 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238163

I have Echo’s buried in code all over my notebook, I’d like a ﬂag to turn them all on or oﬀ globally.

Sure `Unprotect[Echo];Echo=Identity`

would disable them, but ...

asked by M.R. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=403 6 votes

answered by Carl Woll https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45431 9 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238018

I was surprised to see that, in the results of CompilePrint for a function made with Compile, calls to ...

asked by Sean https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76328 6 votes

answered by Sean https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76328 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237914

I have a list of pixels centers, for example :

asked by yfs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=71775 6 votes

answered by C. E. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=731 7 votes

How to make Jacobian automatically in Mathematica

Plotting Complex Quantity Functions

QR Code in shopping cart handle

How do I plot a plane EM wave?

Standard deck of 52 playing cards in curated data?

Why I get the "Set::write: "Tag Times in is Protected." error?

Mathematica vs. Python - how does Mathematica compare to Python’s scientiﬁc computing suite?

Plotting Complex Quantity Functions

QR Code in shopping cart handle

How do I plot a plane EM wave?

Standard deck of 52 playing cards in curated data?

Why I get the "Set::write: "Tag Times in is Protected." error?

Mathematica vs. Python - how does Mathematica compare to Python’s scientiﬁc computing suite?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=5790

If we have two vectors, \(a\) and \(b\), how can I make Jacobian matrix automatically in Mathematica?

$$ a=\left( \begin{array}{c} x_1^3+2x_2^2 \\ 3x_1^4+7x_2 \end{array} \right);b=\left( \begin{array}{...

asked by George Mills https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1012 39 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 52 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3458

Trying to plot with complex quantities seems not to work properly in what I want to accomplish. I would like to know if there is a general rule/way of plotting when you have complex counterparts in ...

asked by night owl https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=116 42 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 29 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26268

This week, the market people from my work wanted to put QR codes in shopping cart handles, but when they tested it, the QR code did not work. I noted that the cylindrical curvature (even small) ...

asked by Murta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2266 196 votes

answered by halirutan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=187 192 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=1987

I would like to display an electromagnetic (EM) wave. I have written code that works, but it does not "shade" the area between the graph and the axes. Both the ...

asked by Rainforest Frog https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=202 22 votes

answered by J. M.’s ennui https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 16 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16108

If not, is there a way ...

asked by JohnD https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1629 25 votes

answered by rm -rf https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5 23 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=11868

Why I get the error below with this code:

asked by Aurelius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1669 10 votes

answered by Mark McClure https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36 13 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=86058

Python’s family of packages for scientiﬁc computing has matured rapidly. I can pretty much replicate all of Mathematica’s functionalities, but with production level and open-source code using the ...

asked by M.R. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=403 49 votes

answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 36 votes

NDSolve - interpolation or machine precision problem

Matrix regularization, how to pick \(\lambda \)

Memory consuming Expand

Matrix regularization, how to pick \(\lambda \)

Memory consuming Expand

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237920

For the following equations;

asked by confused https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74890 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237834

Since v12 FindFit[] now supports regularisation, such as Tikhonov regularization. Do there exist statistics to help guide the choice of the hyper-parameter

asked by Tomi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36939 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238106

Expand ﬂoods all my 64GB RAM in MMA 12.1 (Windows). Therefore I cannot run the code. Somebody with >64GB RAM could give the result. A memory saving alternative ...

asked by granular bastard https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69288 1 vote

1.18.1 Top new questions this week

1.18.2 Greatest hits from previous weeks:

1.18.3 Can you answer these questions?

1.18.2 Greatest hits from previous weeks:

1.18.3 Can you answer these questions?

Why MMA refuses to simplify the following simple expression?

Simplifying code that displays a square rolling inside a circle

Trying to build a code to translate handwritten formulas using ML

How to deﬁne a function reminding of names of the independent variables?

Improve running speed for DeleteDuplicates

Why does Mathematica try to take the ﬁrst element of the empty list when plotting?

Why do the frame ticks disapear when a plot is exported as PNG?

Simplifying code that displays a square rolling inside a circle

Trying to build a code to translate handwritten formulas using ML

How to deﬁne a function reminding of names of the independent variables?

Improve running speed for DeleteDuplicates

Why does Mathematica try to take the ﬁrst element of the empty list when plotting?

Why do the frame ticks disapear when a plot is exported as PNG?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237547

I have the following simple expression `Exp[(Log[1 + x]^2 - Log[x]^2)/Log[1 + 1/x]] - x^2`

that can be shown to simplify to \(x\)

asked by user16320 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=16320 13 votes

answered by yarchik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9469 5 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237692

The vertex A,B of the square ABCD with side length \(\sqrt {2}\) is on the circle with radius \(\sqrt {2}\), vertex C,D is inside the circle, roll the square ABCD along the inside of the circle ...

asked by expression https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7339 10 votes

answered by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 0 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237533

I’m lazy writing equations in Latex so I want a code to translate handwritten equations. This question is related to an old experiment I’m reviewing during vacations, here. I’m trying to use ...

asked by Gluoncito https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8696 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237458

I am using a function with a lot of variables. There are 9 and sometimes more of them. In this case, it is diﬃcult to memorize, which one stays on the, say, fourth position, and which one - on the ...

asked by Alexei Boulbitch https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=788 8 votes

answered by CA Trevillian https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63039 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237681

How to make this faster? I want to remove elements that satisfy the condition below but it’s way too slow.

asked by anhnha https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18805 8 votes

answered by WReach https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=142 10 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237785

I’m using Mathematica 12.1.1.0. When I enter

asked by Jason Gross https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12258 7 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 3 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237678

I am using M12.0.0.0 on Ubuntu and I have these two plots:

asked by valar morghulis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26937 6 votes

answered by Rolf Mertig https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29 5 votes

What do the X and Y axis stand for in the Fourier transform domain?

How can I plot the direction ﬁeld for a diﬀerential equation?

Is Mathematica worth it for me?

How to ask Mathematica to imitate Andy Warhol’s pop-art painting?

Figuring when the minute and hour hand coincide on a clock

Conversion of Sine to Cosine

Finding unit tangent, normal, and binormal vectors for a given r(t)

How can I plot the direction ﬁeld for a diﬀerential equation?

Is Mathematica worth it for me?

How to ask Mathematica to imitate Andy Warhol’s pop-art painting?

Figuring when the minute and hour hand coincide on a clock

Conversion of Sine to Cosine

Finding unit tangent, normal, and binormal vectors for a given r(t)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=85139

In Wolfram Mathematica the function Fourierhas the following declaration

`Fourier[list]`

And after a list is given to the ...

asked by user253956 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29958 27 votes

answered by Hugh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12558 61 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8841

I’d like to plot the graph of the direction ﬁeld for a diﬀerential equation, to get a feel for it. I’m a novice, right now, when it comes to plotting in Mathematica, so I’m hoping that someone can ...

asked by Matt Groﬀ https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1735 31 votes

answered by Peter Breitfeld https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=307 25 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=100072

I’m 13 years old and in 7th grade. I’m currently in Algebra 1, and I have fallen in love with both math and programming.

When I came upon Mathematica, it was awesome. My two favorite things fused ...

asked by Nico A https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35769 81 votes

answered by Pillsy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=531 55 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=59132

I tried to ask Mathematica to imitate Andy Warhol, let it convert a Marilyn Monroe’s portrait so that it looks like Warhol’s world famous pop-art painting. However, the result shown below is far from ...

asked by Putterboy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=16069 52 votes

answered by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 67 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=573

I would like to list all possible times in a 12-hour period, where the hour hand overlaps the minute hand completely. This is really a question about three distinct things - to be done in Mathematica ...

asked by Steve D https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=191 15 votes

answered by Verbeia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8 21 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=67521

I’m solving equations with many Cosines and Sines. And I want to convert all the Sines to Cosines using trigonometric formulas such as cos(x)=sin(x+pi/2). How can I do this?

asked by YongCheol Kwon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23041 4 votes

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 2 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18598

For my Calc III class, I need to ﬁnd \(T(t), N(t)\), and \(B(t)\) for \(t=1, 2\), and \(-1\), given \(r(t)=\{t,t^2,t^3\}\).

I’ve got Mathematica, but I’ve never used it before and I’m not sure how to coerce ...

asked by a98 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5605 30 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 44 votes

Numerically obtaining inverse 2D Laplace transform

How to determine population from a list of arbitrary jurisdictions (cities, states, counties, et al.)?

Computing correspondences between two images

How to determine population from a list of arbitrary jurisdictions (cities, states, counties, et al.)?

Computing correspondences between two images

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237480

I wonder if there is a function in Mathematica (or code) that can help obtaining inverse 2D
Laplace transform of a function, f(s1,s2) which is the 2D Laplace transform of a function
`F(t1,t2) in (s1,s2)`

...

asked by Refaat Galal https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76583 1 vote

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237541

I am an aspiring data scientist who’s working on a passion project, namely to assign danger-level scores to police departments in the United States. One speciﬁc metric I’m developing results from ...

asked by uselesslemma https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72297 3 votes

answered by George Varnavides https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=41179 0 votes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237484

A classic problem in computer vision is computing correspondences between keypoints in two similar images, despite modest variations in size, lightness, orientation, etc., of the images, as ...

asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 6 votes