10.15.2 Greatest hits from previous weeks

10.15.2.1 Plotting a Phase Portrait
10.15.2.2 Mathematica vs. Python - how does Mathematica compare to Python's scientific computing suite?
10.15.2.3 How to create a new "person curve"?
10.15.2.4 Digits of Pi in colored spiral
10.15.2.5 Placing text within a plot
10.15.2.6 How to make an inkblot?
10.15.2.7 Why round to even integers?
10.15.2.1 Plotting a Phase Portrait

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=14160

I'm trying to plot a phase portrait for the differential equation 
$$x'' - (1 - x^2) x' + x = 0.5 \cos(1.1 t)\,.$$ 
The primes are derivatives with respect to $t$. I've reduced this second order ODE to ... 
[plotting] [differential-equations]
 
asked by covertbob https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4528 Score of 47
answered by David Slater https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1746 Score of 42
10.15.2.2 Mathematica vs. Python - how does Mathematica compare to Python's scientific computing suite?

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 ... 
[python] [system-performance]
 
asked by M.R. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=403 Score of 64
answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 Score of 42
10.15.2.3 How to create a new "person curve"?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=17704

Wolfram|Alpha has a whole collectionź of parametric curves that create images of famous people. To see them, enter  WolframAlpha["person curve"]  into a Mathematica ... 
[graphics] [image-processing] [algorithm] [wolfram-alpha-queries] [generative-art]
 
asked by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 Score of 93
answered by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 Score of 50
10.15.2.4 Digits of Pi in colored spiral

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293384

In How to make the digits of  go around in a spiral like this? 
it is described how to plot pi in a spiralform (in my case as binary number): 
... 
[calculus-and-analysis] [graphics] [color] [number-theory] [digit-sequences]
 
asked by ralf_7 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=95575 Score of 9
answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 Score of 6
10.15.2.5 Placing text within a plot

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=71776

I want to place text within a plot. The text is always centered relative to the coordinates. How can I left-align or right-align the text relative to the coordinates? For example: 
 
... 
[plotting] [graphics] [text]
 
asked by Anthony Mannucci https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=24733 Score of 29
10.15.2.6 How to make an inkblot?

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): 
 
... 
[graphics] [performance-tuning] [image-processing] [generative-art]
 
asked by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 Score of 91
answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 Score of 55
10.15.2.7 Why round to even integers?

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 
... 
[numerics] [language-design]
 
asked by wxffles https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=427 Score of 88
answered by Per Alexandersson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=488 Score of 54