8.23.1 Top new questions this week

8.23.1.1 DSolve in V 13.1 hangs on many ode's when using IncludeSingularSolutions->True. How to work around this?
8.23.1.2 Is a list of all graph layouts available?
8.23.1.3 VectorColorFunction not working at a few points
8.23.1.4 How can I rotate and reflect a molecule plot?
8.23.1.5 A strategy to create good initial guess for Lorentzian model fit
8.23.1.6 Weird PDF (also EPS and SVG) exported graphics
8.23.1.7 Optimal parallelization on Apple Silicon
8.23.1.1 DSolve in V 13.1 hangs on many ode's when using IncludeSingularSolutions->True. How to work around this?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270586

V 13.1 introduced the option IncludeSingularSolutions 
When trying it, so far I have found over 250 ode's which hangs when using this option. First and second order. At the bottom I've put a link to ... 
[differential-equations] [version-13.1]
 
asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 16
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 8
8.23.1.2 Is a list of all graph layouts available?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270688

Is a list of all graph layouts available? 
For example I want to check all the layouts at once for a specific graph so I'll map this over the list.  Of course you can just type the list yourself but ... 
[graphs-and-networks] [options]
 
asked by emnha https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18805 Score of 13
answered by yode https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=21532 Score of 13
8.23.1.3 VectorColorFunction not working at a few points

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270511

I use the following data to  ListVectorPlot  a vector field with the color indicating the vector direction. However, there seem to be some vectors not colored ... 
[plotting] [graphics] [color] [vector]
 
asked by xiaohuamao https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=11125 Score of 10
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 7
8.23.1.4 How can I rotate and reflect a molecule plot?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270627

Consider: 
 MoleculePlot[Molecule[Entity["Chemical", "Theobromine"]]] 
 
 
How can I rotate and reflect it? This is my current method: 
... 
[graphics] [chemistry]
 
asked by yode https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=21532 Score of 9
answered by rhermans https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10397 Score of 9
8.23.1.5 A strategy to create good initial guess for Lorentzian model fit

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270704

I was preparing an answer for a question that got deleted, so I will post this anyhow. 
Given a set of data with a hump 
... 
[fitting] [data] [machine-learning]
 
asked by rhermans https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10397 Score of 8
answered by rhermans https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10397 Score of 10
8.23.1.6 Weird PDF (also EPS and SVG) exported graphics

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270580

I'm producing a graphic (sorry for not posting the code but it's quite disordered (see edit below)) and would like to export it as a vector image. For some reason the PDF (below left) does not look ... 
[plotting] [graphics] [bugs] [export] [pdf-format]
 
asked by Daniel Castro https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69211 Score of 7
answered by Alexey Popkov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=280 Score of 4
8.23.1.7 Optimal parallelization on Apple Silicon

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270758

I have the 2021 13 inch Macbook Pro with the M1 Pro chip (with $ProcessorCount equal to 10), currently running Mathematica 13.0.0. I have had a good experience with serial computations on this chip, ... 
[parallelization] [hardware] [resource-management] [apple-silicon]
 
asked by Void https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46818 Score of 6
answered by Henrik Schumacher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=38178 Score of 3