10.13.1 Top new questions this week

10.13.1.1 Bridget Riley - Movement in Squares and Circles
10.13.1.2 Select elements from a list based on alphabetical order criteria
10.13.1.3 How to select right triangles and non right triangles given their coordinates
10.13.1.4 How to obtain the boundary of a two-dimensional ParametricRegion surface in order to apply Stokes' theorem to compute surface integrals?
10.13.1.5 How do I extract the domain values associated with a ColorDataFunction?
10.13.1.6 What's the reverse operation of TransferFunctionExpand?
10.13.1.7 Adjusting ontour plot settings for proper visualization of positive and negative values with custom levels
10.13.1.1 Bridget Riley - Movement in Squares and Circles

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=302187

Bridget Riley 
Bridget Riley (born 1931 in London) is an English painter known for her op art paintings. Alongside Victor Vasarely and Vera Molnár, she is one of the best-known representatives of this ... 
[plotting] [graphics] [computational-geometry] [visualization] [generative-art]
 
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 16
answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 Score of 16
10.13.1.2 Select elements from a list based on alphabetical order criteria

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=302344

I have this code to generate the anagrams for a 6 letters word: 
... 
[list-manipulation] [string-manipulation] [filtering]
 
asked by Rodrigo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=43431 Score of 5
answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 Score of 5
10.13.1.3 How to select right triangles and non right triangles given their coordinates

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=302149

I have a list of triangle coordinates in 2D-space: 
... 
[list-manipulation] [geometry]
                                                                                  

                                                                                  
 
asked by Thuy Nguyen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69240 Score of 5
answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 Score of 4
10.13.1.4 How to obtain the boundary of a two-dimensional ParametricRegion surface in order to apply Stokes' theorem to compute surface integrals?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=302121

On the help page of the  SurfaceIntegrate , an example of Stokes' theorem is listed: 
Compute the  Curl  ... 
[calculus-and-analysis]
 
asked by lotus2019 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69835 Score of 4
10.13.1.5 How do I extract the domain values associated with a ColorDataFunction?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=302233

I want to extract the Domain values of 380 and 750 from the following ColorDataFunction: 
 
I'm missing something on the language-levelthey don't seem to be Attributes, neither do they seem to be ... 
[functions] [attributes] [properties]
 
asked by Andrew Cheong https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6944 Score of 4
answered by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 3
10.13.1.6 What's the reverse operation of TransferFunctionExpand?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=302236

Given a transfer funtion 
 TransferFunctionModel[1/(s + I) + 1/(s - I) + 1/(s + 1) + 1/(s - 2)^2,s] 
 
we can obtain the polinomial form by using TransferFunctionExpand 
... 
[simplifying-expressions] [algebraic-manipulation] [control-systems]
 
asked by metroidman https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=94488 Score of 4
answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 Score of 6
10.13.1.7 Adjusting ontour plot settings for proper visualization of positive and negative values with custom levels

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=302159

I am seeking assistance in creating a contour plot that displays both positive and negative contour values. I want the contour lines with positive values to be colored red, and those with negative ... 
[plotting]
 
asked by user98502 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=98502 Score of 4
answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 Score of 4