9.17.2 Greatest hits from previous weeks

9.17.2.1 How to make the digits of  go around in a spiral like this?

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 
 
[graphics] [formatting] [generative-art]
 

asked by matrix42 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5379 Score of 58

answered by Martin Ender https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2305 Score of 74

9.17.2.2 How to build a bvh (a motion capture file format) player in Mathematica?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=60292

How to build a bvh player that can be used to visualize human motions in Mathematica? Any 
idea or sample code would be appreciated. 
... 
[graphics3d] [import] [animation] [visualization] [code-request]
 

asked by Putterboy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=16069 Score of 50

9.17.2.3 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 90

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 Score of 54

9.17.2.4 How can I plot a graph of an integral?

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

I want to plot the following function: 
 
$$\int \left(\frac{\Gamma (x+1)}{2}-\frac{\Gamma (x-1)}{2}\right) \, dx$$ 
[plotting]
 

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

answered by k_v https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=24727 Score of 10

9.17.2.5 Finding Limits in several variables

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)=\lim_{(x,0)\... 
[functions] [calculus-and-analysis]
 

asked by Dominic Michaelis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5899 Score of 33

answered by whuber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=91 Score of 42

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

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 ... 
[programming] [open-source]
 

asked by sblom https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=178 Score of 129

answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 Score of 92

9.17.2.7 How to manipulate 2D plots?

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 ... 
[plotting] [graphics] [dynamic] [gui-construction]
 

asked by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 Score of 145

answered by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 Score of 163