3.6.1 Top new questions this week

3.6.1.1 How to extract the list of all matrices from a Block Diagonal Matrix?

http://mathematica.stackexchange.com/questions/120433/how-to-extract-the-list-of-all-matrices-from-a-block-diagonal-matrix

 
I am working on a function to do the opposite operation of How to form a block-diagonal Matrix from a list of matrices? 
 
Here is my current algorithm: For i starting at 1, scan the elements of index  ...
 

- asked by happy fish (11 votes), answered by yode (6 votes)

3.6.1.2 Collect all inputs from Documentation Center

http://mathematica.stackexchange.com/questions/120334/collect-all-inputs-from-documentation-center

 
Is it possible to collect all inputs programmatically from every function in the Documentation Center in a list and wrap them in a HoldComplete? 
 
My case: With some fundamental functions modified, I  ...
 

- asked by happy fish (9 votes), answered by Edmund (12 votes)

3.6.1.3 How to avoid procedural loops in this example?

http://mathematica.stackexchange.com/questions/120533/how-to-avoid-procedural-loops-in-this-example

 
I want to iterate over a list, and return the index as long as I found the first element satisfying my condition. Written in a for loop: 
 
f[x_]:=2x 
 
For[i=1, i<=10, i++, 
If[f[i]==10, Return[i]] 
] 
...
 

- asked by Nick (8 votes), answered by Gerli (5 votes)

3.6.1.4 Why does this LibraryLink function crash?

http://mathematica.stackexchange.com/questions/120384/why-does-this-librarylink-function-crash

 
Recently, I have rewritten pure Wolfram Language implementation CAGDBSplineSurface[] with C. Below is main LibraryLink code: 
 
LibraryLink Code 
 
#include "WolframLibrary.h" 
 
...
 

- asked by Shutao TANG (8 votes), answered by happy fish (11 votes)

3.6.1.5 How can I combine a list of Line[]'s into one continuous Line?

http://mathematica.stackexchange.com/questions/120285/how-can-i-combine-a-list-of-lines-into-one-continuous-line

 
I have a huge list of Lines. Take this one as an example: 
 
linelist1 = {Line[{{0.15042300130733277`, 
0.09918669845167598`}, {0.15124668865085406`, 
0.09522452324491057`}}], 
...
 

- asked by YungHummmma (8 votes), answered by Michael E2 (12 votes)

3.6.1.6 NIntegrate appears to give incorrect results

http://mathematica.stackexchange.com/questions/120118/nintegrate-appears-to-give-incorrect-results

 
I am trying to specify a bivariate probability density function in Mathematica. As a check, I would like to confirm that it integrates to one. Here is the function: 
 
f[x1_, x2_, u1_, u2_, v11_, v22_,  ...
 

- asked by Miguel (8 votes), answered by Anton Antonov (11 votes)

3.6.1.7 Which fonts are supported in Wolfram Cloud?

http://mathematica.stackexchange.com/questions/120102/which-fonts-are-supported-in-wolfram-cloud

 
I recently suggested creating dynamic community ads with Wolfram Cloud.  @C.E. made a proof of concept ad to show that it works well. 
 
Fonts are an important part of graphics design.  It is useful to  ...
 

- asked by Szabolcs (8 votes), answered by Szabolcs (5 votes)