4.23.1 Top new questions this week

4.23.1.1 Same region, different meshes

https://mathematica.stackexchange.com/questions/148210/same-region-different-meshes

 
I'm playing around with ToElementMesh and I noticed the following behaviour that puzzles me. Consider the two regions 
 
<< NDSolve`FEM` 
 
1 = 
Polygon[{{-1/2, -1}, {-1/2, 1}, {1/2, 1}, {1/2,  ...
 

- asked by Massimo Ortolano (11 votes), answered by user21 (9 votes)

4.23.1.2 Rearrange the list in a specific way

https://mathematica.stackexchange.com/questions/147876/rearrange-the-list-in-a-specific-way

 
Suppose I have a list like {"e", "c", "a", "d", "b"} and list of rules {1 -> 5, 2 -> 3, 3 -> 1, 4 -> 4, 5 -> 2}. The second list says that for example element on position 1 shoud be on  ...
 

- asked by David Baghdasaryan (11 votes), answered by Shadowray (16 votes)

4.23.1.3 Self contained APIFunction. Collecting definitions

https://mathematica.stackexchange.com/questions/148207/self-contained-apifunction-collecting-definitions

 
Cross posted on community.wolfram.com 
 
Background 
 
After failed attempt (1) to create a complex API, by nicely linking my APIFunction to a cloud based package, I decided to go with the flow and trust  ...
 

- asked by Kuba (10 votes), answered by Leonid Shifrin (4 votes)

4.23.1.4 Substitute some 1s with 0s in random list

https://mathematica.stackexchange.com/questions/148134/substitute-some-1s-with-0s-in-random-list

 
How is it better to substitute list of random combination of 1 and 0 (binary image) so that only first (or central) instance of 1 left in each group. 
 
list = {0,1,1,0,0,1,0,1,1,1,0} should be  ...
 

- asked by io_tuta (9 votes), answered by Carl Woll (10 votes)

4.23.1.5 Pattern matching Association in rules

https://mathematica.stackexchange.com/questions/148074/pattern-matching-association-in-rules

 
I would appreciate an explanation of how Associations behave in pattern matching, especially when matching rules, and using HoldPattern. 
 
Consider the following: 
 
assocRuleList = {<||> :>  ...
 

- asked by ZeitPolizei (9 votes), answered by WReach (7 votes)

4.23.1.6 How to combine Neural Network and Audio like Classify?

https://mathematica.stackexchange.com/questions/148158/how-to-combine-neural-network-and-audio-like-classify

 
I want to combine Audio object and Neural Network ,first thing I remember is Classify 
 
windInstrument = ExampleData[{"Sound", #}] & /@ {"AltoFlute", "AltoSaxophone", "BassClarinet", "BassFlute",  ...
 

- asked by partida 8votes

4.23.1.7 ROT13 and upside-down text (flip text)

https://mathematica.stackexchange.com/questions/147829/rot13-and-upside-down-text-flip-text

 
How can we transform text in order to achieve ROT13 and flip text using Wolfram Mathematica? 
 
1. ROT13 
 
 
 
2. Flip text
                                                                                  

                                                                                  
 

- asked by rhermans (8 votes), answered by rhermans (11 votes)