4.31.1 Top new questions this week

4.31.1.1 How to remove a paclet downloaded from Wolfram Research Server?

https://mathematica.stackexchange.com/questions/153752/how-to-remove-a-paclet-downloaded-from-wolfram-research-server

 
How can I remove a paclet that was automatically downloaded when I used a function for the first time (i.e. NetChain)? 
 
I believe the download was faulty, preventing me from using any of the  ...
 

- asked by mpourrah (8 votes), answered by Itai Seggev (10 votes)

4.31.1.2 Best way to expand vocabulary of Mathematica functions?

https://mathematica.stackexchange.com/questions/153469/best-way-to-expand-vocabulary-of-mathematica-functions

 
I'm enjoying slowly learning Mathematica but noticing one skill I'm lacking is a comprehensive vocabulary of Mathematica functions. I was wondering if members would mind sharing some strategies they  ...
 

- asked by BBirdsell (8 votes), answered by Nasser (9 votes)

4.31.1.3 high pass filter without losing detail

https://mathematica.stackexchange.com/questions/153414/high-pass-filter-without-losing-detail

 
I have troubles doing a simple high pass filtering... 
 
Downloading the test datahttps://pastebin.com/74J8t2YV as "test.dat", you can see that overimposed on the signal there are some low frequencies  ...
 

- asked by alessandro (8 votes), answered by xzczd (7 votes)

4.31.1.4 Accesing keys based on position in an association

https://mathematica.stackexchange.com/questions/153689/accesing-keys-based-on-position-in-an-association

 
I would like to have the following simple function "GetKey[]" on a very large association. 
 
(* The actual Association is very large, this is just small example *) 
assoc = <|{1,1} -> 2, {1,2}  ...
 

- asked by Iconoclast (7 votes), answered by Carl Woll (9 votes)

4.31.1.5 How to calculate CellularAutomaton rule numbers in higher dimensions?

https://mathematica.stackexchange.com/questions/153388/how-to-calculate-cellularautomaton-rule-numbers-in-higher-dimensions

 
Where can I find documentation of the rule number convention for CellularAutomaton for higher than 1 dimension? 
 
I understand the convention for elementary 1D automata, but I don't understand even  ...
 

- asked by Mark S. (7 votes), answered by Vitaliy Kaurov (6 votes)

4.31.1.6 Clicking on any Line of Code causes Plotted Points to Vanish

https://mathematica.stackexchange.com/questions/153368/clicking-on-any-line-of-code-causes-plotted-points-to-vanish

 
Bug detected in 11.1, apparently related but not identical to bug in 10.4.  Reported to Worfram, Inc as CASE:3926732 
 
$Version 
(* "11.1.1 for Microsoft Windows (64-bit) (April 18, 2017)" *) 
 
p1 =  ...
 

- asked by bbgodfrey (7 votes), answered by John Joseph M. Carrasco (3 votes)

4.31.1.7 Puzzled about the behavior of NDSolve (ODE's involving Integrals)

https://mathematica.stackexchange.com/questions/153624/puzzled-about-the-behavior-of-ndsolve-odes-involving-integrals

 
Any idea why NDSolve can easily handle the first of these examples, but not the 2nd? I have a system of ODE's involving integrals without closed-form solutions, and keep getting the 2nd error message.  ...
 

- asked by Andrea Wilson (6 votes), answered by Michael E2 (5 votes)