4.19 Tuesday, August 15, 2017

================================== 
Top new questions this week: 
==================================

[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)

—————————-

[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)

—————————-

[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 data https://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)

—————————-

[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)

—————————-

[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)

—————————-

[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)

—————————-

[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)

================================== Greatest hits from previous weeks: ==================================

[Labeling individual curves in Mathematica] https://mathematica.stackexchange.com/questions/4444/labeling-individual-curves-in-mathematica

I need to create a plot for export and inclusion in a report. Is there a better way to label curves than PlotLegends? From what I’ve read and my personal experience, PlotLegends is pretty bad.

Is ...

- asked by Tianxiang Xiong (52 votes), answered by Artes (40 votes)

—————————-

[Is there an open source implementation of Mathematica-the-language?] https://mathematica.stackexchange.com/questions/4454/is-there-an-open-source-implementation-of-mathematica-the-language

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 ...

- asked by sblom (88 votes), answered by Simon (68 votes)

================================== Can you answer these? ==================================

[Analysis of the periodic data by the maximum entropy method] https://mathematica.stackexchange.com/questions/153487/analysis-of-the-periodic-data-by-the-maximum-entropy-method

I am trying to get the frequency spectrum of a periodic data. Since the data set is short, the outcome of the frequency peaks are not sharp enough, which prevents me for further analysis. I know the ...

- asked by Phyman (1 vote)

—————————-

[Plotting InterpolationFunction over Quantities] https://mathematica.stackexchange.com/questions/153458/plotting-interpolationfunction-over-quantities

What’s the proper syntax to plot Interpolation functions defined over Quantities?

points = {{0, 0}, {1, 1}, {2, 3}, {3, 4}, {4, 3}, {5, 0}}; 
 
 
Change domain to Quantities: 
 
points2 = points //  ...

- asked by alancalvitti (2 votes)

—————————-

[Fastest form of a function] https://mathematica.stackexchange.com/questions/153602/fastest-form-of-a-function

I’m trying to find the fastest form for a function. I have a few approaches with test results.The function I’m working with is the 3rd derivative of the incomplete beta function with respect to its ...

- asked by FalafelPita (1 vote)