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I'm trying out the code below and it takes quite a long time to compute and throws eincr and slwcon warnings. Is there a way to speed this up?phase[u_,...
Asked on 12/20/2020 by 123infinity
1 answerSuppose I draw a black/white image where the color black represents 1.0 and the color white represents 0. Is there a way to extract numerical estimates for the coefficients of...
Asked on 12/20/2020 by Tom Waits
1 answerHelp with creating functions. I have an assignment I need to do, and the first part is asking me to create a one argument function that has one angle between...
Asked on 12/20/2020 by Raven
0 answerI use the following functions to receive a matrix, and make it symmetric positive definite:isPD[mat_] := Module[{norm}, norm = Norm[mat]; Apply[And, Map[(# > 0) &,...
Asked on 12/20/2020
0 answerI am generating a bar chart in which each count is to be represented by a disk (or something similar). This alone seems straightforward: simply set the option ChartElements ->...
Asked on 12/19/2020 by Aaron Eiben
1 answerGiven a positive-definite or negative-definite matrix $A$ of size $r times r$, one can define the corresponding theta function $$f_{A}(q) = sum_{v in mathbb{Z}^{r}} q^{v^{t}Av} = 1...
Asked on 12/19/2020 by Benighted
0 answerI have troubles to understand how to use Manipulate and ParametricNDSolve to have modulable parameters inside my models. I checked numerous questions on this forum and couldn't find one that...
Asked on 12/19/2020 by Jerobou
1 answerThis question is a follow-up to my previous question and an attempt to implement @Tim Laska's excellent approach of setting up an anisotropic quad mesh. I'm solving a...
Asked on 12/19/2020 by Rpj
1 answerQuestionsThere are two things that I want to ask:What is the relation between computation time of the ParallelTable[] and the length of the table?This is meant to be a rough...
Asked on 12/19/2020 by Jak
0 answerBecause my network nodes have real world names more than a few characters long, I'd like to label them with a shortcut, e.g., n1, n2, n3, ..., and put a...
Asked on 12/18/2020 by oldlab
1 answerGet help from others!
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