Stream reading 1000 times faster in Python
Poincaré section of the particle motion near the black hole horizon
How to condition all cells of a notebook to a specific SeedRandom?
Counting non-zero multiplications in large sparse matrix multiplications
Manipulating rules
How do I plot the desired phase space diagram with an iron cables-like structure?
Colouring the "leaves" (self-intersections) of space curves
Stream reading 1000 times faster in Python https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296645
I have a 26GB CSV. I want to extract all the rows that have data for a specific sensor. In Mathematica I write: ... [streams]
asked by Eric William Smith https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27694 Score
of 14 answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172
Score of 18 Poincaré section of the particle motion near the black hole horizon
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296772
I am trying to recreate the Poincaré sections given in Figure 2 of this paper. For this purpose, I use the following two methods: Method1: Using ResourceFunction["ClickPoincarePlot2D"] <... [differential-equations] [equation-solving] [calculus-and-analysis] [physics] [sow-reap]
asked by codebpr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=78049 Score
of 7 answered by I.M. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26815
Score of 6 How to condition all cells of a notebook to a specific SeedRandom?
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296831
Is there a way to fix SeedRandom[.] for an entire notebook? If I carry out many calculations using random numbers, I need to give a separate code ... [evaluation] [random] [code-request] [cells]
asked by Tugrul Temel https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=60365 Score
of 7 answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172
Score of 9 Counting non-zero multiplications in large sparse matrix multiplications
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296653
Suppose I have several large, fixed, sparse matrices of real-valued entries. To make things simple, assume each is $n \times n$. I will multiply them, e.g., matA.matB.matC. Of course I can reduce ... [matrix] [sparse-arrays]
asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735
Score of 7 answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125
Score of 4 Manipulating rules https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296908
I tried searching in the docs in "Transformation Rules and Definitions", however there wasn't anything of help. So imagine I have these two rules: ... [replacement] [expression-manipulation] [rule]
asked by Confuse-ray30 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=96205
Score of 6 answered by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254
Score of 10 How do I plot the desired phase space diagram with an iron cables-like structure?
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296836
I want to plot the phase space diagram of the Lorenz attractor shown below on the top figure; however, I can only plot the bottom figure in Mathematica. ... [plotting] [graphics] [graphics3d]
asked by user444 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84456 Score
of 6 answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111
Score of 10 Colouring the "leaves" (self-intersections) of space curves https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296780
I recently asked how to colour the "leaves" (self-intersections) of parametric curves and got two great answers from cvgmt and ... [plotting] [graphics3d] [regions]
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score
of 6 answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125
Score of 6