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Mathematica : Recent Questions and Answers (Page 155)

Find answers to your questions about Mathematica or help others by answering their Mathematica questions.

How to store outputs as coordinates and use ListPlot to plot them?

so I have a program that outputs a desired value for incrementing values of alpha. Right now, my program prints a list of these for 40 values of alpha in...

Asked on 03/01/2021 by NotSoTrivial

1 answer

Drawing evenly spaced arrows and opaque sheet between curves?

I have a question about drawing arrows/sheets between curves. Suppose I have two 3-d parametric curves like shown below:ParametricPlot3D[{{Cos[t], Sin[t], t}, {Cos[t + .3], Sin[t + .3], t}}, {t,...

Asked on 03/01/2021 by Ztan

2 answer

Varied PlotRange for plots combined using Show

I would like to create a so called Stacked Plot type of view to display a combination of data. Perhaps there already is a built in function in Mathematica, but...

Asked on 02/28/2021 by Bulat

3 answer

Updated notebook on Mathematica online, but Chrome still shows old version

There's a strange behavior of Mathematica online cloud where I can update the online version, but Chrome will still show old version of the notebook. However, opening it in another...

Asked on 02/28/2021

0 answer

How can I set a certain predicate for the result of a function to true?

I have an object called f (basically a vector of functions) and a predicate called MemberQR(actually its with subscript R). MemberQR[f]:=True I.e. I set the predicate to true. Now I...

Asked on 02/28/2021 by NG98

2 answer

Help with a custom coordinate transformation

I'm just starting to use Mathematica and can't wrap my head around the task I have at hand. It comes from field-theory. (Sorry I had to insert formulas as images...

Asked on 02/28/2021 by xaxa

0 answer

How to get Callout and Text[...,Offset[...]] to use the same coordinate system in Mathematica 12?

I could have sworn this worked in a previous version of Mathematica, but when I transcribe the coordinates used to label text offsets, I get errors like Callout::copos: {{{0.193964,-2.26836+3.14159 I},{0,0.5}}}...

Asked on 02/28/2021

0 answer

Resource management in Mathematica

I am using a library that has functions like createSomeObject[] and deleteSomeObject[obj]. It is an interface to a C language library and it reflects how the C library is...

Asked on 02/28/2021

5 answer

Interactively extracting arbitrary portion of elements from a 2D list

I have a 2D list which can be plotted as follows: Image 1 Based on the plotted image, I would like...

Asked on 02/28/2021 by wkong

1 answer

Pattern Matching BlankSequence

Consider the definition:Clear[fun]fun[a_ + b_] := fun[a] + fun[b];fun[a+b+c](*fun[a] + fun[b] + fun[c]*)This works as expected. However, if we use a BlankSequence on "b":Clear[fun]fun[a_ + b__] := fun[a]...

Asked on 02/27/2021

1 answer

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