1.14 Thursday, February 4, 2021

1.14.1 Top new questions this week

Confirm vs Throw

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239250

Version 12.2 brought us Confirm and Enclose. What’s the point? Is it just that it’s a slightly more convenient syntax than ...

asked by Patrick Stevens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=30771 13 votes

How to use wolframscript to develop flexible command-line tools?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239072

I am currently changing a notebook into a wolframscript for a "production" environment, where I plan to pack the script as a standard CLI tool. However I do not know how to implement such an ...

asked by Gravifer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72025 10 votes

Automatic Method for FindMinimum with constraints

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238999

What is the default method used by FindMinimum with constraints? The documentation says:

"Currently, the only method available for constrained optimization is ...

asked by VarunM https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69094 9 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 8 votes

How to refine a boundary mesh with MeshRefinementFunction?w

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239220

MeshRefinementFunction works well to refine elements in a defined spatial domain (here \(x>0\)):

asked by Oscillon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13605 8 votes

answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 8 votes

Ugly streaks caused by Arg in a contour plot

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239255

I had a more general question about a similar problem more than two years ago, Getting rid of discontinuities in plots caused by square roots, logarithms, ‘Arg‘, etc, which got lots of interesting ...

asked by https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35000 8 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 11 votes

Trying to Rotate the North Pole View of a Globe

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239294

My goal is to generate diagrams like this.

But I would like to be able to rotate the globe about the North Pole, so that I can represent different times of the day. When I use ImageRotate, the ...

asked by David Elm https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44449 7 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 11 votes

problem with DelaunayMesh 3D coordinates

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239303

I found DelaunayMesh works fine for 2D. For example,

asked by matheorem https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4742 7 votes

answered by user21 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18437 7 votes

1.14.2 Greatest hits from previous weeks

Conversion of Sine to Cosine

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=67521

I’m solving equations with many Cosines and Sines. And I want to convert all the Sines to Cosines using trigonometric formulas such as cos(x)=sin(x+pi/2). How can I do this?

asked by YongCheol Kwon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23041 4 votes

answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 2 votes

Extract real part of a complex expression better than Re does

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3306

I have a complex expression with real positive variables only.

Mathematica Input Style:

asked by max https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=796 34 votes

answered by nixeagle https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=814 53 votes

Assign the results from a Solve to variable(s)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=6669

I understand Mathematica can’t assign the results of a Solve to the unknowns because there may be more than 1 solution. How can I assign the 4 values of following result to variables?

asked by stevenvh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1450 56 votes

answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 34 votes

Why round to even integers?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2116

According to the Mathematica help: Round rounds numbers of the form x.5 toward the nearest even integer. For example:

Round[{0.5, 1.5, 2.5, 3.5, 4.5}]

gives

asked by wxffles https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=427 83 votes

answered by Per Alexandersson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=488 51 votes

Using Export[] sends the file where?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8586

I am trying to use the Export command to convert a list of plots into a *.gif file, and the command runs and executes well, but I can’t find the file! Where is it ...

asked by Patrick Da Silva https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1785 37 votes

answered by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 51 votes

Formatting legend text font

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3433

I am using this code to plot a graph, and I am trying to make the font of the legend bigger.

asked by Julia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=525 20 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 25 votes

What do the X and Y axis stand for in the Fourier transform domain?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=85139

In Wolfram Mathematica the function Fourier has the following declaration

Fourier[list]

And after a list is given to the ...

asked by user253956 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29958 27 votes

answered by Hugh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12558 61 votes

1.14.3 Can you answer these questions?

RegionPlot of the Maximum of a function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239047

For the function fun[a_, b_, x_, y_] = Sin[a x] Cos[b y] (a x + b y); corresponding to \(x\) and \(y\), I need a RegionPlot showing the maximum of function \(fun[a, b, x]\)

asked by Mike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76947 1 vote

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 0 votes

How to let Mathematica evaluate a large amount of data

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239107

I have the following code in mathematica which runs perfectly for a small matrix of 21 x 12 matrix. But I really want to test it for a large system. My data is 35844 x 21000 elements, totaling 1.5 GB. ...

asked by shixx597_Min https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=59772 1 vote

Directed Infinity vs Indeterminant in this output

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=239335

When I evaluate

asked by user824530 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75136 1 vote