Unanswered Questions

12,617 questions with no upvoted or accepted answers
52 votes
0 answers
1k views

Hyperlinks not preserved when saving in PDF format in MMA V10

Bug introduced in 10.0 or earlier and fixed in 11.0.0 I usually create my course contracts in Mathematica and then save them in PDF format. The notebooks include hyperlinks and these have ...
47 votes
0 answers
2k views

Fast Spherical Harmonics radiative transfer

This is a rather specific question and I apologize for spamming you with some lengthy code. But it could be interesting for some reader and maybe you can help out, so please bear with me. I am using ...
42 votes
0 answers
796 views

Front end goes wild with named slots

Bug introduced in 10 and fixed in 12.1 Assume the following simple expression {#"Test"}& Now go in front of the #...
40 votes
0 answers
1k views

Performance problems in new Sequence functions

The new-in-10.1 Sequence* family of functions should provide newly optimized methods for handling sequence problems. Happily in some cases they do! For example ...
37 votes
0 answers
996 views

Changing FrontEnd automatic scrolling in version 8

In Mathematica versions < 8, the FrontEnd has a very intelligent behavior: On evaluation, it by default automatically scrolls down the Notebook window to the last printed Output cell but also ...
34 votes
1 answer
718 views

Benchmarking: unexplained switching between high and low performance

tl;dr I am trying to accurately benchmark some vectorized operations, and compare them between systems. But benchmarking is hard to do well, and I am getting inconsistent results: performance is ...
33 votes
0 answers
732 views

How to design CloudObjects with reasonable CloudCredit costs

Note: I originally thought to post this as a non-answer/extended comment to this question; however I feared that I would end up hijacking the original question. It is likely a duplicate with the ...
27 votes
0 answers
2k views

Nonlinear least squares on a GPU with Mathematica 9

Update: A Mathematica wrapper for (https://github.com/zitmen/cuLM) should allow for us to directly implement the Levenberg-Marquardt algorithm in CUDA for nonlinear least squares fitting. In a ...
26 votes
0 answers
1k views

ListContourPlot and ListContourPlot3D use better interpolation for arrays of values than for lists of tuples (i.e. {{x,y,z,f[x,y,z]}..}

From reading the documentation, it seems that ListContourPlot3D should work equally well on an array versus a list of tuples, ?ListContourPlot3D ...
26 votes
0 answers
519 views

Compile not correctly initializing a variable defined inside Module

Bug introduced in 8.0, fixed in 10.4, intentionally reintroduced in 11.0 and persisting through 13.0.0 or later In the following example, inside the minimumX's <...
26 votes
0 answers
1k views

Kinect on Mathematica

I saw on the internet a lot of nice experiments with Microsoft Kinect. I just bought one and would like to know if someone here has been able to use it with Mathematica. The main idea is to been able ...
25 votes
0 answers
555 views

LibraryLink: What can we do with MInputStream and MOutputStream?

Version 9 introduced the WolframStreamsLibrary.h header for LibraryLink. It contains MInputStream and ...
25 votes
0 answers
1k views

How would I improve this Karaoke machine code?

I was looking at a large collection of Import/Export user suggestions the other day and it dawned on me that we finally have MIDI import in Mathematica 9, which is rather interesting since MIDI ...
24 votes
0 answers
1k views

Mathematica vs. state-of-the-art SAT solvers

I found some fascinating paper by Marijn Heule and Oliver Kullmann on advances in SAT solvers and automated reasoning. In particular, the authors where able to show (a year earlier) a breakthrough ...
23 votes
0 answers
389 views

Breaking change of Total in Mathematica 12.0?

Total has been changed in Mathematica 12.0. The documentation seems to contradict itself. In one line it states: Total[ $f[ e_1,e_2,...]$ ] gives the sum of the $e_i$ for any head $f$ In the next ...

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