All Questions

43
votes
0answers
690 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 ...
39
votes
0answers
2k views

Mma 10: Half the parallel power (Macs)?

Here is a comparison of the parallel kernels launched under Mathematica under v9 and v10, on the same identical current 2014 R2-D2 Mac Pro ... [ Update: Valerio has commented that the same issue ...
38
votes
0answers
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 ...
33
votes
0answers
860 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 ...
31
votes
0answers
570 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 ...
30
votes
0answers
460 views

Front end goes wild with named slots

Bug introduced in 10 and persisting through 11.3.0 Assume the following simple expression {#"Test"}& Now go in front of the ...
30
votes
0answers
783 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 ...
29
votes
0answers
699 views

How to find a street pattern that fits a specific edge on a map

Cross post here I have such funny pictures: Very interesting,and you can get all of it by this code: ...
26
votes
0answers
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
0answers
658 views

CPU timing for matrix rank calculation difference between 10.3 and 10.4 and 11.0

I run a small rank CPU test when new Mathematica version comes out. I noticed when version 10.1 came out that Mathematica rank calculation suddenly became extremely fast on a matrix when the size ...
24
votes
0answers
956 views

Handwriting recognition with Mathematica

I am trying to teach Mathematica to read my handwriting. Since I don't want to ruin my reputation by showing my own handwriting, I am going to use a font called blackjack. Lets say this is a ...
24
votes
0answers
445 views

LibraryLink: What can we do with MInputStream and MOutputStream?

Version 9 introduced the WolframStreamsLibrary.h header for LibraryLink. It contains MInputStream and ...
24
votes
0answers
1k 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 ...
24
votes
0answers
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 ...
23
votes
0answers
474 views

Is MathieuC for moderately large imaginary arguments broken?

Bug introduced in 5.2 or earlier and persisting through 11.0 (reported as CASE:3208982) I'm trying to plot MathieuC[-3,0.3,I x] for $x\in[0,10]$, and here's what I ...
22
votes
0answers
288 views

Bug in RegionMember?

Bug introduced in 10.0 and persisting through 11.3 or later RegionMember is new in 10.0 RegionMember (new in V10) appears to ...
22
votes
0answers
655 views

Getting EPS imports to respect the original fill rule

One major problem in my attempt to answer to the CountryData flags question is that the way Mathematica handles filled curves differs from the way SVG and EPS style editors do. The latter two have the ...
22
votes
0answers
789 views

How can I trace a functional expression's evaluation visually?

Ok, so the goal is to visualize the execution of this expression foo /@ {3 + 1, bar /@ {1 + 2, {4 + 7}}} in the following fashion using nested rectangles with ...
21
votes
0answers
227 views

What has changed in pattern matching functions with the Orderless attribute?

Bug introduced in 10.1 and persisting through 11.0 In making an attempt to answer this question, we ran into a version-dependent pattern-matching issue. An extended discussion in the comments ...
21
votes
0answers
349 views

Compile not correctly initializing a variable defined inside Module

Bug introduced in 8.0 and persisting through 11.0.1 or later In the following example, inside the minimumX's Module, ...
20
votes
0answers
178 views

Inconsistent handling of Dynamic option values; intended, omission, or bug?

In answering Dynamic ClipPlanes calculated from current ViewPoint Kuba and I got into a brief exchange regarding how Option values wrapped in Dynamic should be ...
20
votes
0answers
630 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 ...
20
votes
0answers
694 views

LinearSolve and Krylov Method options

I need to solve a large, sparse, linear system. At some point Method -> "Multifrontal" fails and a bit later also "Pardiso" ...
19
votes
0answers
300 views

Changes to Coefficient function in v10.2

In the version Mathemaica 10.4, I am very surprised that the core function Coefficient has changed, e.g., ...
19
votes
0answers
176 views

Status of all Evaluators?

Since I have 4 cores on my machine I typically have 4 notebooks open each with their own kernel evaluator. I'd like to construct a dynamic pane similar to the parallel kernels status window: But that ...
19
votes
0answers
1k views

How to protect existing MathLink connection from disconnecting

I am developing an application that consists of a Mathematica package and an external Java program. The purpose of the application is to read streamed data from a port and update a variable in the ...
18
votes
0answers
150 views

Inefficient memory storage for Dataset

Why Dataset doesn't serialize its contents, isn't it the whole point? I expect it to behave similar to python's pandas.DataFrame,...
18
votes
0answers
286 views

Internal`Bag memory usage

1. How does Internal`Bag handle memory inside a compiled function? (examples below) 2. Is there a way to explicitly free up memory used by ...
18
votes
0answers
385 views

Bug with Tooltip and ListPointPlot3D

Bug introduced in 10.0.0 and persisting through 11.2.0 The coordinates of a point in a three dimensional graph can be shown in a tooltip: ...
17
votes
0answers
208 views

GridGraph[{6,6,6}] crashes—can you reproduce this?

Bug introduced in 11.3 Occasionally, I see a kernel crash with GridGraph[{6,6,6}]. It is not easy to trigger. Sometimes it may require as many as 30 evaluations ...
17
votes
0answers
194 views

Why the Callout option makes plotting performance poor

Bug introduced in 11.0 and fixed in 11.1 The Callout option is a new option for plotting, but the performance is very poor, see bellow testing case. ...
17
votes
0answers
289 views

Break[] inside ColorFunction

Bug introduced in 8.0 or earlier and persisting through 11.0.1 or later ...
16
votes
0answers
160 views

Issue with undo after copying a string inside a string

Bug introduced in 10.0 and persisting through V11.3 Here's a small but annoying issue related to undo and copying of strings. Steps required to get the problem: Type ...
16
votes
0answers
319 views

Strange behaviour of integrals with Cos, Sin, and Exp

Bug introduced in 8.0.4 or earlier and persisting through 11.0.1 During the study of the problem How to solve this integration? I have discovered a strange behaviour of some integrals. I would ...
16
votes
0answers
214 views

Current (e.g., ca. 2016 / MMa 10 / WP 4+) best practices for embedding interactive content in WordPress?

My strategy, in the past, has been to embed interactive CDF files into my WordPress blog for student's to use (Much like the Wolfram Demonstration Project). As many know 1) the 'Plug in' ...
16
votes
0answers
297 views

Calling Sage functions from Mathematica

I recently found a very useful open-source math software called Sage, which provides many useful functions lacking in Mathematica. Since I'm more used to the Mathematica language instead of the ...
16
votes
0answers
537 views

C Code generated from Mathematica not working?

I am a .Net developer. I'm trying to build a Visual C++ application using C code generated from Mathematica (by another person). I don't have Mathematica installed on my machine. When I try to compile ...
16
votes
0answers
1k views

Using TetGen in Mathematica to get 3D Voronoi diagram

In this post, the use of TetGen for 3D Voronoi tesselation has been briefly discussed. However there is still no info about the use of TetGen to generate a 3D Voronoi diagram. The TetGen documentation ...
15
votes
0answers
179 views

How to design re-usable sub-modules?

There was a recent question asking about how to design modular packages: Declaring Package with dependencies in multiples files? This is an important issue for which unfortunately there is no One ...
15
votes
0answers
362 views

Wrong eigenvalues from a sparse matrix

Bug introduced after 5.0, in or before 8.0. I notice in the following example that wrong smallest 2 eigenvalues are resulted if calculating from a sparse matrix. But it gives correct result if we ...
15
votes
0answers
171 views

Why are delayed definitions in scoping functions NOT documented?

As outlined here, := may be used in scoping constructs like With to give delayed definitions, but this is undocumented. This ...
15
votes
0answers
586 views

Find the Panda and the Cat - Dudolf puzzle

I recently find this puzzle where you have to find the panda from a group of snowmen. Having a horrible eyesight I have to take help of mathematica to find it. I start with assumption that all ...
15
votes
0answers
518 views

Is there any way to export vector graphics with shading?

This has irked me for a while as I really feel its a significant shortfall in Mathematica's abilities but maybe I am missing something. I would like to export simple graphics with shading in a ...
15
votes
0answers
1k views

Circle with negative radius?

Bug introduced in 9.0 or earlier and fixed in 11.0.0 Why does this work: Graphics[{Circle[{0, 0}, -Pi/4]}] But this doesn't? ...
15
votes
0answers
187 views

Why does the Ver. 10.0 FrontEnd lose matching of parentheses when we insert quotations?

I am running Mathematica 10.0.1 on a four-year old iMac running OS 10.6.8. The following irritating behavior occurs regularly: I have a list with parentheses, and later on I need to add something to ...
15
votes
0answers
225 views

Is Mathematica 10 color managed?

With ColorProfileData Mathematica 10 can handle device-dependent color spaces. However images with embedded color profiles, e.g. ...
15
votes
0answers
219 views

Is there a convenient/automatic way of uploading a notebook into SE?

This post discusses how to streamline the other way - extracting code from a fragmented and longish SE answer but I imagine a two-way workflow like: Fashion an answer/question in an SE-templated ...
14
votes
0answers
294 views

New issue or new setting(s) of Goodness-of-Fit Tests in 11.3@student edition

Bug introduced in 11.3 or earlier and persisting through 11.3.0 or later Just before upgrading to 11.3.0 on last Friday, i was having p-value results from 11.2.0. Not worrying about upgrade may ...
14
votes
0answers
438 views

How to ImageRestyle high-res images?

Running v11.2 on Ubuntu 16, ImageRestyle[] crashes for me on an image of size 1600 x 1200 pixels. All the examples in the documentation use images around 500 x ...
14
votes
0answers
414 views

Mathematica HPC on AWS vs. Azure

I am looking for advice on deploying Mathematica for HPC in an on-demand cloud environment. I occasionally have Mathematica projects that require parallel computing and large amounts of RAM. These ...

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