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6
votes
1answer
199 views

DistributeDefinitions not working for compiled functions

This is fixed in Mathematica 9.0.0. I'm having trouble with parallel evaluation of compiled functions. Here is a simple example illustrating the problem: ...
11
votes
2answers
347 views

Memory leak in FE?

A very abridged example of what was originally a major leak ...
25
votes
2answers
2k views

Debugging memory leaks

I've written my incredibly complex, incredibly elegant analysis function, that works great on small test data. But when I run it on my real (bigger) data set it keeps running out of memory. It turns ...
15
votes
1answer
388 views

Why does LogLinearPlot sample its argument outside the specified domain?

I experience a weird bug in the function LogLinearPlot. If the input is an interpolation function, such as the one created like this, ...
16
votes
2answers
718 views

Exporting a dashed plot with a color gradient to a vector graphics format ruins the dashing

When exporting a dashed plot with a color gradient to a vector graphics format such as EPS or PDF, the dashing is partly ruined. For example, this command: ...
15
votes
2answers
472 views

Pattern issues weird warning

Take for example head[b_[PatternSequence[_, _]]] := 9 I know this example serves no purpose as is. It also happens in useful examples such as ...
12
votes
1answer
183 views

NExpectation behaves oddly with EmpiricalDistribution

Note: this is fixed in version 9. My question concerns the usage of NExpectation and Expectation and why I see the behavior I ...
18
votes
1answer
643 views

When importing GIF animation, how to find the correct list of “DisplayDurations”?

When importing GIF animations with variable frame durations, the settings for "DisplayDurations" are not recovered correctly. As an example, I'm using the movie from this earlier question: Here I'm ...
14
votes
3answers
2k views

Mathematica script - passing command line arguments

When using Mathematica script #!/usr/local/bin/MathematicaScript -script Print[$ScriptCommandLine] and running it with some arguments: ...
5
votes
2answers
326 views

Create self-contained plots when Ticks or FrameTicks require external functions

Let's say I define tick marks for a plot in a separate function outside of the plot: ...
8
votes
1answer
438 views

Random variables with transformed discrete distributions cannot be applied to Probability[] function?

I have two discrete uniform distributions over same support: Dx = DiscreteUniformDistribution[{-8, 8}]; Dy = DiscreteUniformDistribution[{-8, 8}]; I use ...
9
votes
1answer
469 views

GeoDirection and GeoDistance Memory Leaks: How to Recover the Memory?

The functions GeoDirection and GeoDistance have memory leaks. To see this, run the example functions below and watch as the Physical Memory Available in the Windows Task Manager, Performance tab, ...
6
votes
1answer
392 views

Dialog crashes Mathematica

I have some dialog windows in a GUI of which one regularly crashes the kernel. I managed to focus on this particular piece of code, though I don't really know what causes the crash: ...
18
votes
3answers
580 views

Memory Leak in Frontend - anyone know a workaround?

When using Rasterize on a Graphics expression composed of many differently coloured Graphics objects memory is allocated in the frontend which is then not released or reused when a similar graphic ...
8
votes
2answers
881 views

Bug in Integrate for Mathematica

Consider the following: ...
16
votes
1answer
427 views

How to fix broken InterpolatingFunction?

I have an InterpolatingFunction based on irregularly-gridded data, like this: ...
35
votes
1answer
1k views

Transferring a large amount of data in parallel calculations

This question is inspired by one of @whuber's answers Consider the following code: ...
12
votes
1answer
246 views

Effects of single-point and multi-point calls of Point on plot range

Several Graphics primitives are listable. For instance, Point accepts lists of coordinates so that multiple calls to Point are ...
19
votes
2answers
1k views

Why does Mathematica give the wrong answer when integrating?

I integrate Integrate[Exp[I Cos[b - c]] Cos[b], {b, 0, 2 Pi}] Mathematica gives: 2 I Pi BesselJ[1, 1] Which is indepedent ...
2
votes
1answer
163 views

VertexLabelStyle not found in Mathematica 8.0.0.0

I tried to use VertexLabelStyle, but seemed not recognized in my system with version number 8.0.0.0. Is this expected or I have missed something? From the online ...
3
votes
1answer
219 views

Avoid crash in recursive Dynamic

With the following Dynamic cell, I can reproducibly crash Mathematica, so do not try this unless you have saved all your work! ...
10
votes
2answers
456 views

Why does ListPlot ignore some global options?

Bug introduced in 7.0.1 or earlier and fixed in 8.0.1' Why does the following plot no use the global PlotMarkers option? ...
5
votes
1answer
402 views

Invisible \[Conjugate] glyph in the linux frontend

I have a very annoying problem. The Conjugate glyph (*) does not show when I type. That is, if I type \[Conjugate] or ⋮co⋮ then ...
5
votes
0answers
258 views

NullSpace[_, Method->“OneStepRowReduction”] is sometimes wrong; how can I work out when this happens?

(This is on MMA 7.0.1.0 on OS X) I've just found a large matrix m for which NullSpace[m] and ...
6
votes
1answer
151 views

Bug in LengthWhile?

Is this a bug or my MMA went insane or I'm missing something? LengthWhile[Reverse@IntegerDigits[1000], # == 0 &] works fine, but with SameQ instead of Equal, ...
10
votes
2answers
211 views

How to Write into multiple files?

Note: this is fixed in version 9. I want to put expressions into multiple files simultaneously, with the following code: ...
7
votes
4answers
299 views

Unexpected behavior from GatherBy in version 7

I have come across what appears to be a bug in GatherBy. It appears similar to the problem of using Table[Random[], {1000}] in ...
16
votes
3answers
401 views

How can I set Grid alignments using numbers?

There is an example in the Alignment documentation (it also appears in the Grid documentation): ...
15
votes
1answer
939 views

How to export and import Graphs with additional data?

I'm trying to export and then later import graphs with additional data added such as VertexLabels and EdgeLabels. When I export ...
15
votes
1answer
578 views

How to work with characters from CJK Unified Ideographs Extension B correctly?

Background: Recently I'm trying to deal with some Chinese characters which belongs to the CJK Unified Ideographs Extension B block. The motive comes from some further interest following a former ...