This tag is reserved for questions where the problem has been vetted by this community and the observed behavior is confirmed to be a bug. Please do not use this tag for new questions.
18
votes
1answer
371 views
Transferring a large amount of data in parallel calculations
This question is inspired by one of @whuber's answers
Consider the following code:
...
20
votes
2answers
516 views
Strange ::usage behavior in v9
Note: This is fixed in 9.0.1.
Something has gone wrong with usage in Mathematica 9. Would someone tell me how to fix it?
I define a function ...
18
votes
2answers
752 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 ...
16
votes
1answer
307 views
How to fix broken InterpolatingFunction?
I have an InterpolatingFunction based on irregularly-gridded data, like this:
...
8
votes
2answers
658 views
14
votes
3answers
357 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 ...
24
votes
2answers
498 views
Template completion
In version 8, if one evaluates
test::usage="test[x,y]";
then types test, then shift-cmd-k (or shift-ctrl-k), a template ...
15
votes
2answers
322 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
1answer
309 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 ...
9
votes
2answers
209 views
How can I prevent ColorFunction from disabling antialiasing in graphics?
When I use ColorFunction, the appearance of my plots is ruined, changing from this
which has the normal smooth lines and antialiased fonts, to this
in which ...
9
votes
1answer
233 views
Poor anti-aliasing in Rotated text with ClearType on
There is a problem on my system that occurs when text is rotated 90 degrees as it is in frame labels. This only happens when ClearType is turned on, and only around 90 degrees of rotation.
I am ...
4
votes
1answer
290 views
3
votes
0answers
144 views
Unexpected behavior of GeometricTransformation
I have the following mapping on the complex plane:
$$
z \mapsto \tau \mu z-1,
$$
where $\mu$ is complex, $\tau$ is real number. I want to draw the image of left unit semidisk and play with $\tau$.
...
7
votes
3answers
190 views
Plotting a 3D list causes kernel to crash if x and y axes have vastly different scales
I have access to two versions of Mathematica, version 7.0.1 on Linux and version 8 on Windows. When I try the following two lines on version 7, the kernel quits when it tries to plot. In version 8 ...
7
votes
4answers
236 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 ...
5
votes
2answers
123 views
Is there something wrong with VertexConnectivity
As I noticed in the documentation VertexConnectivity is defined as the following
The vertex connectivity of a graph $g$ is the smallest number of vertices whose ...
27
votes
3answers
381 views
No warning when extrapolating with Plot
One of the most annoying "features" of Mathematica is that the Plot family does extrapolation on InterpolatingFunctions without ...
25
votes
2answers
343 views
DeleteDuplicates not deleting duplicates
It is not surprising that DeleteDuplicates[{5,5.}] returns {5,5.} because DeleteDuplicates ...
21
votes
0answers
384 views
What calendar is Mathematica using for dates in the distant past?
It appears that Mathematica treats all dates as proleptic Gregorian dates by default, a hypothesis that can be easily tested by using AbsoluteTime to compute the ...
13
votes
1answer
191 views
High memory use while exporting a BMP
Something mysterious is going on when exporting images. I'm using Mathematica 9.0.1 on Windows 7 (64 bit), and find that the memory use is excessive when exporting to a bmp. But it doesn't happen ...
15
votes
2answers
617 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 ...
9
votes
1answer
159 views
Precise cropping with ImageCrop
The built-in ImageCrop function "effectively removes borders from image whose pixel value distribution is almost uniform" (emphasis mine). I need an efficient ...
8
votes
3answers
386 views
Filling between two 3D surfaces
I know it is possible to create a filling in between two curves on a 2D plot, but is it possible to do the same in 3D?
My attempt like this:
...
6
votes
0answers
111 views
Break[] inside ColorFunction
f[x_?NumericQ]:= (Do[Break[],{i,1,2}];x)
Plot[x,{x,0,1},ColorFunction->(ColorData["Rainbow"][f[#]]&)]
Break::nofwd: No enclosing For, While, or Do found ...
15
votes
3answers
362 views
How can I set Grid alignments using numbers?
There is an example in the Alignment documentation (it also appears in the Grid documentation):
...
14
votes
1answer
1k views
Version 9 Blue Screen or Self-Test Error on Windows 7 64-bit
Update There is now an official response from Wolfram Support on this issue.
Having recently installed Mathematica version 9 64-bit on Windows 7, I keep running into Self-Test Errors evaluating ...
7
votes
5answers
236 views
TableAlignments->Left not working
For a very simple dataset TableAlignments->Left does not work:
...
3
votes
2answers
294 views
How to create an executable notebook in Mac OS X
All,
I am looking for help to create a notebook to be executed via terminal in MAC OSX. The notebook uses the front end.
This is what I have so far
...
14
votes
1answer
214 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,
...
12
votes
1answer
217 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 ...
10
votes
2answers
385 views
Interpolation of mostly-structured 3D data
this question relates to interpolation of 3D data and Improved interpolation of mostly-structured 3d data
I have an irregular 3d data set that is quite large (around 70,000 triplets---let's call it ...
8
votes
0answers
113 views
HorizontalGauge causes problem with ScalingFunctions -> “Log”
I am trying to use HorizontalGauge[Dynamic[expt], {0.1, 100}, ScalingFunctions -> "Log"], i.e. a gauge with a logarithmic scale. This creates an error, a graph ...
7
votes
1answer
235 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 ...
5
votes
1answer
181 views
Log-scale histogram bug
Not really a question, more a solution to what I call a bug in mathematica v8(.0.0.4). I already sent a bug report to Wolfram.
Problem
The documentation for the Histogram-function explains the ...
5
votes
2answers
195 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:
...
3
votes
0answers
79 views
Unexpected result when reading Cell with comment-lines by NotebookRead
When considering this question about re-formatting Cell (also this one), I encountered an issue which confuses me. I'll let the code itself speak:
Consider the ...
2
votes
1answer
146 views
Misaligned DensityHistogram, DistributionAxes & PlotRange
data = RandomReal[NormalDistribution[0.5, 0.1], {10000, 2}];
DensityHistogram[data, PlotRange -> 1, Method -> {"DistributionAxes" -> "Histogram"}]
The ...
