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.
8
votes
1answer
160 views
Cannot plot Quantity values with DateListPlot
Is there a way to use DateListPlot with Quantity values? I retrieved the following time series data from WolframAlpha:
...
13
votes
1answer
194 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 ...
6
votes
1answer
70 views
Erfc Not Returning Results Specified in Documentation
In the documentation for Erfc (under "Possible Issues"), the following command returns a number that is extremely close to 2:
However, when I run this same command in a fresh kernel, I get:
...
5
votes
1answer
143 views
Font size in PDF export with legended plots not working
I need to export plots as PDF with a given image and font size. Everything is working fine if there is no legend for that plot. However, if I want to export legended plots, the font size is decreased ...
8
votes
2answers
147 views
Strange behavior of PlotMarkers with ListLinePlot[] and InterpolationOrder->0
I want to create a ListLinePlot with InterpolationOrder->0. However, when using plot markers like in
...
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 ...
10
votes
0answers
136 views
Quiet doesn't work with FindRoot when using Brent method
The following has no solution:
FindRoot[x == 1, {x, 0.25, 0, 0.5}]
And Mathematica correctly warns us:
FindRoot::reged: The point {0.5} is at the edge of the ...
9
votes
1answer
234 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 ...
10
votes
2answers
375 views
Maximum size of TIF files in Mathematica
I have a question concerning the maximum size of TIFF files Mathematica can handle. According to the TIFF 6.0 specification -revision 6.0 (see: ...
8
votes
2answers
179 views
24
votes
2answers
500 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 ...
10
votes
0answers
127 views
func::usage needs to be run twice?
There is an annoying problem that I can't figure out why it's happening. I have defined a usage for a my function tensorA:
...
10
votes
1answer
187 views
Forming Cone with Tube fails to work in version 9.0.1
I use two different radii in a Tube expression to draw a cone. I know for a fact that this worked in Mathematica 8, but when I reevaluated my code in versio 9.0.1
...
10
votes
1answer
252 views
Grid layout problems: different sizes when rendering on Mac and Windows
From the documentation for ItemSize:
{w,h} make all items the specified width and height
and
In Grid, w is measured in ems, and h in line heights.
This ...
14
votes
1answer
418 views
Bug in Solve (Mathematica 9)
Just came across the strangest bug under both Mathematica 9.0.0 and 9.0.1. If one enters:
Solve[m == p Sin[x] && -Pi/2 < x < Pi/2, x]
... then ...
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 ...
6
votes
1answer
147 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:
...
8
votes
0answers
114 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
0answers
110 views
PlotMarkers doesn't inherit PlotStyle when Graphics[a] isn't a List[]
Could somebody explain, why Circle does not inherit the PlotStyle of the plot when used as ...
20
votes
4answers
553 views
An apparently “simple” limit?
Let $c$ and $h$ be real values.
I was using Mathematica to compute the limit $(h \rightarrow \infty)$ of the following expression:
$$
\frac{\left(h^2 +c^2 h^2 + \sqrt{4 h^2+\left(h^2+c^2 ...
5
votes
1answer
167 views
The shortcut for Subsuperscript doesn't work?
The document for Subsuperscript says that:
To enter a subsuperscript in a notebook, use either Ctrl+_ to begin a
regular subscript or Ctrl+^ to begin a regular superscript. After
typing the ...
25
votes
2answers
348 views
DeleteDuplicates not deleting duplicates
It is not surprising that DeleteDuplicates[{5,5.}] returns {5,5.} because DeleteDuplicates ...
15
votes
1answer
201 views
Adding three integer sparse matrices is very slow. Adding only two is fast
Adding more than two sparse matrices in one step in Mathematica 9 is very slow (in fact I couldn't even wait for it to finish).
Here's an example. Let's generate a large sparse matrix:
...
5
votes
2answers
135 views
11
votes
3answers
254 views
Suspecting bug in Parallel Framework
I've reduced my actual problem to:
ParallelEvaluate[
Module[{slot=1},
Slot[slot]
]
]
gives error messages that I think shouldn't be there. It seems I can ...
7
votes
1answer
171 views
How can I display a multigraph with different colored edges?
I'm new to Mathematica(version 9) and I'm trying to display a multigraph with different colored edges. Here's my code so far:
...
13
votes
1answer
208 views
Problems with images caused by which stylesheet is used
Update
This looks now like it was a bug in Mathematica version 8, because
everything works as expected - at least for this minimal example - in
version 9. (As an aside, I couldn't seem to find ...
3
votes
1answer
120 views
Expectation of CauchyDistribution
I've noticed this strange behavior and I'm wondering if it's a bug.
I define a Cauchy distribution:
c = CauchyDistribution[0, 1];
If I evaluate ...
4
votes
1answer
273 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 â‹®coâ‹® then ...
3
votes
2answers
296 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
...
13
votes
1answer
288 views
RandomVariate returns values outside the support of a PDF
Let $X$ be a random variable with pdf:
dist = ProbabilityDistribution[1/(Abs[x]*Log[Abs[x]]^2), {x, -E^-2, E^-2}]
Here are some pseudo-random drawings from it:
...
2
votes
1answer
265 views
Mathematica 9 behavior with derivative of a sum
In:
D[Sum[Sin[x],x],x]
D[Sum[f[x],x],x]
Out:
1/2 Cos[1/2 (-1 - Pi + 2 x)] Csc[1/2]
0
Function f is undefined, but Mathematica 9 counts it as constant?
...
3
votes
0answers
77 views
An recurrence equation that can be solved in version 7 but not in version 8
A friend of mine showed me this code sample:
RSolve[{a[n] == a[n - 5] + 1, Sequence @@ Table[a[i] == 1, {i, 5}]}, a[n], n] // Timing
It's solved by version 7 in ...
3
votes
1answer
79 views
Discrepancy with TakeWhile between RandomInteger result and list on Linux
I have to following code that solves a problem for me. The example that is given to us is as follows:
lst = {1,-2, 3, 4,5,-3, -4, 9,7,0,8}, predicate = ...
0
votes
0answers
189 views
Mathematica 9's NDSolve treats sum as an integral [closed]
Sum and integral are threated the same by NDSolve in Mathematica 9:
The problem was also in Mathematica 7. I submitted a bugreport to the technical support, they admitted this is a bug, fixed it in ...
6
votes
0answers
112 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 ...
6
votes
1answer
498 views
What bugs have you found in mathematica 9? [closed]
Since there is no public facing bug tracker for mathematica 9, let's try keeping a list here. One potential bug per answer. Others can confirm (or otherwise) in comments to each answer.
9
votes
2answers
211 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 ...
8
votes
2answers
660 views
9
votes
1answer
100 views
DateList not using current year when a year is not specified
According to the documentation when using DateList but not giving it a year it should use the current year. It is not doing that for me. Instead it uses 1900. ...
21
votes
0answers
386 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 ...
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 ...
8
votes
3answers
389 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:
...
3
votes
1answer
188 views
EstimatedProcess hangs with documentation example
Not sure if this is a bug or a typo but for the first example of the ARMAProcess in Mathematica 9 we have:
...
10
votes
1answer
170 views
Issue with PathGraph
I am having a strange issue with PathGraph. Executing
PathGraph[{a, b, c}]
or ...
4
votes
1answer
363 views
Nonsense Data with Wolfram Alpha + Mathematica?
I am trying to learn how to interface with WolframAlpha. When I try using the Mathematica interface I get nonsensical data. I don't know if this is a bug or if I'm doing it wrong.
My goal is to ...
7
votes
1answer
236 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 ...
2
votes
1answer
146 views
Problem creating MeanPredictionBands
I have a problem creating MeanPredictionBands for my function which I fitted using NonlinearModelFit. I have a complex-valued ...
4
votes
1answer
78 views
Strange behavior of DateList when converting string
DateList experiences some strange behavior which i cannot explain.
This code works fine:
...
5
votes
1answer
182 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 ...
