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6
votes
0answers
100 views

Compiled function crashes kernel when trying to list over different length arguments

I'm trying to speed up a tally/binning operation that I have to run many times. I have many lists of between 1 and 10 numbers from the range [1,5] and I want to ...
7
votes
2answers
306 views

Problem with NIntegrate when WorkingPrecision is specified

I am trying to evaluate this integral numerically: $$ \int_0^{\infty } m \exp (-m) J_1(m){}^2 \, dm $$ Everything is OK when only the integration method is specified: ...
13
votes
1answer
362 views

Why does Mathematica give an incorrect answer to this multiple integral?

This is not a new problem but I would like to understand why Mathematica gives the result that it does. (Volume of a hypersphere) ...
5
votes
4answers
191 views

FrameLabel not printing completely

Running this code: ...
15
votes
2answers
269 views

Upon PDF export, edgeless rectangles do not tile perfectly, and corners may be cut. Is this a bug?

Note: this problem is no longer present in version 10. Exporting the following as a PDF file ...
12
votes
1answer
249 views

ToNumberField won't recognize Root as an explicit algebraic number

In Mathematica 9.0.1, it appears that ToNumberField will not always recognize a Root object as an explicit algebraic number. ...
3
votes
0answers
383 views

Cannot save file

Hello I have a problem in saving files in Mathematica. I can't save not only notebooks but also figures. When I choose to save the notebook it open a window that says: Mathematica could not find ...
8
votes
0answers
124 views

Help bogged down at first query [duplicate]

When I open help at the first time in a mathematica session and I submit a query it always get bogged down for many seconds until a message appears as in the picture. Then I select continue waiting, I ...
4
votes
0answers
191 views

Strange result from evaluating a Limit expression

When I evaluate the limit of (1-Cos[x]) Sin[1/x] at x = 0 in Mathematica 9, I obtained ...
7
votes
1answer
138 views

Crash with subsetting TemporalData

The first line gets a single sample path for an M/M/1 queue for time between 0 and 100. No problem, I can plot it, etc. ...
6
votes
1answer
128 views

Tooltip not working in web deployed cdf

I deployed a CDF file in a web page. I used both Mouseover and Tooltip functions. They both work in the raw CDF file. The ...
5
votes
2answers
236 views

Is there something wrong with VertexConnectivity

Note: this is fixed in version 10. As I noticed in the documentation VertexConnectivity is defined as the following The vertex connectivity of a graph $g$ is ...
11
votes
2answers
249 views

SaveDefinitions->True changes the displayed image

I have a Manipulate[ ] that displays an image with a superimposed Locator object. It works fine when I have ...
3
votes
1answer
150 views

Something wrong with RectangleChart and Tooltip?

Currently I'm working on a diagram showing the merit order of power plants in the Netherlands. On the horizontal axes you see the cumulative power and on the vertical axes you see the costs per MWh. ...
6
votes
0answers
151 views

Mathematica 7: “LessEqual::nord:” error when using NMinimize on a real function

I encounter a problem (Mathematica 7) similar to Strategies to avoid LessEqual::nord in NMinimize? but the advised strategies don't work for me. Also, I get different results with different ...
3
votes
2answers
125 views

CommunityGraphPlot doesn't size

When I need to plot a 'large' graph with CommunityGraphPlot the output is always sized at the Mathematica default value. The Graph object itself can be resized with ImageSize option. However that ...
3
votes
1answer
384 views

BarChart and Log Scale results in different bar origins

I want to create a bar chart from two different data sets. ...
1
vote
2answers
676 views

Weird NDSolve behavior with Piecewise (MMA9)

NDSolve in Mathematica 9.0.0 (MacOS) is behaving strangely with a piecewise right hand side. The following code (a simplified version of my real problem): ...
3
votes
3answers
703 views

ParametricPlot and PlotLegends don't seem to cooperate

I noted that only part of the legend shows up in ParametricPlot using v9's PlotLegends: ...
3
votes
1answer
220 views

Sum of positive terms gives negative answer

Mathematica evaluates Sum[((n - y - 1)*(n - y)^2*n^y)/y!, {y, 0, n - 2}] as -2 e^n n. This should not be a negative value. ...
11
votes
3answers
806 views

Why doesn't my script work when I redirect stdout?

I'm using Mathematica Home Edition 9.0.1 on Mac OS X 10.8.2. I have this script: ...
10
votes
2answers
1k views

Exporting a .xlsx file with about 500 columns

When I want to Export["text.xlsx", data] where data is a matrix with 500 columns and 10000 rows, I get the error message: ...
2
votes
0answers
168 views

Problem when merging cells including commentary

This is a more of a problem report than a question. When merging the two cells Cell1: foo (*foobar*) bar and Cell2: ...
11
votes
1answer
242 views

FindInstance returns Indeterminate in version 9, but not in 8

Here is a trivial system of equations in three unknowns for which FindInstance obtains a solution: ...
10
votes
1answer
385 views

Kelvin per Kelvin Difference

I'm trying to use Mathematica units more often, but I've run into the following problem: ...
6
votes
1answer
78 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: ...
9
votes
2answers
262 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 ...
7
votes
1answer
465 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 ...
13
votes
1answer
294 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 ...
11
votes
1answer
327 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 ...
4
votes
1answer
125 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 ...
10
votes
3answers
331 views

“Stacked” BarChart with BarOrigin $\to$ Top makes y-tick marks negative

This bug was fixed in version 10.0.0 When BarChart layout is "Stacked", setting ...
15
votes
1answer
435 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 ...
8
votes
2answers
510 views

Problem with ContourPlot3D

The following line works fine: ...
8
votes
2answers
441 views

Distorted graphics when using custom ticks and AspectRatio -> Full

Bug introduced in 7.0.1 or earlier and partially persists through 10.0.1 or later I am having a problem using custom tick specifications along with ...
10
votes
1answer
245 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 ...
16
votes
1answer
697 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
487 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 ...
9
votes
1answer
261 views

PlotMarkers doesn't inherit PlotStyle when first argument to Graphics isn't a list

Could somebody explain, why Circle does not inherit the PlotStyle of the plot when used as ...
10
votes
1answer
426 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 ...
8
votes
3answers
387 views

DataEncoding and compression in HDF5 format

I would like to export data in HDF5 format with Mathematica 9. The Mathematica manual about Import and Export of this format can be read here. As I'm dealing with large arrays, export often lead to ...
5
votes
1answer
120 views

Syntax highlighting in patterns with built-in functions

While working on my own plotLegends package I encoutered some weird behaviour of the front end's syntax highlighting. I reduced the problem to the following minimal ...
26
votes
2answers
772 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 ...
3
votes
1answer
2k views

NSolve: Mathematica 9 issue

In Mathematica 8 the following expression evaluates and returns a result in terms of InverseFunction: ...
27
votes
2answers
770 views

DeleteDuplicates not deleting duplicates

It is not surprising that DeleteDuplicates[{5,5.}] returns {5,5.} because DeleteDuplicates ...
21
votes
4answers
814 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 ...
15
votes
1answer
295 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: ...
2
votes
2answers
265 views

Misaligned DensityHistogram, DistributionAxes & PlotRange

data = RandomReal[NormalDistribution[0.5, 0.1], {10000, 2}]; DensityHistogram[data, PlotRange -> 1, Method -> {"DistributionAxes" -> "Histogram"}] The ...
5
votes
2answers
152 views

CompiledFunction crashes kernel

This crashes my kernel ...
10
votes
1answer
1k views

How to work around Mathematica hanging when showing a large SparseArray?

Note: This is fixed in 9.0.1. In Mathematica 9, if I display any large SparseArray object in the default way (which looks something like ...