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. Please use the standard bugs header instead of version tags in conjunction with this tag.

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12
votes
1answer
400 views

Mathematica9: NDSolve slows down after repeated calls

Bug introduced in 9.0 or earlier and persisting through 10.4.1 or later I have noted that in Mathematica 9 my code, which involves a lot of calls to NDSolve, ...
0
votes
1answer
162 views

Background of PlotMarkers

I use the StandardReport style sheet in my notebooks, but I would like to export plots without any backgrounds. Apparently, there isn't a global option to change the background on a plot, so I change ...
5
votes
1answer
145 views

Systematic increase in runtime [duplicate]

When I run this simple code, which repeats many times the exact same operation (a differential equation), the runtime (given by Timing) increases systematically, ...
4
votes
1answer
62 views

DSolve apparently returns wrong symbolic result

Bug introduced in 9.0 and persisting through 10.4.1 I am trying to get Mathematica to calculate the correct solution $x(t)$ of the following ODE: $\dot x = a x(t)+ct^n$ for $a>0$, $n\ge 1$, $c&...
3
votes
1answer
230 views
+50

The unexpected behavior of FindMinimumCostFlow?

I need to verifiy which behavior is a bug or I misunderstand the documentation.So I give a bounty for it. I'm at a loss to understand the behavior of the ...
3
votes
0answers
66 views

Display of ConfusionMatrixPlot depends on Stylesheet [duplicate]

I´m using Classify and do the testing via ClassifierMeasurements. Now I observed that ConfusionMatrixPlot is not shown correctly when using StyleSheet Report(default). Maybe you can reproduce (example ...
4
votes
1answer
286 views

How do I edit the background of Axis labels in my plot?

I'm using the standard report stylesheet in Mathematica and when I output a plot, I've set it up so that I get a white background, however the axis labels still have a gray background. How do I change ...
0
votes
1answer
107 views

My plot is cut off if a frametick is “0” but resized if a frametick is “0.” Why?

I have been trying to customize the frame ticks and frame label around a certain contour plot and am running into very strange behavior where the graphics will get cut off by ...
10
votes
0answers
106 views

ErrorListPlot ignores some exact data points

Possible bug? Or am I missing something / expecting too much? Forgive the seemingly obscure data points but they're where I've noticed a problem. ...
2
votes
0answers
79 views

ListPolarPlot goes crazy when PolarAxes->True

Bug introduced in 9.0 and fixed in 9.0.1 I think I am experiencing the same/similar problems as this user. Mathematica Version: 9.0 for Mac OS X x86 (64-bit) (November 20, 2012) Computer: Mac OS ...
17
votes
1answer
251 views

The character sequence “\\. d” triggers line break in strings

Bug introduced in 7.0 or earlier and persists through 10.4.1 Bug isn't present in version 5.2 Update: Sjoerd pointed out that this happens with any string and it is not related to StringForm. Just ...
9
votes
1answer
124 views

ArrayPlot with a user-defined color function is misbehaving

Bug introduced in 10.0 and persisting through 10.4.1 or later I am using ArrayPlot to show some arrays with values from 0 to 1. I want 0 to be black and 1 to be ...
11
votes
1answer
238 views

Problem with PlotLabels

Bug introduced in 10.4 and persists through 10.4.1 Version 10.4 introduced the PlotLabels option in ListPlot and similar ...
6
votes
1answer
91 views

ArrayPlot gives wrong plot legend, how to fix?

Bug introduced in 10.0 and persisting through 10.4.1 My minimal working example is the code ArrayPlot[{{1, 0.1, 0}, {0.1, 0, 0}}, PlotLegends -> Automatic] ...
5
votes
2answers
92 views

How do I construct a Pattern with Alternatives and PatternSequence without getting Pattern::patvar messages?

Bug introduced 8.0 or earlier and persisting through 10.4.1 [CASE:3631078] In Mathematica 8 and 9, defining this rule: ...
7
votes
2answers
115 views

Bug in NDSolve/WhenEvent?

Bug introduced in v10. I'm fairly sure the following is a bug, and I would normally just report it to WRI. However, this is related to my answer to When using NDsolve, how to determine the ...
6
votes
0answers
49 views

TableDirections bug?

Bug introduced in 10.0 and persisting through 10.4.1 Here is the example in the TableDirections documentation: ...
6
votes
1answer
114 views
5
votes
0answers
99 views

FindMaximumFlow generates a weird result

Bug introduced in 10.0 and persisting through 10.4.1 Try the following program: ...
4
votes
1answer
58 views

DateObject with DateFormat displays incorrectly in Dataset

DateObjects with DateFormat option appear to have the first date part truncated when displayed in a ...
7
votes
1answer
141 views

Plot3D producing wrong axis labels

This is some rather perplexing behaviour. If I try to specify labels for the axes of a 3D plot, sometimes they will go completely belly up: ...
3
votes
1answer
55 views

Why does the Part::partw error appear when using DSolve?

I solved the following ordinary differential equation for $F(x)$ using DSolve in Mathematica $$ \begin{align} \begin{split} & A x^2 (x^2 + 1) F'''(x) - \left(3 A (b - 2) x^3 + a x^2 +A (b - 2)x +...
2
votes
0answers
51 views

Help with GeoRegionValuePlot

I am trying to get a map with 4 colors, I have several regions with values from 0 to 3 and I want to color those regions with value 0 in white, with value 1 in yellow, with value 2 in orange and with ...
4
votes
1answer
98 views

Issues with modeling pulses in a very simple system of DAEs

Bug introduced in 10.4.1 or earlier Bug has been confirmed by WRI [Case:3594387]: It does appear that the NDSolve function is not behaving properly in this case and an incident report has been ...
9
votes
1answer
121 views

How useful is $EvaluationEnvironment?

Bug introduced in 10.0 and persisting through 10.4.1 A support case with the identification [CASE:3618534] was created. [...] I filed a report with our development team raising the issues [.....
8
votes
2answers
155 views

Integrate and NIntegrate disagreeing over branch cut of Sqrt?

Bug introduced after v8.0.4 and before v9.0.1, and persisting through v10.4.1. In Mathematica 10.2 I'm trying to integrate this piecewise continuous function, but ...
6
votes
1answer
56 views

Notebooks created after prompting a Modal dialog

Bug reproduced in 10.3.1 and presisting through 10.4.1 From: Note: Modal dialogs will prevent users from accessing other notebooks in the front end while the ...
2
votes
1answer
102 views

DateListPlot inside DynamicModule updates continuously

bug fixed in 10.4.1 Can any one try this code and see if it is updating continuously without changing the controllers: ...
8
votes
0answers
82 views

Why isn't ToElementMesh figuring out what my boundary is in 3D?

I am trying to change the element mesh for a FEA application I'm doing. I thought I understood it, when I did it in 2D. Here's my shape: ...
21
votes
0answers
172 views

Bug with MapAt, Span, and Association?

Bug introduced in 10.0 and persisting through 10.4.1 or later Related to Mapping (Query) a function at multiple locations in nested data via All, Span, it seems to me that the behavior of ...
9
votes
0answers
54 views

Issue with undo after copying a string inside a string

Bug introduced in 10.0 and persisting through 10.4.1 or later Here's a small but annoying issue related to undo and copying of strings. Steps required to get the problem: Type ...
3
votes
1answer
86 views

Kernel crash after simple input of variable defintion

Fixed in 10.3.0 I have encountered a very surprising and annoying kernel crash: ...
7
votes
3answers
79 views

Kernel randomly aborting

Bug introduced in 10.0 and fixed in 10.3 So after 2 days of trying to figure out what's going on, I figure I should post here as I don't have enough knowledge about the Mathematica evaluation ...
11
votes
2answers
123 views

Why are some of the isomorphisms not bijective?

Bug introduced in 10.4 Mathematica computes all the isomorphisms between graph g1 and g2: ...
7
votes
1answer
166 views

How to get star coordinates for a given time

Fixed in 10.3.1 In the documentation of StarData, there is an example that shows how to get the altitude of Sirius at a given time (in the horizontal coordinate ...
32
votes
0answers
810 views

Input Aliases in Mathematica 10

Bug introduced in 10.0.0 and persisting through 10.4 or later In Mathematica 9, typing in an input alias such as intt would result in the keyboard cursor ...
8
votes
1answer
139 views

Symbolic and numeric limit disagreeing on branch cut of ArcTan

Bug introduced after v8.0.4 and before v9.0.1, and persisting through v10.4.1. Investigating comments to my previous question lead me to the following problem: ...
9
votes
1answer
162 views

Wrong limit: Limit[(1 + (-1)^n/n)^n, n -> Infinity]=1 (Mathematica 10.4 and W-Alpha)

Since $(1-\frac{1}{n})^n\to 1/e$ and $(1+1/n)^n\to e$, the sequence $(1+\frac{(-1)^n}{n})^n$ has no limit as $n\to\infty$, but has limits for odds and even numbers. If $n$ were taken to be real, there ...
68
votes
2answers
14k views

Mathematica 10.0.x freezes in Initializing kernels

Bug caused by paclet update and fixed by paclet update. I updated to Windows 10 and have been running Mathematica fine on it for over a month. For some reason, it has just stopped working. I don't ...
5
votes
1answer
73 views

FunctionInterpolation produces many error messages when given high-precision input [duplicate]

Both FunctionInterpolation[1, {x, 0,1.00000000000000004}] and FunctionInterpolation[1.00000000000000004, {x, 0, 1}]; ...
13
votes
1answer
306 views

How to use Get on a folder

In the documentation for Get it says: If the file found by <<name is a directory, the Wolfram Language will try to ...
18
votes
2answers
1k 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 ...
3
votes
1answer
153 views

Is this a bug in NCAlgebra library?

In course of my work with NCAlgebra package for Mathematica, http://math.ucsd.edu/~ncalg/ , I encountered unexpected behavior of replacements. I am using ...
10
votes
1answer
143 views

Issues with PlotRange!

When use the following command to plot a graph: Plot[x^Gamma[x - 1], {x, 0, 1}] or: ...
10
votes
1answer
247 views

Vastly incorrect answers obtained by increasing WorkingPrecision with modified Bessel functions

Bug introduced in 7.0 or earlier and persisting through 10.4.1 This is a follow-up to this question regarding numerical instabilities occurring with modified Bessel functions. In trying to explore J....
5
votes
0answers
67 views

Cannot reproduce VectorDensityPlot solution from question 37459

Bug introduced in 10.0 or earlier and persisting through 10.4.1 or later (Reported to Wolfram Technical Support on 24 May 16) Using Mathematica 10.4.1 for Microsoft Windows (64-bit) (April 11, 2016),...
19
votes
4answers
652 views

LogPlot axes labels destroyed when working in high precision

Bug introduced in 7.0 or earlier and persisting through 10.4.1 (I'm using Mathematica 8.) I have a Taylor series: poly = Normal[Series[E^x, {x, 0, 10}]] I ...
4
votes
1answer
70 views

Plot option Filling conflicts with option PlotLabels

The regulars here discuss approaches to numerically unstable systems of higher-order PDEs, and I cannot even paint by numbers … (sigh) A Plot[] of simple curves with ...
15
votes
5answers
512 views

How can I change the thickness of tick marks in BarLegend?

Bug introduced in 10.1 or earlier and persisting through 10.4.1.0 or later This answer explains how to change various undocumented options for BarLegend with <...
5
votes
1answer
99 views

TrackingFunction not working properly if range containes a mathematical constant

Bug introduced in 10.0 and persisting through 10.4.1 or later Answering this question I had to realize that TrackingFunction isn't working properly if at least ...