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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14
votes
1answer
120 views

Unexpected pattern matching behaviour: PatternSequence vs. Optional

fixed in 10.1 (windows) Consider the following pattern-matching expressions: ...
4
votes
1answer
156 views

What is “MouseDragged”?

Maybe I'm picky but I don't consider static pressed button: "dragging". EventHandler[Framed[1], {"MouseDragged" :> (Print@RandomReal[])}] neither does ...
6
votes
1answer
140 views

Long running ToElementMesh with very “large” domains

I'm trying to solve a system of PDE over a large domain. This doesn't means I need to have a huge amount of mesh points and mesh elements to discretize the domain. Just that the domains has a big ...
4
votes
0answers
69 views

Extraneous reaped data with NDSolve and WhenEvent

Bug introduced in 9.0 or earlier and fixed in 10.1 In exploring What is the range of values $x$ for which $f(x)$ is higher than $k$ over a given domain?, I came across the following strange ...
2
votes
2answers
134 views

KeyMap on a flat Dataset (i.e. Dataset@Association)

How can I go from Dataset[<|"A" -> 1, "B" -> 2, "C" -> 3|>] to ...
2
votes
3answers
164 views

Custom Grid Lines for ProbabilityScalePlot

I'm plotting up some data using a ProbabilityScalePlot in Mathematica 8. It currently looks like so: Code: ...
0
votes
0answers
60 views

Strange behavior of AssociationMap [duplicate]

here is what I've searched over stackexchange I'm on windows 8.1 x64 with Mathema... 10.0.2. sometimes, Definition[AssociationMap ]=Null I found ...
6
votes
1answer
214 views

Incorrect evaluation of integral involving a DiracDelta, whose argument has infinitely many zeros

Let's say $X>0$ is a random variable with probability density $p_X(x)={\rm e}^{-x}$. Define the random variable $Y=\sin(X)$. From the transformation theorem for probabilities we know that its ...
21
votes
1answer
526 views

Excessive memory use by Mathematica kernel in 10.0.2 after executing simple commands

Update: The issue has been fixed in Mathematica 10.1! :) Warning: the code below may hang your system if you have the Suggestions Bar enabled in Mathematica < 10.1. When issuing the ...
7
votes
0answers
107 views

One less arrow vector than asked for

Bug introduced in v10 and persisting through 10.2 or later Consider the following code: ...
2
votes
1answer
156 views

How can I make a map of Sierra Leone at the district level?

Hi I am trying to make a map of Sierra Leone and am running into trouble. SL has 4 provinces: Northern, Southern, Eastern, and Western, which are diced up into 14 districts as shown here: ...
7
votes
1answer
157 views

Instant kernel crash when using `+=` on `SparseArray` with repeated entries

Bug introduced in 5.2 and fixed in 10.1.0 Not sure if this is known behavior or not, but the following two lines produce an instant kernel crash (I'm using Mathematica 10.0.1 Windows 64-bit): ...
5
votes
3answers
390 views

Bug in complicated Limit

The code Limit[Log[2 - Sin[x]*Cos[x]], x -> Infinity] outputs Interval[{0, Log[3]}] in Mathematica 10.0.2.0 . It should ...
5
votes
0answers
120 views

Kernel sometimes quit after second evaluation of ListVectorPlot

But introduced in 10.0.0 and persisting through 10.1 (update: bug remains in 10.1 on windows) In Mathematica 10.01 Linux x386 execution of the expression ...
3
votes
2answers
134 views

BUG: Problems generating FEM ElementMesh in 1-D

fixed in 10.1 (windows) I'm trying to build an ElementMesh for a simple 1-D problem. First, I build the boundary ...
9
votes
0answers
119 views

Why is this evaluation halved when adding units?

Why does this strange behavior occur when dealing with units and quantities? ...
2
votes
0answers
48 views

Syntax error in debug mode

Bug persists through 10.1 It appears that in debug mode, the \[Piecewise] symbol gives syntax error. Is it a bug? Are there ways to fix that except write it in ...
3
votes
1answer
85 views

Evaluate specific cells in Mathematica

I have a very simple problem with Mathematica that I couldn't find an easy answer to. I have long notebook with a lot of cells and want to evaluate a specific cells inline from another cell. So far I ...
1
vote
1answer
107 views

Efficient method of raising matrix to a variable power?

I have a $2 \times 2$ matrix $A$, where each element is a 12th order polynomial in a parameter $a$. I need to raise this matrix $A$ to the $-t/T$ power, where $T$ is a known scalar (for this ...
2
votes
2answers
258 views

After definite integration the result is still integration variable dependent!

This integral $\int _{-\infty }^{\infty }\int _{-\infty }^{\infty }\int _{-\infty }^{\infty }\frac{\exp \left(\frac{2}{x^2+y^2+z^2+1}-2\right)}{\left(x^2+y^2+z^2+1\right)^4}dzdydx$ or ...
4
votes
1answer
106 views

LogLogPlot plugs in zero

Bug introduced in 10.0 and fixed in 10.0.2 In testing the answers to Plot result of non analytical-integral in V10.0.1, I came across this behavior of ...
3
votes
2answers
290 views

SystemException[“MemoryAllocationFailure”, …] with NMaximize

I have a complicated analytical expression that needs to be maximized with respect to a parameter t: ...
13
votes
5answers
751 views

Gap in a continuous plot

Why do I get a gap in the plot below and how can I fix it? (If you are interested in it, you can see a new related question: How to plot an implicit value funtion, which is also a little chanlenging) ...
7
votes
1answer
203 views

10.0.2 breaks a recursive “trie” query

10.0.2 Dataset type system complication breaks a recursive trie constructor that worked in 0.1: ...
25
votes
3answers
2k views

Generating 250 random points crashes the kernel, but not 249

Fixed in 10.1.0. Consider the following function, which generates uniformly random points on the surface of the 2-sphere: ...
2
votes
0answers
86 views

Font rendering difference between .jpg & .pdf [duplicate]

I have some planar graphics involving lines and text, produced by Line[] and Text[], accepting the default font on the latter. ...
4
votes
0answers
82 views

Bug in ExportString with Associations as ExpressionML?

bug present as of 10.1.0 If I try to export this toy code as ExpressionML or just XML: ...
8
votes
4answers
369 views

Definite integral incorrectly giving a nonreal value

fixed in 10.1 (windows and Mac OS X) In Mathematica 10.0, when I enter N[Integrate[Sqrt[1+x^3],{x,-1,3}]] I get a nonreal value (i.e., the imaginary part is ...
11
votes
0answers
202 views

Bug in plotting function using FindMinimum?

Bug introduced in 10.0 and persisting through 10.2 or later While working on an answer to RegionPlot from NDSolve, I came across this strange behavior of ...
2
votes
0answers
41 views

Error message with RegionPlot after SetOptions

I get an error message with SetOptions[RegionPlot, ImageSize -> Medium]; RegionPlot[u v (1 - v) >= 10, {v, 0, 1}, {u, 0, 100}] that says ...
7
votes
2answers
306 views

10.0.2 another Dataset type system (inference?) warning

Bug introduced in 10.0.2 The warning below seems unrelated to these issues: Did 10.0.2 break some forms for named slots? and 10.0.2 mapping Association to Dataset warning. First noticed w/ ...
7
votes
1answer
211 views

Suspected bug in Integrate

Bug introduced in 9.0.1 or earlier and fixed in 10.1.0 In version 10.0: ...
8
votes
2answers
181 views

Fitting higher order ARIMA models hangs, never completes

I'm working with some data that is 12 month seasonal. However, when I try to fit it to an ARIMA(12,1,3) for instance, my PC's CPU cranks up to 100% and the job never finishes. Here's some sample code. ...
5
votes
0answers
189 views

Mathematica can't export $\sqrt{}$ [duplicate]

Fixed in version 10.1.0 It looks like version 10 can't export to pdf correctly with square root. For example: ...
6
votes
2answers
268 views

Mathematica 10 ListPointPlot3D PlotTheme bug?

I am using Mathematica 10 to generate a 3D point plot of a crystal lattice structure. I wanted to set the PlotTheme to ...
25
votes
2answers
325 views

Bug in ArcLength?

fixed in 10.1 (windows) With Mathematica 10.0.2: ArcLength[Line[{{0, 0}, {1, 0}, {2, 0}}]] ArcLength[Line[{{0}, {1}, {2}}]] (* 2 *) (* 2 *) However, ...
2
votes
0answers
161 views

Can't type in notebook in version 10

After upgrading to version 10, I sometime get into the situation that I can enter nothing to the notebook. The Mathematica seems alive but it doesn't take any input from the keyboard. I tried to quit ...
7
votes
3answers
302 views

Appending and Prepending columns to a dataset in 10.0.2.0

fixed in 10.1 (windows) I just experience a problem in prepending columns to a dataset. I did this a hundred times in 10.0.1.0 - no problems. Now it seems as if it is only possible to ...
18
votes
1answer
245 views

Default behaviour of Hash[expr] and hashing in different versions of Mathematica

In different versions of Mathematica, Wolfram silently changed the behaviour of Hash when the algorithm is not specified explicitly ...
10
votes
0answers
186 views

More Ticks::ticks errors in AbsoluteOptions in v10

Bug introduced in 7.0 or earlier and persisting through 10.1 or later While the specific bug affecting Plot described in AbsoluteOptions prints error messages in ...
6
votes
1answer
181 views

Linux: Mathematica crashes when clicking documentation links very fast

Can someone confirm the following behavior: Open a new Mathematica and go to the documentation. Navigate to any reference page (I used RegionPlot) and click ...
26
votes
2answers
1k views

Save as pdf broken in version 10.0.2?

Fixed in 10.1 It looks like the save as pdf is broken after I update to version 10.0.2. The labels in the plot become a mess. Are there ways to fix it? The ...
12
votes
1answer
308 views

10.0.2 mapping Association to Dataset warning

In 10.0.2 ExampleData[{"Dataset", "Titanic"}][All, <| "gender" -> #sex|> &] Outputs the expected result, but also throws: MapAt::partw: Part ...
3
votes
2answers
90 views

BarLegend using Function that uses Blend

I'm sorry if this is a duplicate, but I don't even know how to look for it. I had this line of code that worked on a Notebook I wrote on Mathematica 9.0: ...
9
votes
1answer
248 views

Did 10.0.2 break some forms for named slots?

Bug introduced in 10.0.2 and fixed in 10.2.0 Since 10.0.2 some code that previously worked using named slots fail in very particular circumstances. Attchd screenshot shows the issue w/ a ...
7
votes
1answer
317 views

Missing tick in plot

Bug introduced in 10.0.1 and persisting through 10.2.0 Consider this ...
2
votes
1answer
43 views

VertexConnectivity and FindVertexCut disagree [duplicate]

I'm trying to use Mathematica to compute the minimal vertex cut for graphs. From what I understood, VertexConnectivity of a graph should correspond to the number of vertices in the minimal vertex cut. ...
12
votes
1answer
281 views

BUG: AssociationMap loses definition

Introduced in 10.0.0 and fixed in 10.1.0. I'm facing a strange behavior of AssociationMap. With a fresh Kernel session: ...
1
vote
0answers
38 views

Problem with dashed lines in Plot, ListPlot and ListLinePlot [duplicate]

(I'm new stackexchange so I hope i'm doing this correctly). I'm struggling with dashed lines in Plot, ListPlot or ...
2
votes
0answers
116 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 ...