For questions specific to Version 8 of Mathematica.

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6
votes
0answers
275 views

NullSpace[_, Method->“OneStepRowReduction”] is sometimes wrong; how can I work out when this happens?

Edit 2015: Has this been fixed yet? (This is on MMA 7.0.1.0 on OS X) I've just found a large matrix m for which NullSpace[m] ...
16
votes
2answers
969 views

How to compute the inverse CDF of HyperbolicDistribution properly?

Fixed in version 9. I want to compute the CDF and inverse CDF of the hyperbolic distribution: ...
6
votes
1answer
181 views

Bug in LengthWhile?

Bug introduced in 8.0.0 and fixed in 8.0.1 Is this a bug or my MMA went insane or I'm missing something? LengthWhile[Reverse@IntegerDigits[1000], # == 0 &] ...
2
votes
2answers
130 views

The proper way to write the input for a certain series

Mathematica tells the series below doesn't converge. I think it converges. What would the proper way to write things be as an input? ...
0
votes
0answers
29 views

FoldList[Union,…] version 8 vs version 9 [duplicate]

I have a list of matrices something like shown below A = {{{1,1,1,1,1},{2,2,2,2,2}},{{3,3,3,3,3},{4,4,4,4,4},{5,5,5,5,5}}} When I try to run the code ...
3
votes
1answer
498 views

Create a colorbar plot legend

I have the following list of parametric equations lst = {10*Cos[u]*Sin[v], 3*Sin[u]*Sin[v], 2*Cos[v]}; I define the following color function ...
29
votes
1answer
764 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 ...
1
vote
1answer
69 views

FrameTicks in BarChart

I am finding it a strange issue. I want to make a BarChart as ...
8
votes
0answers
198 views

Interpolation on an unstructured (mostly-structured) grid in 4D+

I frequently need to perform interpolations on an unstructured grid. Mostly, with the purpose of filling grid holes and then later continue with regular grid interpolations. Mathematica V9 and V10 ...
4
votes
1answer
138 views

A problem about CompilationTarget -> “C” [duplicate]

In my Windows 7 system, I installed two Mathematica versions (V8 and V9) In V8 Compile[ {{x}}, x^2 + Sin[x^2], CompilationTarget -> "C"] ...
2
votes
1answer
3k views

Does Mathematica v.8 (or will v.9) run on Windows 8 systems with ARM processors? (like the MS Surface Tablet)

Today I was reading that the Microsoft Surface RT is available for pre-order. (For the curious, click here.) I know the version of Widows 8 that runs on x86 processors should be compatible already ...
2
votes
2answers
159 views

Bug in ListVectorPlot?

Trying to evaluate the following expression kills my kernel (Mathematica 8.0.0.0): ...
1
vote
2answers
83 views

Add weighted edge to a graph in Mathematica 8

Is it possible to add an edge with a specific weight to a Mathematica Graph object? The function EdgeAdd has no option for the weights, nor the ...
0
votes
1answer
214 views

Mathematica crashes after some iterations

I wrote a Mathematica script, which calculates an integral value at a list of points and writes it to a file: ...
20
votes
3answers
954 views

Clipboard with transparency

After reading this question I have determined that Rasterize[Graphics[Circle[]], "Image", Background -> None] allows you to do ...
7
votes
2answers
335 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: ...
3
votes
1answer
115 views
3
votes
3answers
721 views

Adding plot legends in version 8

I use Mathematica to draw the displacement, velocity, and acceleration of one point in a graphic. ...
13
votes
1answer
314 views

Extra factors appear when evaluating Euler integrals

Note: this is fixed in version 9. When I perform the double integral in Mathematica, Integrate[(x (1 - x))^z (y (1 - y))^z, {x, 0, 1}, {y, 0, 1}] which ...
5
votes
1answer
200 views

Why does Arrow not work well with Scaled coordinates in 3D?

I am a little puzzled by the fact that if I try to use Arrow with Scaled coordinates in 3 dimensions the arrowheads are all over ...
6
votes
0answers
160 views

Issue with FindCurvePath

I have a problem with the function FindCurvePath. In some cases it crashes the Mathematica 9 Kernel. Here an example, where it crashes the kernel: ...
2
votes
1answer
121 views

Using EdgeList on a once empty Graph crashes the kernel

Note: this is fixed in version 9. Calling EdgeList on a non-empty graph which was previously empty causes the math kernel to crash. For example, ...
12
votes
1answer
186 views

NExpectation behaves oddly with EmpiricalDistribution

Note: this is fixed in version 9. My question concerns the usage of NExpectation and Expectation and why I see the behavior I ...
10
votes
2answers
212 views

How to Write into multiple files?

Note: this is fixed in version 9. I want to put expressions into multiple files simultaneously, with the following code: ...
15
votes
1answer
972 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 ...
7
votes
1answer
104 views

Bug in GeneratingFunction?

According to the documentation GeneratingFunction[a[n],n,x]==Sum[a[n]x^n,{n,0,Infinity}] However, for $a_n=1/(n+2)$ I obtain ...
3
votes
1answer
174 views

Exporting large png results in completely black image

When trying to export an Image as PNG the resulting file is a completely black image. This happens only for certain images I have not been able to determine exactly ...
4
votes
1answer
3k views

Does Mathematica 8 work on Windows 8?

I just saw that Windows 8 RTM has showed up on Technet, and I've been wondering if I should upgrade my main machine. I've been trying to determine the compatibility of various app with Windows 8 and ...
3
votes
0answers
38 views

up arrow works in math version 9, fails in math version 8 ^[[A [duplicate]

I have strange up-arrow behavior on command line Mathematica 8 versus Mathematica 9. Version 9 gives me history, where version 8 fails with escape codes. Any way to make them both work on the same ...
6
votes
1answer
74 views

Infix strange behaviour

Maybe this is a bug or maybe Infix acts differently than the other functions. The fact is that both: TreeForm[Infix[f[x, a]]] and ...
15
votes
3answers
275 views

What is the most convenient way to change options for Graph[] objects?

What is the most convenient way to change options such as VertexLabels in existing Graph objects? (Version 7 users note: ...
0
votes
1answer
203 views

Run FileSystem Remotely and Front End/Kernel Locally

Is there a way to run both the front end(& kernel) locally while the having Mathematica's filesystem(inode's at minimum) reference another os's filesystem? For example currently I run ...
5
votes
2answers
432 views

Is Mathematica 8 compatible with Mac OS X 10.9?

Does anyone know if Mathematica 8 works with OS X 10.9?
0
votes
0answers
28 views

DialogInput inside ButtonBar freezes Mathematica [duplicate]

In Mathematica 8, if I press a button on a ButtonBar which contains a DialogInput Mathematica freezes. Is this reproducible and ...
3
votes
1answer
180 views

FullSimplify yielding different results in mathematica 8 and 9

I have been experiencing some problems running a certain mathematica file in version 9. I've tracked the problem to a particular sum that I perform. Running the same code in version 8 and 9 I get two ...
1
vote
0answers
601 views

Problem enabling PlotLegends in Mathematica 8.0

I am trying to make a legend for a simple plot in Mathematica 8, but does not seem to recognise the command PlotLegends. I declared beforehand ...
4
votes
1answer
205 views

Can't simplify Abs[a*Cos[x]]^2

Why doesn't FullSimplify[ Abs[a*Cos[x]]^2, Assumptions -> {{a, x} ∈ Reals}] simplify to (a*Cos[x])^2 but this query ...
0
votes
0answers
45 views

Running PlotLegends in Mathematica 8 [duplicate]

I will like to get a density plot (in Mathematica 8) as in: Make legend same height as plot. However, anytime I run ...
3
votes
0answers
216 views

Method Shrinkwrap Messes up editting Graphics

If you try resizing or moving the Inset in the following interface, the Graphics becomes incredibly jerky and borderline ...
4
votes
1answer
457 views

Using DistributionFitTest on custom distributions in Mathematica 8

I originally posted this question on Stack Overflow, but I didn't get any answers, and I'm hoping to have better luck here. I'm trying to compute the goodness-of-fit of a bi-modal Gaussian ...
8
votes
2answers
144 views

Alternative to NotebookLocate or NotebookFind

In Mathematica 8.0 and older, there are two ways to select cells based on cell tags. NotebookLocate["CellTag"]; NotebookGet[EvaluationNotebook[]] and ...
1
vote
0answers
221 views

Positive integrand giving negative answer

I'm integrating a positive function f(t) times sin(t) from 0 to pi/5 and get -38. Actually f is slightly negative for a short time (smallest value ~ -0.0005), but far from enough to explain this. ...
6
votes
3answers
608 views

ListPolarPlot not showing full plot range even with PlotRange -> All

I have a list of data dpdOt (given below) with associated angular coordinates thetaplot, which when plotted using ...
3
votes
2answers
518 views

Matrices and polynomials: MMA 8 vs. 9?

I want a function to take a polynomial from a list, plug a certain matrix T into that polynomial, and return the answer as another matrix. My program uses the applyPoly function suggested by a user in ...
1
vote
1answer
132 views

Techniques Modifying Cells M8.0

What techniques are there for modifying/organizing/selecting/deleting cells? I understand Mathematica 9.0 has a Cells function but what techniques exist in Mathematica 8.0? The documentation for ...
4
votes
1answer
376 views

A Graphics`Mesh`ConvexHull[] peculiarity

I have been unable to explain the behavior of Graphics`Mesh`ConvexHull[] on the following (highly simplified) example: ...
2
votes
0answers
78 views

Must Run Cell Twice to Display Values

What is going on here? Print[InputField[]] CellPrint[TextCell["my\"text", "Text", ShowStringCharacters -> True]] If I insert the above code into a blank ...
13
votes
2answers
527 views

Problem importing URL with Greek characters

I'm considering buying a car. So I thought why not make a web-crawler in Mathematica to pile-up car data? Brilliant idea. Then I found this Greek website, gocar.gr, which just so happens to have all ...