Version-specific issues for Mathematica 7 (other than bugs).

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4
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1answer
1k views

How to take the derivative w.r.t. an arbitrary function?

EDIT: The answer posted by @Jens works for built-in functions only. However I'm starting to wonder if this is related to my Mathematica install somehow. I have version 7. Here is an example in the ...
2
votes
1answer
142 views

Alt+Gr issue with Mathematica 7 on linux

I have the same issue as described in https://matteochinazzi.wordpress.com/2010/04/12/mathematica-alt-gr-issue-under-linux/ So basically whenever I use AltGr to write [ or ] in Mathematica, it ...
4
votes
1answer
94 views

Small output glitch with Histogram

I'm experiencing a small formating glitch with an histogram. I want to define an histogram with a square frame, with precise vertical ticks from 0 to 10. But I'm still getting a larger range, and I ...
1
vote
1answer
159 views

Problem with convergence of limiting value in Manipulate

I created a nice Manipulate box of the magnetic field outside and inside a spherical shell placed in an homogeneous magnetic field. The code is working great, but it has a problem at a limiting value,...
1
vote
1answer
79 views

Random phases at each run in a wave superposition [closed]

I need to define a function which generates a random real number between 0 and $2\pi$, as a random phase constant for a wave superposition. The output should be different each time I re-run the code, ...
0
votes
1answer
56 views

Checkbox in manipulate not properly working

This question is related to another question of mine : How can I add a checkbox to a Manipulate expression?, but I'm still unable to make the checkbox to work properly. Here's a MWE code, from my ...
0
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0answers
42 views

Is it possible to make a standalone OS X app from manipulate?

I'm wondering if it's possible to make a standalone app from a manipulate box. I mean a small app that do exactly what the manipulate box is doing in Mathematica, but without Mathematica. In other ...
3
votes
1answer
69 views

How to align text to left and output to right, in manipulate?

I need to show a layer of information on a 3D graphics, inside a manipulate box. Currently, all the code is working great, except that the text should be aligned to the left, while the output numbers ...
1
vote
2answers
85 views

How to add text with output on a 3D manipulate

I need to add a string of text with some output data at the bottom-center of a manipulate output. The manipulate output itself is 3D. Here's a MWE to work with : ...
2
votes
2answers
61 views

How to mix symbols and text for labels in manipulate? [closed]

I'm creating a big manipulate box with several sliders, and each slider must have a small explication text (units, for example) after a mathematical symbol. As a simple example, here's the code I'm ...
0
votes
0answers
97 views

Slow and laggy animation of an electromagnetic wave

I made a manipulate code of an electromagnetic plane wave which works relatively well, but is very slow and laggy for what it does (showing just a bunch of rotating or oscillating arrows). What is ...
0
votes
1answer
58 views

Multiple stopping constraints in NDSolve

I need to numerically solve several differential equations, with several constraints, like this : ...
0
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0answers
64 views

How to define an exclusion zone for NDSolve

I need to numerically integrate a differential equation and define two exclusion zones to stop the integration. The Mathematica code looks like this : ...
1
vote
2answers
73 views

Manipulate slider freeze, and empty value in box

Here's a MWE code to show two problems I'm experiencing with the sliders and their value box, under Manipulate : ...
0
votes
1answer
67 views

NumberForm pesky warning from Manipulate

I'm using the NumberForm command inside a Manipulate environment, and in some special cases Mathematica gives a pesky and mostly useless warning message : NumberForm::sigz: In addition to the ...
1
vote
1answer
119 views

Out of range red glow on inter-dependant sliders in manipulate

In manipulate, I need to define two sliders : one basic slider, and a second one for which the end value depends on the current value selected on the first slider. How can I achieve this in ...
1
vote
2answers
104 views

How can I add a checkbox to a Manipulate expression?

I'm looking for a simple example about how to add a simple On-Off switch in a manipulate function. More specifically, I defined a curve with two parameters. One is a continuous parameter that is ...
0
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1answer
81 views

How to colorize curves intersection in a manipulate function

I need to show the intersection area of two curves, using the manipulate function in Mathematica. Here's a fully working example, and a preview below it : ...
8
votes
1answer
295 views

How to add a fading trail effect in Animate?

I would like to add a smooth fading effect to the end of a curve, while it is animated. Here's a minimal working example which shows a particle moving on a circle (the circle is drawn while the ...
1
vote
3answers
362 views

Random non-overlapping disks in a square

I've found a nice code snippet by @belisarius from this question, that I'll reproduce here for reference: ...
0
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0answers
251 views

Distance between ticks and axes [duplicate]

I've created a plot using the following code: ...
6
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0answers
303 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] ...
12
votes
3answers
663 views

Why does Hash return different values in Version 7?

This function does not work correctly for me. The generated Gravatars do not match the ones actually produced by using the corresponding address. The problem was traced to differing output from the <...
2
votes
1answer
492 views

Place legend without border above the plot

I use Mathematica 7.0 and as far as I know, there is not method PlotLegends, only PlotLegend. I want to set my legend - without background, shadow and frame - above my plot, as in the example belowe: ...
1
vote
1answer
190 views

Use Compile to speed up evaluation

I have read, that using Compile command can speed up evaluations in mathematica. I have a mathematical expression, which I evaluate using following command: ...
3
votes
1answer
203 views

Plot: How set markers in plot in front of axes

I draw a plot using ListPlot. But I noticed that PlotMarkers are 'covered' by the axes; see example below: I was trying to ...
1
vote
2answers
112 views

How to fix the order in which text appears in an axis label (V7) [duplicate]

One of the AxesLabel is "$:\text{log}|\Phi8b(u)|\color{Red}{\text{Red}}$". Question: How to make it like: "$\color{Red}{\text{Red}}:\text{log}|\Phi8b(u)|$"?. My Mathematica commads: ...
2
votes
1answer
71 views

Error with comments inside and expression

I found this strange parsing error with comments inside of an expression in Version 7. And example is {{1, x}, {1, y} (* {1, z (= 5+6)} *)}; It occurs depending ...
4
votes
1answer
206 views

Exported animated gif with matrices will not work?

I want to export a list of matrices as a gif so that they will appear one after another 2 seconds apart. I've tried the following but when I open it up it only does the first two matrices and I have ...
5
votes
1answer
411 views

Sorting an Array with words in different languages

Array consists of words of different languages. I need to sort elements in reverse alphabetical order and make a list of elements, which consist of english letters. Example of array which consist of ...
1
vote
1answer
178 views

Warning and Errors during Compile

I defined a compiled function cf = Compile[{{x, _Integer}, {n, _Integer}}, z = (n^x); Binomial[n, #]* StirlingS2[x, #] *(#!)/z & /@ Range[x]]; and I ...
2
votes
3answers
89 views

Reduction of repetitive calculations in Table

If I generate two tables inside a function which are function[n_, x_, y_]:=( table1 = Table[i* x/n^x, {i,1,n}]; table2 = Table[i* y/n^y, {i,1,n}]; ) where <...
2
votes
0answers
88 views

RDPStruct.exe: what is it and why are there so many?

I have an old (v7) webMathematica system running and it seems to generate a lot of RDPStruct.exe processes. First, what does this "Converter" do? GIF.exe and JPEG.exe are obvious, but "RDPStruct" ...
1
vote
2answers
209 views

Error changing edge thickness in a GraphPlot

I'm having some problems with the Mathematica graphics inspector. I want to make a graph with the following code: ...
2
votes
2answers
226 views

How can I style a TabView?

I have been trying to style a TabView like in the examples on the Wolfram CDF site, where they have custom sizes and backgrounds with images or gradients, but I am ...
3
votes
3answers
443 views

Colorize a 3D distribution of points according to density

Suppose we have some random 3D distribution of points. I'll use the spherical ball defined below as an example and a starting point for the discussion here : ...
3
votes
1answer
108 views

Bug with LinearProgramming on Integers?

With Mathematica 7: LinearProgramming[{1, 1}, {{0, 0}, {1, 1}}, {1, 1}, Automatic, Integers] gives wrong result {0,1}. But <...
0
votes
1answer
67 views

Specifying Table/grid dimensions in version 7

The result of my calculations is quite large list (nested list to be precise). I would like to improve its visualization, to make it more legible, by setting the number of columns to let's say 5. ...
7
votes
3answers
597 views

How to randomly erode a 3D distribution of points with Mma 7.0?

Suppose we have a 3D distribution of points, like the spherical ball example below : ...
-4
votes
1answer
686 views

How to generate this fractal-like 3D distribution of points in Mma 7.0?

I would like to produce some 3D distributions of points using Mathematica 7.0, that look like the picture below : How could I do that ? What are your suggestions ? What Mma 7 codes could do a ...
1
vote
1answer
1k views

ListPlot doesn't shows all points [closed]

I have a table: p1 = Table[(Binomial[2000, k]*StirlingS2[1386, k]*k!)/(2000^1386), {k, 1, 1386, 1}]; I used ListPlot[p1] ...
0
votes
1answer
47 views

Showing result of derivative and other functions [closed]

I have a problem with my Mathematica 7.0 When I write: Derivative[x^2, x] Mathematica returns as result : Derivative[x^2, x] ...
2
votes
1answer
266 views

ListPlot - plotting values with different range

I have three tables: L, S and U. In first table I have values from range (0,1), in second ...
0
votes
1answer
106 views

Missing some packages?

I am trying to use a program written by someone else. When I run the program, I am supposed to get a number as a result, however, what I got is some complicated result with "InterpolatingFunction" ...
4
votes
0answers
87 views

Error with String patterns producing Removed[“$$Failure”]

While working on How to capitalize the first letter of each word in a string and trying to understand why certain characters were not considered letters I tried this: ...
4
votes
1answer
109 views

Is it possible to enable syntax highlighting for \[Function]?

This is a bit of a long shot but I am wondering if it is possible to enable syntax highlighting in a function defined with \[Function] without resorting to anything ...
4
votes
1answer
358 views

Sporadic bug in Mathematica 7.01.0 MatrixPower and/or Eigensystem functions on floating-point symmetric matrices with repeated eigenvalues

Note: From the comments submitted below by other StackExchange users it appears that this apparent bug was fixed sometime after version 7.0.1. I asked a vague variant of this question a few days ago, ...
13
votes
6answers
716 views

Sort+Union on a list

Probably this is too trivial question for this forum but for some reason I am not getting it on my Mathematica 7 so far. I have a list ...
-4
votes
1answer
112 views

Can I create a CDF from Mathematica 7?

I am almost sure I remember seeing an online tool on the Wolframs website for creating CDF's for Mathematica users with version 7. Am I right? And if so, where can I find it?