Questions tagged [version-7]

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

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56 views

how to solve the integral diffenertial equation with convolution? [closed]

several days ago i have put up the question as this and links are as this enter link description here and i have simplify the question and questions are as this my question is as this and i want ...
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0answers
129 views

How to solve ode with convolution?

my question is as this and i want to get the solution of this ode x(t) $ ({M_{33}}{\rm{ + }}{{\rm{m}}_{33}})x''(t) + \int\limits_{ - \infty }^t {x'(tau){K_{33}}(t -...
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1answer
61 views

How to get the analytical solution or numerical solution of the double integral

i just want to calculate this double integral but can't get the analytical solution,so it there a way to get the analytical solution or numerical solution of the double integral? codes are as this <...
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1answer
43 views

mathematica stop working after running some .nb file and close or save the file

Bug fixed in 8.0.4 for Chinese edition only, generally fixed in or before 11.3. I'm using version 7 on Windows. After I running one .nb file and just want to ...
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1answer
89 views

Repeated convergence test failure and why?

i have assigned all the values and the ODE assigned is as this ...
4
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3answers
193 views

NDSolve will try solving the system as differential-algebraic equations but it didn't get the solution

Please help me deal with this kind of question about ODEs. My codes are as follows ...
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0answers
83 views

How can I introduce vertex labels into a graph

How can I introduce vertex labels into a graph in Mathematica 7 with Combinatorica? I create graphs with Graph or GraphPlot, ...
7
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2answers
876 views

Graphene bilayer rotation

How can we design the rotational picture of bilayer graphene using Mathematica 7.0 like in the figure? This gives Moire pattern
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0answers
24 views

Is it possible to create CDF document with Mathematica 7?

As far as I can understand from the exemplary videos here and here the minimal version of Mathematica that has the inbuilt possibility for creating CDF documents is Mathematica 8. But is there some a ...
11
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4answers
289 views

How to plot $x^2$ over $-5<x<-1\cup1<x<5$

Is it possible to plot a function over a interval with a gap in the middle; e.g., $f(x)=x^2$ over $-5<x<-1\cup1<x<5$? I am using Mathematica 7 and most of the options in the answers don't ...
4
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1answer
117 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
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1answer
220 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,...
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0answers
92 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 ...
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1answer
133 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 ...
3
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1answer
377 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
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2answers
767 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
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2answers
122 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 ...
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0answers
282 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 ...
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1answer
120 views

Multiple stopping constraints in NDSolve

I need to numerically solve several differential equations, with several constraints, like this : ...
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0answers
116 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 : ...
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2answers
120 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 : ...
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1answer
184 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
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1answer
206 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 ...
2
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2answers
1k 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 ...
1
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1answer
131 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 : ...
10
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1answer
837 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 ...
2
votes
1answer
216 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, ...
2
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3answers
1k 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: ...
2
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1answer
312 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 ...
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0answers
276 views

Distance between ticks and axes [duplicate]

I've created a plot using the following code: ...
2
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1answer
1k 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: ...
4
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1answer
411 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 use ...
1
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1answer
533 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: ...
1
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2answers
457 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
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1answer
82 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 ...
2
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1answer
430 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 ...
3
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3answers
102 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
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0answers
121 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" ...
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0answers
55 views

Number precision in a list [duplicate]

I have list with elements: ...
3
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3answers
746 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
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1answer
141 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 <...
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1answer
82 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
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3answers
707 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
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1answer
1k 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 ...
4
votes
1answer
290 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 ...
2
votes
1answer
4k 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] ...
6
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1answer
983 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 ...
0
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1answer
88 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] ...
3
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1answer
392 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
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1answer
115 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" ...