Questions tagged [version-7]
Version-specific issues for Mathematica 7 (other than bugs).
95
questions
2
votes
2
answers
269
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How to define the density of random 3D points and plot it?
The following code draws a random distribution of particles in 3D. The Manipulate box allows to change a few parameters (number of particles, size of clusters, ...). I would like to define the local ...
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1
vote
2
answers
126
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How can I improve this code?
The code below is working well, but it's very slow in the Manipulate box. I know that the Do and AppendTo parts aren't very ...
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1
vote
0
answers
73
views
Is there "absolute" point size for Graphics3D?
I would like to get points size that vary when the viewer is zooming in/out through the 3D graphic. The point size I want should be defined as "absolute", relative to the coordinates used ...
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0
votes
2
answers
74
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How to add random point size to this distribution of 3d points?
The code below creates a random distribution of points in 3D. Currently, the points have a random size, and the size is the same for all points. I need the points to get individually a random size, ...
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5
votes
1
answer
206
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How to get fuzzy points in a 3D view?
I would like to produce fuzzy random points (sprites like) in a 3D view. Applying a Blur command doesn't do the trick since the view is then frozen and we couldn't rotate the view anymore, and I don'...
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1
vote
1
answer
155
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How to introduce random correlations in a 3D uniform distribution of points?
I would like to build a simple visualization of the distribution of galaxies on a large scale model of the universe. Currently, my galaxies are represented as uniform random black dots in a 3D cube, ...
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0
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0
answers
51
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What is wrong with FrameTicks in this small code?
I'm having a problem with FrameTicks not working with this MWE:
...
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2
votes
0
answers
93
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How to define smooth random initial conditions consistent with boundary conditions for this 1+2D PDE?
I wrote a fully working code to numerically solve a non-linear variation of the classic 1+2D waves equation. Here's a stripped down version of it (classic waves equation), with static initial ...
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1
vote
2
answers
104
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How to simplify this sum of random waves?
Is there a way to simplify the random functions and their calls, in the code below?
...
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2
votes
1
answer
152
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How to make this moving surface a continuous and derivable function?
I'm having troubles in defining a function of three variables: $t$, $x$, $y$, from a moving bumpy surface that should be derivable relative to its three variables. Here's the animated surface code, ...
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1
vote
1
answer
111
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Randomly oscillating surface is not working well
I'm trying to built some random moving surface from a plane perturbed with random oscillators, and my current code isn't doing what I need yet, as seen from the ...
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2
votes
1
answer
80
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How to insert variable height in this random bumps function?
I'm trying to insert a "time" variable that control the height of the random smooth bumps, but I'm yet unable to do it right, as shown with the code below:
...
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3
votes
1
answer
158
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How to define a smooth function of random bumps in a plane?
I would like to define a simple function that gives random smooth bumps in a plane, a bit like the clumsy picture below, but it should be continuous:
...
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1
vote
1
answer
303
views
Boundary conditions at infinity for 1+2D wave equation in Mathematica 7
To solve a waves equation, I need to define some boundary conditions. The wave is propagating on an infinite plane, and it's not a membrane fixed on some fixed support. I'm have difficulties in ...
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4
votes
3
answers
343
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How can I add a few specific mesh (altitude-like level) curves to a plot?
I'm plotting the numerical solution of a differential equations, using the altitude-like level curves as a mesh. It's fine, but I would like to add three specific altitude levels as thick red, green ...
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1
vote
0
answers
73
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How to numerically solve this partial differential equation and plot the output? [duplicate]
Using Mathematica, I would like to numerically solve the following partial derivatives equation :
$$\tag{1}
\frac{\partial^2 \Phi}{\partial T^2} - \frac{\partial^2 \Phi}{\partial X^2}- \frac{\...
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4
votes
3
answers
241
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How to draw borders around tiles of the same color?
I'm having difficulties with a project to show random tiles with a few random colors. Here's the code that I need to modify:
...
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4
votes
3
answers
441
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How to draw random colorfull domains in a plane?
I'm trying to produce some graphics like the one shown below, with a few adjustable parameters to change the number and size of cells. The cells positions, sizes and colors should all be random (size ...
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1
vote
1
answer
204
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How to add noise to these random straight lines in 3D?
Here's a code that draws a pack of random straight lines in 3D:
...
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6
votes
2
answers
329
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How to generate randomly curved and twisted strings in 3D?
Here's a code that draws a set of random straight lines in 3D:
...
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1
vote
0
answers
217
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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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votes
1
answer
212
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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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0
votes
1
answer
232
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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2
votes
1
answer
1k
views
Repeated convergence test failure and why?
i have assigned all the values and the ODE assigned is as this
...
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0
votes
0
answers
90
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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, ...
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7
votes
2
answers
1k
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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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0
answers
26
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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 ...
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11
votes
4
answers
338
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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 ...
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4
votes
1
answer
130
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 ...
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1
vote
1
answer
283
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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2
votes
0
answers
161
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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1
vote
1
answer
219
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 ...
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3
votes
1
answer
582
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 ...
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1
vote
2
answers
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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 :
...
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2
votes
2
answers
187
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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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0
votes
0
answers
353
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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1
vote
1
answer
173
views
Multiple stopping constraints in NDSolve
I need to numerically solve several differential equations, with several constraints, like this :
...
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0
votes
0
answers
171
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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1
vote
2
answers
166
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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0
votes
1
answer
241
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 ...
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1
vote
1
answer
275
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 ...
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2
votes
2
answers
2k
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 ...
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1
vote
1
answer
169
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 :
...
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11
votes
1
answer
1k
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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 ...
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2
votes
1
answer
266
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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, ...
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3
votes
3
answers
2k
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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:
...
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2
votes
1
answer
407
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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0
answers
287
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2
votes
1
answer
1k
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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:
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4
votes
1
answer
639
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 ...
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