8
votes
1answer
484 views

Exporting plots with Cyrillic text elements to pdf

I'm trying to export a plot with some added notes which happen to be in Russian. Using Mathematica 8.04 and WinXP I evaluate ...
41
votes
1answer
2k views

Implementing a first person view of 3D objects in a scene

I've created the following scene with a Chinese-style building surrounded by trees, and a horse and a rabbit grazing on the grass in Mathematica (don't ask me why there's a bust of Beethoven in ...
9
votes
3answers
583 views

Generating an autoregressive time series

Find $X_t = c_1 X_{t-1} + \dots + c_n X_{t-n} + n_t$ for given $c_i$, initial conditions $(X_1, \dots, X_n)$, and distribution for i.i.d. $n_t$. I would like to know if there is a more efficient or ...
21
votes
6answers
563 views

Partition string into chunks

This seems like it should be trivial, but how do I partition a string into length n substrings? I can of course write something like ...
11
votes
2answers
216 views

Pasting “rectangles” of text side-by-side

In Emacs/Xemacs, there is a rectangle feature, such that you can delete, copy, etc., "rectangles" of text. Now suppose I have two text files, each containing one column of numbers. Is it possible to ...
3
votes
2answers
219 views

Converting expressions to InputForm strings without spaces after commas

One of the little utility packages I use needs to convert Mathematica expressions to InputForm text that is interpolated into a custom file format which is then ...
0
votes
1answer
732 views

Plot is not showing [closed]

I've used Wolfram Mathematica 8 Trial version for two days. Any pointers are appreciated. Thanks in advance! EDIT: There are supposed to be 4 plots, but only 3 are showing. Everything works except ...
4
votes
2answers
696 views

How to Solve this ODE with Mixed Boundary condition

I have an ODE equation which is sort of y''[x] + 2 y'[x]/x + .0001 (y[x])^3 ==0 subject to the boundary conditions ...
7
votes
1answer
360 views

Limit not evaluating

Why is the input Limit[IntegerPart[Sin[x]/x], x -> 0] not being evaluated?
4
votes
2answers
1k views

Is it possible to compute trapezoidal rule numerical integration?

Is it possible to compute trapezoidal rule numerical integration? I know that Mathematica has Interpolation, and that a list of points can be interpolated and then ...
7
votes
1answer
268 views

Stopping Evaluation of Manipulate after it goes through once

I do quite a bit of textual analysis with Mathematica, and am currently making some Manipulate objects to walk people through key terms in the database. One issue ...
16
votes
1answer
397 views

What is the meaning of the last argument passed to the ColorFunction of a ParametricPlot3D?

According to the docs, the meaning of the arguments passed to ParametricPlot3D is $x, y, z, u, v$. This is 5 arguments: the Cartesian coordinates and the two ...
6
votes
0answers
129 views

How to create a floating image with no window background [duplicate]

Possible Duplicate: What is the most effective way to setup a Notebook with transparent background but solid contents? When MMA 8 starts, a floating image of spikey is shown. As you can see ...
4
votes
1answer
231 views

Removing edge weights from a Graph

How can I remove EdgeWeights from a Graph without affecting any other properties of the graph? Let's construct a graph with ...
2
votes
2answers
448 views

Scoping inside of Module and Manipulate

This is driving me nuts: I'm trying to control the parameters for a relatively large system of ODEs using Manipulate. ...
7
votes
3answers
1k views

how to simplify symbolic integration

The following is the code: ...
2
votes
3answers
706 views

Finding roots of nontrivial equation

I am trying to solve the following nontrivial equation: ...
2
votes
2answers
412 views

MathLink and CDF

So far I have read that some things are not supported in CDFs. Istvan-zachar mentioned very useful things in his post. Unfortunately he mentioned that MathLink operations, including J/Link and ...
8
votes
1answer
548 views

Start Mathematica without the menu bar?

Is there any way to start Mathematica without the main menu bar? To be precise: Sometimes I make standalone mini-applications that I would like to just have in their own little windows without the ...
4
votes
1answer
195 views

Assumptions seem not to be considered

In the following a,b is a probability distribution, i.e. a+b==1 with ...
5
votes
3answers
619 views

Random Geometric Graphs

I'm trying to implement an application which uses random geometric graphs in Mathematica, but it seems Mathematica lacks the functionality. I need the following functionalities: Generate a set of ...
6
votes
2answers
645 views

Exporting images as .avi

Here's a list of images: images = Table[ExampleData[i], {i, ExampleData["TestImage"]}]; And according to the reference "Export exports a list of graphics, ...
8
votes
1answer
1k views

Using Mathlink with the cernlib FORTRAN package MINUIT

I could successfully use Mathlink to call a simple fortran subroutine. However, when I went to a realistic problem, I failed. To be specific, I want to fit a set of data with some function using the ...
8
votes
2answers
285 views

Keeping Quotation Marks in Output

I am running into the following seemingly simple problem. I have this code: testphrase="i love you"; input=ToLowerCase[StringSplit[testphrase, Whitespace]] It ...
3
votes
1answer
160 views

Frame or EdgeForm disappearing out of PlotRange

I am trying to obtain a thin frame around the bars in this chart but it's proving rather tricky. Can anyone suggest a solution? ...
7
votes
2answers
382 views
10
votes
2answers
2k views

Performing a chi-square goodness of fit test

How would I perform a chi-square goodness of fit test? I have tried the following, where my data consists of the observed values whilst the data pair contains the correct values. Then I use the ...
3
votes
2answers
357 views

Question about making TabView remember what tab to open

Background: Consider the following ( for the purpose of illustrating this question ) simplified, but working snippet of code. ...
38
votes
4answers
7k views

How to find all the local minima/maxima in a range

I want to find : all local maxima in range all local minima in range From those points I can interpolate and combine functions upper and lower boundary. What I am really interested in, is the ...
2
votes
3answers
531 views

Some questions about random numbers

How can I get non-repeating random numbers from Mathematica 8? How can I know which distribution the numbers I get are? Can I choose the distribution I want together with the non-repeating random ...
6
votes
1answer
498 views

Cropping a plot via a command

I have a plot with some whitespace I'd like to get rid of. Ideally, I'd like to use a command like "ImageCrop", but for non-raster graphics (ImageCrop rasterizes the graphic). The Mathematica ...
19
votes
3answers
923 views

How to load a package without naming conflicts?

This question applies to any package, but I encountered this problem while working with graphs. There are symbols in the Combinatorica package (such as ...
3
votes
2answers
91 views

TextAlignment->Center in a notebook with WindowSize->All

I'm creating a dialog with CreateDialog. I want one of its cells to have its text centered. By default (and I like that default), the notebook created has ...
5
votes
1answer
115 views

MUnit test debug breakpoints in Workbench not working

When I create a breakpoint in Workbench 2 for an MUnit test, and run a debug build, the breakpoints are not breaking execution. The MUnit output is updated like a normal run without breakpoints. Why ...
6
votes
2answers
388 views

Starting NDSolve from intermediate time step?

I always wondered if I could start NDSolve from an intermediate time step. What I mean is, in the code sample below, if I were to run my solution from tmin=0 to ...
10
votes
2answers
235 views

Encoding format used by GraphicsData?

I am trying to extract some graphics stored in PICT format from a Mathematica notebook, using a platform that doesn't support PICT. If I look at the .nb file in a ...
4
votes
2answers
132 views

Manipulate and ExclusionsStyle

How can I change ExclusionsStyle for a plot inside Manipulate? Here's a sample that (though it shouldn't) seems to produce ...
2
votes
1answer
199 views

Issue with Grid command

Dear all, I've been trying to set prepare a grid with different charts for comparisons. The issue I have is that the first row of the grid has the legend distorted. The issue does not occur for ...
10
votes
2answers
2k views

Changing the speed of exported AVI videos

I am exporting an animation created using Manipulate in the .avi format. However the video runs very fast (I am putting it in ...
11
votes
1answer
277 views

Check does not interrupt evaluation of the expression when a Message is emitted

On the surface, Check looks like a good method to use when you need to abort the evaluation of an expression whenever a Message ...
11
votes
7answers
315 views

Question about evaluation control

I want to make a function that takes a function as a parameter and prints an integral with the function inside. I've tried this: ...
2
votes
2answers
113 views

Solving an equation and finding a couple of results given that they are integer

My problem is to find all solutions to an equation with 2 variables between two values that define the range of my search. e.g., $(x+y-y²)/(1-y-x²)=0$ with solutions ${x,y} \in \mathbb{Z}$.
10
votes
1answer
409 views

Mathematica Source-Code Control for CDF files in multi-user scenario

Q: I'm putting together a strategy on how its best to maintain cdf documents with multiple users in a source code repository. Ideally I wish for users to create (unit tested) cdf's with data and ...
5
votes
2answers
340 views

How to save data to a variable by clicking a button, using Widget Panel

In Mathematica I am trying to implement algorithm, for which I would like to have user friendly interface, I have managed to create Panel using Widgets, but when I am trying to provide the value of ...
22
votes
2answers
1k views

Populating and storing a very large array in Mathematica

I am using Mathematica 8 to generate a very large multidimensional array of floating-point numbers and then store it in a file. Typical array sizes are 10000 x 50 x 15 x 40, resulting in a 3-4 GB ...
9
votes
3answers
371 views

How to use Locators on a graphic in a tabview

Background: I want to split graphics in a Manipulate in several parts in a tabview control. But the tabview somehow interferes with the locators as in the following simplified example: ...
2
votes
1answer
216 views

Is it possible to use styled (e.g., colored) text in PlotLabel?

Sometimes, I want to provide a key or legend for my Plot or ListPlot without using the ...
14
votes
3answers
773 views

Constructing a symbolic Hermitian matrix

I need to construct a symbolic Hermitian matrix like m = { { n, a, b, b}, {Conjugate[a], n, b, b}, ... } but I am not able to set ...
14
votes
4answers
458 views

How can I turn off SingleLetterItalics in PlotLabels, etc, when the Options Inspector won't do it?

One of the requirements set for the graphing project I am working on is that plot and axis unit labels sometimes need to include superscripts. Here is an approximately minimal example (I have some ...
8
votes
2answers
525 views

Creating Marker (Tags) on Top of Plots

I am wondering and tried to plot a graph having labeling specified on top of the graphic. I kind of know a brute force method to accomplish it, but the results will not even look close to clean ...

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