1
vote
2answers
210 views
Operations on sets of sets [duplicate]
Possible Duplicate:
How can I remove B -> A from a list if A -> B is in the list?
Delete duplicate elements from list
Pattern matching deletion of list items
How do I delete the ...
5
votes
3answers
462 views
Why won't Mathematica Solve a set of two equations for one variable?
For example, if I try to Solve this set of equations
Solve[y == 3 x + 5 && y == -x + 7, {x, y}]
Mathematica gives the right values for ...
0
votes
0answers
244 views
Unexpected result from contour plot - where is the color gradient?
When I plot a contour plot of my (in)famous code :P I get some unexpected results that I don't quite understand.
My code (the one that has ...
11
votes
5answers
427 views
How to texturize a Disk/Circle/Rectangle?
The documentation for Texture states that "other filled objects" can be texturized:
Texture[obj] is a graphics directive ...
12
votes
4answers
305 views
How do you decompose a polynomial matrix into its matrix coefficients?
Let's say I have a matrix, $\mathbf{M}$, that is polynomially dependent on a single variable, such as
M = {{15 + a^2, a + 5 a^2}, {a - 5 a^2, 2}}
and I want to ...
10
votes
2answers
152 views
Avoiding MainEvaluate in a CompiledFunction to fetch “global” variables
I'm trying to write a simulation using Mathematica 8.0. Since I will most likely be doing the same operation over and over again, I'm trying to Compile whatever I ...
6
votes
5answers
249 views
Computing the equivalence classes of the symmetric transitive closure of a relation
I have a list of pairs, for example:
...
7
votes
1answer
133 views
Inlining calculations in a notebook
Context
In $\LaTeX$, I can write something like:
Thus, we have $x = \sqrt{2}$, ...
the $ ... $, as opposed to $$ ... $$, inline the LaTeX symbols.
Now, with ...
0
votes
0answers
126 views
Importing a Matlab-generated .SET file with embedded .BDF [closed]
I asked this Q on stackoverflow (and also a couple of colleagues) but still no answer
http://stackoverflow.com/questions/11142962/extracting-bdf-from-matlab-generated-set-file
Anyone know how to ...
7
votes
1answer
329 views
Rebinding keys to define new keyboard shortcuts
I've checked Mathematica → Preferences, and poked around the options on the toolbar. However, I don't see a way to define new keyboard shortcuts in Mathematica.
I've used VIM for 10+ years, and I've ...
7
votes
2answers
366 views
List of Mathematica textual symbols
Context
I am using Mathematica to create live documents - documents that are both interactive and show mathematical derivations. Now, I'm aware that there are certain symbols that are available via:
...
14
votes
4answers
377 views
In a CDF can I suppress or avoid “This file contains potentially unsafe dynamic content…”
I created a CDF to distribute to a single trusted user who both knows and trusts me and everything I make for them.
I downloaded the CDF player and the CDF to one of their computers. The CDF works ...
2
votes
2answers
160 views
3
votes
0answers
69 views
BipartiteMatching hangs with floating-point weights in Mathematica 7 (package Combinatorica)
I am trying to use Combinatorica's BipartiteMatching algorithm on a weighted graph. I need to use real numbers as weights.
If I try the following
...
2
votes
1answer
124 views
Running Mathematica via JLink from a Servlet on Tomcat 7 Problem
I'm trying to make a java servlet running on Tomcat 7 for specilized mathematical calculations. So I want to link Wolfram Mathematica 8.0 mathkernel from my servlet via JLink (webMathmatica is not an ...
19
votes
2answers
631 views
Mathematica for Computer Scientists
Background
I've coded in C/Scheme for 10 years. I have a BS CS.
I've recently become very interested in pattern-matching (lisp's match macro), and term rewriting systems, which brought me to ...
10
votes
1answer
174 views
Camera Troubles in Mathematica
I'm trying to animate a torus being cut by a plane, so that as the plane enters the torus the part in front of the plane disappears (the idea is to show the cross section). That much I can do, but I ...
4
votes
2answers
183 views
Dates as FrameTicks on a ListLinePlot
For reasons too lengthy to explain, I would like to display a list of dates or years (as numbers or strings) as FrameTicks on a ...
5
votes
1answer
81 views
Is it possible to concatenate sounds?
I used to be able to make a Table of ListWaveform objects, and Export them; ...
1
vote
1answer
112 views
Backward compatibility issues while DumpSaving Interpolation polynomials
I have bkwrd compatibility issues when I save my NDSolve result (which is an interpolating polynomia) using DumpSave from Mathematica 8 on Windows 7 and then try ...
6
votes
2answers
648 views
3
votes
1answer
131 views
How do I get java to recognize import com.wolfram.jlink
I'm trying to write a java program that uses mathematica code for processing and graphs while using java for the front end. From what I've been able to glean from the j/link tutorials on the wolfram ...
2
votes
1answer
71 views
What replaced ListWaveform?
My old Mathematica code used ListWaveform to produce a sound file from a table of amplitudes and frequencies; this seems to no longer exist. What replaced it?
8
votes
6answers
308 views
How to make text flash for a short period
How could I display text that flashed red for a half second or so and then reverted to black? (Or was put in bold and reverted to normal, etc.)
9
votes
4answers
263 views
Recovering intermediate results from a Table after an interruption
I am interested in knowing if it is possible to recover intermediate results from a Table after an interruption.
Let us say I want to produce a really useful table
...
9
votes
1answer
150 views
Converting to machine precision
There are multiple ways to convert an expression to machine precision, for example:
...
7
votes
1answer
180 views
How to create a multi-selectable setterbar with colored buttons
Background: consider the following code-snippet.
...
5
votes
2answers
216 views
Normal[Series[ ]] does not give a normal expression
Let us say I want to show how the Taylor's series for Sin behaves:
...
4
votes
1answer
383 views
Efficient backtracking with Mathematica
Backtracking is a general algorithm for finding all (or some) solutions to some computational problem, that incrementally builds candidates to the solutions, and abandons each partial candidate c ...
15
votes
4answers
776 views
Plotting large datasets
I have a lot of data (e.g., 64x8192), to plot and it consumes too much memory (more than 2 GB) causing Mathematica to return "no memory available".
For example,
...
9
votes
2answers
592 views
Find Determinant/or Row Reduce parameter dependent matrix
I'm trying to find the determinant of a band diagonal matrix that has a parameter, $\kappa$, in some of the entries. Some entries are just numerical ones, others ($\kappa$ X number), while others are ...
6
votes
0answers
251 views
Inverse Laplace transform not obtained
I can't seem to be able to compute the inverse Laplace transform of a Laplace transform:
...
8
votes
1answer
301 views
How to position legends exactly where I want them?
I just noticed another plot legend question today and while user solutions to this, in particular code by @Jens, are IMO better than the built in solutions, exact positioning often still requires some ...
46
votes
2answers
41k views
Cutting bagels into linked halves
I recently came across this video: Mathematically correct breakfast, which shows how a bagel can be neatly sliced into two identical linked halves.
I'd like to try this with Mathematica. Here's a ...
6
votes
0answers
286 views
Using Mathematica as a data visualization front end for .Net applications?
I have a C# application that has 3-dimensional data that I wish to plot. Controls in C# for surface modeling are, in my experience, rather limited. I wish to have my C# application send the 3D point ...
4
votes
3answers
1k views
How can I label a ListDensityPlot with a color bar?
Here is an example of what is desired, only the result wouldn't be a contour plot, but a ListDensityPlot. The arguments would be a gradient and a list of numbers.
2
votes
3answers
362 views
Recursive function on list
Please consider the following: I have to deliver the weekly customer demand data on time. I can start to produce my products one week in advance. So I was thinking ...
5
votes
2answers
149 views
Pattern matching deletion of list items [duplicate]
Possible Duplicate:
How can I remove B -> A from a list if A -> B is in the list?
I'm working toward building a graph and use some code to construct my rules which results in a form ...
6
votes
1answer
99 views
When are EvaluationNotebook[] and ButtonNotebook[] different?
I am looking for a concrete code example where EvaluationNotebook[] and ButtonNotebook[] will return different results.
The ...
8
votes
1answer
195 views
How can I get the frame ticks from DateListPlot?
DateListPlot very nicely chooses major and minor frame tick and frame tick label/markers.
I am building a custom graphics function where either the ...
6
votes
2answers
212 views
Rule for orderless function Times
I have problems extending a replacement rule.
Schematically, this is the situation:
I have an expression and a rule, and they work perfectly together.
...
25
votes
4answers
655 views
Partitioning with varying partition size
How can I partition a list into partitions whose sizes vary?
The length of the $k$'th partition is a function $f(k)$.
For example: if $l = \{1, 2, 3, 4, 5, 6\}$ and $f(k) = k$. Then
the partitioning ...
9
votes
1answer
170 views
Mathematica: ListDensityPlot behavior different for arrays and points
I am using ListDensityPlot to output the results of a physical simulation. I've passed both an array of values and coordinates coupled with magnitudes to ListDensityPlot.
Although I expect identical ...
3
votes
1answer
297 views
Problem with Volume Rendering Using 3D Texture [closed]
I have been trying Yu-Sung Chang's Mathematica.SE answer on volumetric rendering.
This is what the result should look like.
However, I got a different result.
Could anyone help me find what the ...
11
votes
3answers
291 views
How can I return private members of a Mathematica package as the output of package functions without the “PackageName`Private`” prefix?
I have created a Mathematica package that manipulates various types of input physics data into a common form of output data for further analysis. To make this process more efficient and manageable, I ...
5
votes
1answer
113 views
How to make the Show function work in this case?
I can't get this to work, the Show function shows only the first plot. Why this happens and how to solve it?
Show[Plot[x^2, {x, 2, 10}], Plot[1 - x, {x, 1, -10}]]
...
20
votes
1answer
796 views
Programmatically retrieving e-mails from a remote server
Mathematica has a function for sending mail (SendMail) and can import the MBOX format. But what I'd like to do is ...
1
vote
1answer
218 views
Compatibility of Mathematica Notebooks written on Mac with Windows
I wrote a notebook on Mac OS 10.7.4 and run it on Windows XP at work. On my Mac I use a full version of Mathematia 8.0.1.0, whereas on the Windows-system only a trial version (Version 8.0.4.0.).
...
6
votes
1answer
602 views
Collision of axes labels and ticks
Is there a way to prevent ugly collision of axes labels and axes number like in the following examples, without the need of adding white space:
Plot1:
...
7
votes
4answers
262 views
Defining a Unique Domain for Solving Diophantine Equations
I am working on a research problem in discrete geometry to do with sphere packings, and believe it or not, I have been able to reduce it to finding the solutions to the Diophantine equation,
$$n = ...
