3
votes
1answer
309 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
83 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?
9
votes
6answers
395 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.)
15
votes
4answers
544 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 ...
10
votes
1answer
264 views

Converting to machine precision

There are multiple ways to convert an expression to machine precision, for example: ...
7
votes
1answer
374 views

How to create a multi-selectable setterbar with colored buttons

Background: consider the following code-snippet. ...
5
votes
2answers
513 views

Normal[Series[ ]] does not give a normal expression

Let us say I want to show how the Taylor's series for Sin behaves: ...
7
votes
1answer
955 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 ...
21
votes
4answers
2k 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, ...
10
votes
2answers
1k 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 ...
7
votes
0answers
559 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
839 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 ...
52
votes
2answers
42k 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
461 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
4k 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
612 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
221 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 ...
7
votes
1answer
137 views

When are EvaluationNotebook[] and ButtonNotebook[] different?

I am looking for a concrete code example where EvaluationNotebook[] and ButtonNotebook[] will return different results. The ...
9
votes
1answer
338 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
291 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. ...
40
votes
5answers
2k 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 ...
8
votes
1answer
355 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 ...
13
votes
3answers
677 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
127 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}]] ...
22
votes
1answer
2k 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
347 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.). ...
11
votes
1answer
2k 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
429 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 = ...
9
votes
2answers
916 views

How to calculate mix of 4 colors defined in CIELAB L*a*b* model?

I have 4 colors that I converted from RGB to CIELAB L*a*b* model. How can I calculate mix of these 4 colors when I have (L,a,b) for each such color? How can I ...
4
votes
1answer
589 views

Computing Slater determinants

I need to compute Slater determinants. I'm wondering if I would benefit from assigning each of my functions to a variable prior to computation. I'm working with Slater determinants, but my question ...
5
votes
1answer
265 views

Accessing methods and properties of C++ objects?

Is it possible to access the properties or methods of C++ objects created with LibraryLink or MathLink like with J/Link ? Such capability doesn't seem built-in yet and I'm not sure it ever will as ...
7
votes
4answers
2k views

Checking if two trigonometric expressions are equal

Say I have two trigonometric expressions which are a bit complicated. Is there a quick way to check if they reduce to the same thing (that they are equal) using Mathematica? I was solving this: $y'' ...
4
votes
2answers
293 views

Returning Replacement Rules in a function and using it later on

I would like a function which returns replacement rules as some internal mathematica functions are doing and use the results in other functions. I could not find any information on that and I'm ...
16
votes
5answers
669 views

Is this the most efficient way to round approximate integers to integers while leaving other Reals untouched?

This might seem like an overly simple question, but I need to specify custom plot tick marks as integers (no trailing decimal point) if they are approximately integers, but not if they are not. Using ...
4
votes
2answers
829 views

A dot appearing after a zero, and making the entries of a matrix into fractions

For more info about the difference between 0. and 0 I am a self-taught Mathematica user and I have some elementary questions-- perhaps too elementary for this site, but here they are. If ...
14
votes
4answers
472 views

Easy button or hot key to switch between `Working` and `SlideShow` Screen Environments to avoid trip to menu

When I edit a slide show it easy to copy whole slides in Working Screen Environment but nice to preview slides in SlideShow ...
6
votes
2answers
221 views

How can I dynamically get a file whenever it is saved in Workbench?

I want to get a file once and only once at the start of a coding session. Then, whenever I save the file in the Wolfram Workbench, have it be gotten automatically. How can I construct such a utility?
3
votes
2answers
603 views

X label in GraphicsColumn is cut off

I'm trying to use GraphicsColumn to plot two curves with very different ranges. for example, ...
7
votes
3answers
563 views

Overlapping ArrayPlot

I have two ArrayPlots, and I want to overlap them as it is done here. For clarity, suppose ...
0
votes
2answers
319 views

DateListPlot FillingStyle problem

In the following query, If the option PlotStyle->{Red,Blue} is inserted it works but FillingStyle->{Red,Blue} does not: ...
20
votes
4answers
3k views

K-means clustering

In MATLAB, there is a command kmeans() that divides an array into $k$ clusters and calculates the centroid of each cluster. Is there any command in Mathematica to ...
5
votes
2answers
400 views

From a list of dates get a list of the last date available in a each month

I wondered if anyone has another or even a more direct way of finding the last dates of each month available from a list of successive dates? I currently do the following (note: nothing special about ...
8
votes
1answer
93 views

How can I defer the loading of a PopupView control until it is used?

Background: I have several PopupViews of which the loadtime adds to the startup time of a program. To improve the perceived performance I want to defer the loading ...
1
vote
1answer
205 views

Can I use Table without the appropriate bounds?

I´d like to use the Table command without defining n, so that I can have a list of n ...
5
votes
0answers
120 views

Calculating a limit with a result that is discontinuous in the parameters

The following limit is left unevaluated (Edit: added the assumption that $\epsilon$ is real thanks to the comment below): ...
19
votes
3answers
1k views

Finding the centroid of a disk in an image

I got about 100 images of the sun and have to find the centre of the star in the images. I have binarized the images and used ComponentMeasurementsto find the ...
8
votes
1answer
216 views

SetPrecision within Block

I am reading Mathematica Cookbook, chapter 1. Author gives two examples, with the following explanation You can control precision within a complex calculation (without using ...
10
votes
5answers
402 views

How do you change the font size of a Manipulator label?

I have a stand alone Manipulator (it is not in a Manipulate) and would like to know how to alter the style of the label. There ...
12
votes
2answers
394 views

Anti-aliasing with the multiple-object form of Polygon?

Observe: rand = RandomReal[1, {4, 3, 2}]; Graphics @ Polygon @ rand Graphics[Polygon /@ rand] I am losing ...
31
votes
2answers
6k views

Image Shadow Removal in Mathematica

The task is: Image shadow removal is an important topic in image processing. If you feel curious about it, you may take a look here, or just google for it image shadow removal There are also a ...

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