# All Questions

513 views

### How to write beveled fractions?

How to write beveled fractions like ${}^a/_b$? In contrast to $\frac{a}{b}$ and $a/b$ (see this question).
372 views

### What is the equivalent of a prototypical Manipulate in lower level functions?

Background: In the Mathematica tutorial 'Dynamic Interactivity' I read that there is a way of developing GUIs in Mathematica that do not use Manipulate. I want to ...
2k views

### Programming a numerical method in the functional style

I am new to Mathematica and I would like to learn a bit more about functional programming. At the moment I have assignments like programming different numerical methods (for integration: ...
1k views

### Formatting a fraction as a mixed number

Is there a command that will take a rational number and rewrite it in a mixed-number-like form? That is, I'd like to apply a command to something like 10/7 and get ...
960 views

### How to efficiently import videos

I need to do frame-by-frame analysis of videos. I can import the video files I need, but each file is too large to import at once. I can use the ...
2k views

### How to demodulate an FM signal in continuous-time?

I'm not sure if this is a math or Mathematica question, but I'm posting it here because I'm interested in possible Mathematica tools/functions to solve the problem. I'm stuck. I want to simulate ...
2k views

### Configuring Mathematica to send email from a notebook

I can't get my email settings set properly such that I can use SendMail[] to email directly from Mathematica. I have opened "Preferences", clicked on the tab ...
452 views

### List of atomic expressions

I was surprised to see Graph objects are atomic. Is there a way (through documentation or programmatically) to find all atomic heads? The ones I know of are: ...
2k views

### Parallelization problem in LinearSolve and Minimize

My CPU has got 8 cores (it is Intel Core i7-2600 3.40 GHz). When I try to solve a linear matrix equation using LinearSolve for large matrices, Mathematica just uses 4 cores to solve the problem (CPU ...
2k views

### List of Parallelize[]-able functions

The question is clear and is inspired by this question and the first comment on this question. Although there are many tricks for parallelizing things that are not ...
4k views

### How to install packages?

This is always a problem when I distribute my packages to colleagues working on different platforms. I have my packages installed into a private directory and I autoload some of them when Mathematica ...
659 views

### How can I speed up the classic GA for graph coloring?

I'm trying to compute the chromatic number of this graph (which is 28): g = Import@"http://www.info.univ-angers.fr/pub/porumbel/graphs/dsjc250.5.col"; My genetic ...
176 views

### How to find out what files are touched when Get is called?

Is there a way to capture all package files touched whenever a package is called via Get, Needs, ...
2k views

### Mathematica color schemes for the colorblind

Does Mathematica have a graphics option that makes plots intelligible for people with colorblindness?
474 views

### Intersecting parabolas in an image

I have a friend who is a math teacher (like me) and while out cycling took this picture. The idea would be to create the equations of the quadratics that model the bridges and super-impose them on ...
693 views

### 2D Visualization of links and knots

I am trying to draw a picture using Mathematica of three loops linking together in 3D as follows. ...
896 views

### How to map an image to get an illusion of 3D

I would like to distort or map a given jpg so it looks 3D when viewed from certain angle, as in the following youtube video: http://www.youtube.com/watch?v=IfCCUd8mFtg. The most interesting part of ...
213 views

### Creating documentation for sub-packages in Workbench

I'd like to create proper documentation for a package of mine, and Workbench in principle provides the tools to do this. However, I've split my package into multiple sub-packages (because I found it ...
625 views

### Poor results with ImageLines function

I'm trying to get my mind wrapped around Mathematica's image feature recognition functions. I'm intrigued by the ImageLines function for a couple future ideas I ...
316 views

### Using Boost with CreateLibrary

I was looking at the answer of Leonid of Faster alternatives for DayOfWeek and wanted to see how hard it would be to do something similar in C++ using an external library like Boost. I tried to ...
297 views

### Is it possible to cause a notebook to be hidden when pressing the close button?

Is it possible to cause a notebook to be hidden (Visible -> False) instead of closing it when pressing the close button in the title bar? The ...
157 views

### GraphicsMeshFindIntersections[ ] fails to detect intersections

GraphicsMeshFindIntersections[ ] is an undocumented function for, well, detecting intersections very efficiently. Take a look: ...
381 views

### how to make cursor jump automatically to next input cell after evaluating previous one?

When making separate cells in order to make separate computations to better see the result of each one before going to the next cell to do the next computation (which is a good way of doing things), ...
831 views

### What compilers are “suitable” for CompilationTarget->“C”?

The documentation for CompilationTarget says, "if you do not have a suitable C compiler then you will not be able to set CompilationTarget to C". Well at this time, I don't have a compiler installed ...
1k views

### How to determine how much of a table is generated?

If I'm generating a table from a slow function, like this: foo = Table[SuperSlowExpression, {1000}] is there a way to determine after submission (so it is too ...
199 views

### How do I override options with my own defaults?

I'm calling a function f from within a function g and would like to pass any valid options for ...
206 views

### Graph smoothing keeping vertices fixed?

Context Given a Graph like this one: ...
267 views

### Making a Mathematica package manager?

I'd like to get a serious discussion started about a package manager. This has come up elsewhere, and many people have implemented their own solutions. It would be nice to have a standardized way to ...
385 views

### Dynamic visualization of Graph[] on a webpage

How can we embed a dynamic version of a Graph object on a web page, similar to the one showcased on the networkx home page? This sort of dynamic visualization can ...
571 views

### Finding the perimeter, area and number of sides of a Voronoi cell

Does anyone have any suggestions how to determine the perimeter, area and number of sides of each Voronoi cell in Voronoi diagram?
4k views

### How to change default notebook background color?

How does one change the default notebook background color?
212 views

### Temporal database reconstruction in mathematica

<EDIT> after some internet research I found the database domain that deals with this kind of thing: Temporal Databases. I think my question therefore becomes how to reconstruct a temporal ...
361 views

### How to export .mtl files for 3D textured objects

I would really like to deploy my textured 3D graphics in the web with sketchfab in my blog. Unfortunately, Mathematica only exports the shape of the 3d graphics, i.e. the .obj file, but omits the ...
298 views

### How can I extract the outline of bubbles in my image?

I have an image: I tried to extract the outline of the bubbles, but I met with some problems. Firstly I tried the method used in Mathematica documentation for ...
450 views

### Exporting data extensions in fits file

Context In Astronomy the de facto standard for images and data is FITS. I would like to export heterogenous data sets into a single fits file. Attempt I am ...
696 views

### How to position text labels automatically to not overlap other graphics elements?

I was plotting reciprocal frame projection using Locators for a point to be expressed in terms of both the original basis (also specified with ...
719 views

### Roads network visualization by thickness and color intensity by population from GIS files

We can have road networks of the countries in GIS shape file.For exmple from here. Normally traffic flows are proportionate to populations of the cities. I wonder how we can have the same in ...
290 views

### Searching linked lists that contain lists?

Following the advice I've read here and other sites, I've been trying to use the Mathematica equivalent of a linked lists... ...
621 views

### Relational joining of tables

A common thing to want to do with data is to combine it (at least I thought this was a common thing). In SQL there is the idea of table joins "select id,v1,v2 from A,B where A.id=B.id" kind of thing. ...
718 views

### Can you apply the Cellular Automata function to a grid containing numbers?

Im attempting to simulate a simple evacuation model using cellular automata theory.My study aims to determine whether Cellular Automata can effectively represent how people would behave in a fire ...
651 views

### Workflow in the Mathematica and Workbench IDE

After visiting one of the Wolfram presentations, I started writing code for my number theory research project in Mathematica because I found it to be faster than Sage. I downloaded Workbench and ...
3k views

### How to plot periodic function's graphic?

How to plot periodic function's graphic? For example, f(t) = t when -5<t<5 && f(t+10) = f(t) ...
280 views

### Manually specifying distance metric to Nearest slows down calculation

Why does manually specifying the distance metric to Nearest slow down the calculation so much? This is relevant to my previous question. I've been using ...
180 views

### Expanding derivatives of hypergeometric functions

Sometimes Mathematica expresses results of integration or summation in terms of symbolic derivatives of Hypergeometric2F1 function, and cannot further simplify ...
484 views

### 1D quasicrystal: points on a line nearest to points on a lattice

I have a simple lattice / line manipulation: ...
535 views

### Is there a built in function to obtain the back diagonal of a matrix?

Given the following matrix: m = Array[Subscript[a, #, #2] &, {4, 4}] how can I find the skew diagonal or anti-diagonal or back diagonal of the matrix ...
769 views

### OpenSCAD like functionality with Mathematica?

I keep seeing reference to use of Mathematica as a CAD tool (for instance: http://www.makerbot.com/support/guides/design/). I'd like to use it as such if feasible, but I'm having trouble locating ...
642 views

### How to map rotate, pan, zoom to manipulate controls

I am wondering if there is a way to restrict the motion of the rotate mouse cursor in when moving around a 3d plot. For example, I want the y direction of the cursor to correspond to pulling the z ...