# All Questions

135 views

### Colorize a 3D distribution of points according to density

Suppose we have some random 3D distribution of points. I'll use the spherical ball defined below as an example and a starting point for the discussion here : ...
41 views

### Simplify rearranges equations?

I've been using Simplify/FullSimplify to simplify some nasty equations, and by and large it does well but sometimes it rearranges equations in an unhelpful way. ...
100 views

### A* algorithm for finding shortest path in a graph

FindShortestPath finds the shortest path between two vertices in an edge-weighted graph, allowing a choice between the Dijkstra and Bellman-Ford algorithms. In my (limited) understanding, both of ...
71 views

### How to increase processing speed? [closed]

Well, let's first begin with the specs of my computer: Win 8 i7-3537U CPU@2.00GHz 2.50GHz 4GB of RAM 64-Bit And using Mathematica 8 I have to create some programmes to solve statistical problems, and ...
46 views

### Can I make a function which depends on several arguments which are not independent?

Here's a simple example Suppose have the permanent relation that z is proportional to xy^2, for real numbers s. z = s x y^2 Now, we are interested in ...
73 views

### Initial and boundary value errors

NDSolve::ivone: Boundary values may only be specified for one independent variable. Initial values may only be specified at one value of the other independent variable. >> I keep getting this, ...
51 views

### How to divide a notebook into sections? [closed]

I've seen some very nicely formatted Mathematica notebooks with sections, explanatory text, etc., but I can't figure out how to do something similar. The documentation is not especially helpful here ...
43 views

### Make duplicate string then join two strings together in a table

I have two lists of data, dataA and dataB. ...
57 views

### How to save the output file and make it run without mathematica? [closed]

I want to save a file, as the picture shows, and make it run without mathematica. I have to move this file to another computer which dose not install mathematica and run this file with all functions, ...
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60 views

### Plotting 4D phase portrait and basins of attraction

I have a four dimensional vector x={x1,x2,x3,x4} and 4x4 matrix A. I also have four replicator equations below: x1'= x1.((A.x)[[1]] - x.A .x) x2'= x2.((A.x)[[2]] - x.A .x) x3'= x3.((A.x)[[3]] - x.A ...
47 views

### Temparture/date histogram

For our homework, I need to make a histogram for average temperature in one place from 1955.1.1 to 2014.1.1 for each day in that time interval . The data is give in na a text format which i can import ...
x = 5; tempx = 6; Begin["temp"] {x, Globalx, tempx} The result in my Mathematica session is {5,5,6}, but it's ...