Tagged Questions
0
votes
1answer
64 views
Pattern match with Table for matrix dimension check
In Mathematica, often an expression involving matrices will encounter dimension mismatch errors, like we are multiplying a 3x2 matrix to a 3x4 matrix. Below we define a new symbol Dim, which can be ...
1
vote
1answer
80 views
How can I find the row differences of a matrix?
How can I compute the row differences of an m x n matrix to obtain an m-1 x n matrix; that is, given
how do I obtain
0
votes
3answers
185 views
How can I fill in a matrix at every iteration of a Do loop?
I have a matrix whose dimensions are 26x26x3. For my assignment I have written a program which is using a Do loop (maxx=maxy=10,maxz=2):
...
6
votes
0answers
227 views
MMA implementation of Earth Movers Distance?
Has anyone implemented in MMA the Earth Mover's Distance (EMD)? A concept dating back to Monge 1871, used to compare histograms and images, e.g., the CIEDE2000 Color Difference algorithm. Yossi ...
15
votes
4answers
439 views
How do I generate the upper triangular indices from a list?
I have some list
{1,2,3}.
How do I generate nested pairs such that I get
{{1,2},{1,3},{2,3}}?
That is I'd like a way to ...
18
votes
2answers
971 views
Cycles of length N in a graph
If I have an undirected graph represented with an adjacency matrix, how can I find all the subgraphs which are a cycle of length N?
I don't really know the math nor the programming language well, so ...
