Martin Larsen on Fri, 24 Mar 2006 17:00:28 +0100


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Re: sorting columns of a matrix 

How do I sort columns in a matrix? When I use vecsort, I can only
sort the column according to one row, but I want to sort them
according to all rows, so that all equal columns will be together.
For example,
0 2 1 2 1 2
1 2 1 3 1 2
should become
0 1 1 2 2 2
1 1 1 2 2 3


See users.pdf: vecsort


m=[0,2,1,2,1,2;1,2,1,3,1,2]


[0 2 1 2 1 2]

[1 2 1 3 1 2]


vecsort(m,[1,2])


[0 1 1 2 2 2]

[1 1 1 2 2 3]

Regards
Martin