problem of matrix operations

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mahesh chathuranga
mahesh chathuranga 2013-9-30
编辑： Andrei Bobrov 2013-10-3
i have a n*n matrix. i want to obtain (row number-column number) matrix.for a 4*4 matrix result should be
[0 -1 -2 -3;
1 0 -1 -2;
2 1 0 -1;
3 2 1 0];
i want to do this for any (n*n) matrix.is there any method to do this.

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采纳的回答

Honglei Chen
Honglei Chen 2013-9-30
You can do
rownumber = 4
colnumber = 4
bsxfun(@minus,(1:rownumber)',1:colnumber)
Or considering the special form of this matrix, you can just do
toeplitz((0:rownumber-1)',0:-1:-colnumber+1)

更多回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-9-30
a=rand(4) % Example
n=size(a,1)
bsxfun(@minus,repmat((1:n)',1,n),(1:n))
Andrei Bobrov
Andrei Bobrov 2013-9-30
编辑：Andrei Bobrov 2013-10-3
toeplitz(0:3,-(0:3))

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