how to make a matrix elements randomly distributed

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Pham Ngoc Thanh
Pham Ngoc Thanh 2013-6-21
how to make a matrix m elements, which has n elements "one" or #0, randomly distributed, the remaining elements are zero (n<m).

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David Sanchez
David Sanchez 2013-6-21
Try this out (adapt the values to your needs):
m = 10;
n = 3;
pos = randperm(m*n,m);
M = zeros(m,n);
M(pos) = 1;
M =
0 0 0
1 1 0
0 1 1
0 0 0
1 0 0
0 0 0
0 0 0
1 0 1
0 1 1
0 0 1
M has the ones randomly distributed.

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Pham Ngoc Thanh
Pham Ngoc Thanh 2013-6-21
thanks a lot.

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