matrix manipulations of columns

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Charlene
Charlene 2013-5-8
How can I replace all even columns of matrix A by columns of ones.
pls note that matrix A is A=random('norm',3,0.2,100,100)
thx

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Azzi Abdelmalek
Azzi Abdelmalek 2013-5-8
编辑：Azzi Abdelmalek 2013-5-8
A=random('norm',3,0.2,100,100)
A(:,2:2:end)=ones(size(A(:,2:2:end)))

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