pick columns with a index vector

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Linden
Linden 2014-1-9
评论： Azzi Abdelmalek 2014-1-9
Hi I have a 30x100 data matrix and a 1x100 index vector with 1s in some columns and 0 elsewhere. How can I pick up columns in the data matrix corresponding to the 1s in the index vector. Thanks in advance.

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Azzi Abdelmalek
Azzi Abdelmalek 2014-1-9
编辑：Azzi Abdelmalek 2014-1-9
%Example
A=rand(30,100)
B=randi([0 1],1,100)
%----------------------
out=A(:,logical(B))
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Azzi Abdelmalek
Azzi Abdelmalek 2014-1-9
Ok, then mark the answer as accepted

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