pick columns with a index vector

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.

Answer 1

[Azzi Abdelmalek]

%Example
A=rand(30,100)
B=randi([0 1],1,100)
%----------------------
out=A(:,logical(B))

[Linden]

Doesn't work. Subscript indices must either be real positive integers or logicals.

thanks

[Linden]

Worked, thanks a lot.

[Azzi Abdelmalek]

Ok, then mark the answer as accepted