How to delete columns of a matrix that have fewer than 3 non-zero elements
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Hello,
How can I delete columns of a matrix that have fewer than 3 non-zero elements? Thank you!
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Accepted Answer
Wayne King
on 1 Mar 2012
Hi, I'm sure this isn't the most efficient way:
x =[
5 0 1 4 1
3 0 0 2 1
1 0 2 2 4
4 3 0 2 3
4 2 0 1 3];
for nn =1:size(x,2)
numz(nn) = length(find(x(:,nn)==0));
end
x(:,numz>2) = [];
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