Re: Mask the matrix

[Przemek Klosowski]

You can do it this way: a(:,!sum(a==0))

Explanation:

 - a==0 is a matrix with '1' where your data has zeros
 - sum(a==0) adds them up columnwise, so it will be zero only if no zeros were 
in that column.
 - a(:,!sum(a==0)) selects full columns based on a boolean mask created from 
the prev. expression