MATLAB: How to eliminate certain columns from a matrix

matrix manipulation

If I need to remove any column how do I do it?
For example:
s is a mxn matrix.I need to remove the odd columns i,e, the 1st,3rd.. columns.

Best Answer

Let A be matrix 
A(:,1:2:end) = []    % remove odd columns
A(:,3) = []       % remove third column
idx = [1 2 5 7] ;
A(:,idx) = []  % remove columns specified in idx
Related Question