How to produce all possible combination of matrices when deleting vector rows from original matrix?

I want to delete 5 vector rows from a 40 x 2 matrix, to give me 40C5 possible combinations ie 658 008 possible matrix combinations? Is this possible to do on MATLAB via iteration?

Any suggestions on which functions to use would be appreciated

Answer 1

[Rik]

This should help you along. The construction with the for-loop makes use of the fact that Matlab loops through the second dimension, so numel(rows) is 5.

data=rand(40,2);
for rows=nchoosek(1:40,5)'
    tempdata=data;tempdata(rows,:)=[];
    %put actual calculation using tempdata here
end