How do I select n elements of a sequence in windows of m ? (matlab)

Question

Quick MATLAB question. What would be the best/most efficient way to select a certain number of elements, \'n\' in windows of \'m\'. In other words, I want to select the fir

Answer 1

Do you have enough RAM to store a 50-by-nWindow array in memory? In that case, you can generate your windows in one go, and then apply your processing on each column

%# idxMatrix has 1:50 in first col, 11:60 in second col etc
idxMatrix = bsxfun(@plus,(1:50)',0:10:length(yourVector)-50); %'#

%# reshapedData is a 50-by-numberOfWindows array
reshapedData = yourVector(idxMatrix);

%# now you can do processing on each column, e.g.
maximumOfEachWindow = max(reshapedData,[],1);