hello
there is one Q array per startInd value so either you use Q in a for loop without indexing (if you can tolerate to overwrite Q at each iteration, or store each result separately as shown below :
and also correct startInd dimensions as it should be a 1D vector
a = 1:10; % 1*10 vector
J = reshape(repelem(a,2,2),2,2,length(a)); % expand a to 2*2*10 matrix
wsize = 5; % window size
startInd = [1 2 3 4]; % start index of the window
for k = 1:numel(startInd)
disp(['-- Iteration index k = ' num2str(k) '--'])
Q = J(:,:,startInd(k):startInd(k)+wsize) % yes you can
% if you want to store each result separately
Qstore{k} = Q;
end
Qstore{k}
