How can I save the results of a nested loop?

I have two input matrices: qq and om

l = [0 0.05 0.1 0.15];
qq = perms(l).';
m = [0.01 0.001 0.0001 0.0002];
om = perms(m);

These inputs get fed in my Function which in return will output a 1-by4 output, so I created a 24-by-4 results

results = zeros(width(om), length(om)*length(qq));
for i=1:length(om)
    for j=1:length(qq)
        results(i,j)  = Function(qq(:,j),om(i,:))
    end
end

since the output of my function is 1-by-4, I can't save it in a 1-by-1 cell so I get:

I get: Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-4.

I also tried

[results(i,1) results(i,2) results(i,3) results(i,4)]  = AA_BL_M(qq(:,j),om(i,:))

this seems to work but doesn't save the iterations:

results  = AA_BL_M(qq(:,j),om(i,:))

Answer 1

[Cris LaPierre]

Note that your preallocation of results does not match the number of times your for loops will run. Keeping your for loops the way they are, your resutls variable will need to be of size (i,j,4) to capture your results (or a (i,j) cell array)

You could try this

results = zeros(length(om), length(qq),4);
...
results(i,j,:)  = Function(qq(:,j),om(i,:))

or

results = cell(length(om), length(qq));
...
results{i,j}  = Function(qq(:,j),om(i,:))

[Shahpour Turkian]

Thank you Cris!