Do you want to save take? Or maybe tst? Either way, you can create a cell array
C = cell(ndays,1);
before the loop and store whatever you want in C{d} at each iteration of the loop.
For example:
ndays=365;
C = cell(ndays,1);
for d=1:ndays
help=[Temperature(:,d),Idx(:,d)];
idx=Idx(:,d);
tst=find(idx==6);
take=help(tst,:);
%save test in a 3D matrix [takex ndays];
C{d} = take;
end
To access the data, you use the same syntax used to store the data. To get the data from the 5th iteration, for example, you can use
data = C{5}
However, running your code on the .mat files you provided gave me an error after 10 iterations because Temperature and Idx only have 10 columns instead of 365 columns.
