size(mass_AnPoll)
size(mer)
Perhaps you want to append the elements
mass_AnPoll = 0;
for i = 1:5
mass_AnPoll = [mass_AnPoll, mer(1:i)]; % or [mass_AnPoll; mer(1:i)]
end
If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:
