MATLAB: Yearly average from monthly data

for looptime series

Hello,
It has been a while since I have made any new loops that I have not copied from old scripts, so I am a little out of practice. This question should be fairly easy for most to answer.
I have a data set with monthly data:
Size(A)=192,144,120
I would like to put this into ten, yearly averages:
Size(B)=192,144,10
I have just done it the long way around-
B(:,:,1)=mean(A(:,:,1:12),3);
B(:,:,2)=mean(A(:,:,13:24),3);
B(:,:,3)=mean(A(:,:,25:36),3);
B(:,:,4)=mean(A(:,:,37:48),3);
B(:,:,5)=mean(A(:,:,49:60),3);
B(:,:,6)=mean(A(:,:,61:72),3);
B(:,:,7)=mean(A(:,:,73:84),3);
B(:,:,8)=mean(A(:,:,85:96),3);
B(:,:,9)=mean(A(:,:,97:108),3);
B(:,:,10)=mean(A(:,:,109:120),3);
This works fine, but is a little tedious and I will be wanting to do this with much larger data sets in the coming months.
What is the best way to do this in a for loop?
Thank you!

Best Answer

s = size(A);
B = squeeze(mean(reshape(A,[s(1:2),12,s(3)/12]),3));
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