double loop formation question

Hello,

I have a doubt about the possibility of forming another loop of following repetation (the size of GWdepth is 74*100*1566, 74 and 100 indicate the lon and lat):

j = 1

for i = 1:30

depth_week_j(:,:,i) = GWdepth(:,:,j);

j = j + 52

end

mean_depth_week_j(:,:,1) = nanmean(depth_week_j,3);

j = 2

for i = 1:30

depth_week_j(:,:,i) = GWdepth(:,:,j);

j = j + 52

end

mean_depth_week_j(:,:,2) = nanmean(depth_week_j,3);

...... I need to repeat this process for 52 times until j = 52,

j = 52

for i = 1:30

depth_week_j(:,:,i) = GWdepth(:,:,j);

j = j + 52

end

mean_depth_week_j(:,:,52) = nanmean(depth_week_j,3);

Any ideas on how to form a double loop based on this condition?

Answer 1

[David Hill]

for j=1:52
    jj=j;
    for i = 1:30 
        depth_week_j(:,:,i) = GWdepth(:,:,jj);
        jj = jj + 52;
    end
    mean_depth_week_j(:,:,j) = nanmean(depth_week_j,3);
end

[kim chan]

thank you so much!