I have an excel file which contains 4076 rows and 13 columns. I want the average of every 42 rows of every single column and then store them in a new spreadsheet.Can you help me with the code?I'm a beginner using Matlab and I don't know much.

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Sofia Fourkioti
Sofia Fourkioti il 4 Nov 2017
Commentato: Sofia Fourkioti il 5 Nov 2017
here some of my efforts from different codes I found ... no results

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Image Analyst
Image Analyst il 4 Nov 2017
What about conv2()?
B = conv2(A, ones(42, 1)/42, 'valid');

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Andrei Bobrov
Andrei Bobrov il 4 Nov 2017
B = rand(4076,13);
a = 42;
i0 = ceil((1:size(B,1))'/a);
[ii,jj] = ndgrid(i0,1:size(B,2));
out = accumarray([ii(:),jj(:)],B(:),[],@mean);

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