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How to calculate the average of matrixes with one row?

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Good morning ///// I have 40 matrices, each with one row, each matrix composed of 2400 elements ( numbers ). how can I calculate the average? Element to the corresponding element. the result will be one matrix with 2400 elements. //// thank you///

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Image Analyst
Image Analyst 2017-4-11
Try this:
% rv = your row vector names
% Concatenate all 40 variables vertically.
matrix2d = [rv1;rv2;rv3;rv4;rv5;............rv39;rv40];
theMeans = mean(matrix2d, 1); % A 1 by 2400 row vector.

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