Mean of cell array containing matrices

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Hi,
I have a 1x10 cell array, each contains a matrix of nx2 (8x2, 9x2, 6x2, 7x2, 7x2...). I would like to take the mean of each column of the matrices, and re-sort the cell array accoring to the means. I tried to use mean and cee2mat and ran into dimension problems...Thank you in advance for helping!!!

Accepted Answer

Peng Li
Peng Li on 15 Apr 2020
Not sure what do you mean by "re-sort the cell array according to the means" as you have two means corresponding to each cell. Below example shows how to take the means and each column within a cell, and sort the cell based on the mean of the first column.
% generated a 1 by 10 cell, each with a n*2 random matrix.
% n generated randomly within 1 and 20
ind = 1:10;
testCell = arrayfun(@(x) rand(randi(20), 2), ind, 'UniformOutput', 0);
% mean of each column within cell
meanInCell = cell2mat(cellfun(@mean, testCell, 'UniformOutput', 0)');
% sort by the mean of first column
[~, indSort] = sort(meanInCell(:, 1));
sortTestCell = testCell(indSort);

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