How to get the mean of a cell array of matrices

Question

YH 2019-12-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/495882-how-to-get-the-mean-of-a-cell-array-of-matrices

评论： YH 2019-12-10

采纳的回答： Stephen23

test_2019.mat

Hallo,

I have a cell array (99*1000)

each cell for example test {1,1 } looks like this 1*4 double : [-1.7, 0.8,0.276, -0.2]

I want the mean of each column and for the entir cell array so that at the end will have a cell array (1*1000) with each cell: [mean of the first column, mean of the second column, mean of the third column, mean of the fourth column]

I hope some one could help, I know it a little bit complicated to explain exactly what I want to I attached the cell array as mat file.

I tried many things with cellfun and arrayfun but it seems that I am missing something because I couldn't reach the form that i really want.

Any tipps would be really helpful!

thanks in advanced!

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Answer 1

Stephen23 2019-12-10

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/495882-how-to-get-the-mean-of-a-cell-array-of-matrices#answer_405725

编辑：Stephen23 2019-12-10

在 MATLAB Online 中打开

test_2019.mat

>> out = permute(num2cell(mean(cell2mat(permute(test,[1,3,2])),1),2),[1,3,2]);

Checking:

>> size(out)
ans =
      1   1000
>> out{1}
ans =
  -1.346736   0.326463   0.236545  -0.045276
>> mean(vertcat(test{:,1}),1)
ans =
  -1.346736   0.326463   0.236545  -0.045276