Average of multiple cell arrays

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Christine
Christine 2020-6-3
评论： Christoph Thorwartl 2021-6-24
Hi all. I've figured out how to get the average of multiple cell arrays so that the end product is a 1x22051 complex double. However, is there a code that could simplify this? I have over 50 cell arrays, but shortened it for this example.
avg_ydft = (ydft{1,1}+ydft{1,2}+ydft{1,3}+ydft{1,4}+ydft{1,5}+ydft{1,6}+ydft{1,7}+ydft{1,8})/8;

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Stephen23
Stephen23 2020-6-3
编辑：Stephen23 2020-6-3
Assuming that each cell contains a 1x22051 vector (i.e. they are all the same size):
avg_ydft = mean(cat(3,ydft{:}),3)
https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html
https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists
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Christoph Thorwartl
Christoph Thorwartl 2021-6-23
@Stephen Cobeldick: Is the same possible for standard deviation?
I get the following error. How could I rewrite the code?
Error using var (line 197)
W must be a vector of nonnegative weights, or a scalar 0 or 1.
Thank you and best regards,
Christoph
Christoph Thorwartl
Christoph Thorwartl 2021-6-24
I have asked the question separately (https://www.mathworks.com/matlabcentral/answers/864270-standard-deviation-of-multiple-cell-arrays).
This modified code also works for the standard deviation:
SD = std(cat(3,M{:}),[],3)

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