How to use mat2cell in splitapply?

Question

JFz 2017-3-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/332325-how-to-use-mat2cell-in-splitapply

评论： JFz 2017-4-4

Hi,

I used findgroup and get a G as the output. I would like to apply G to a numeric matrix (MxN) to split the matrix into several cells such that, each cell contains a smaller sized matrix (mxN).

How to write the code? I tried this but got error: Not enough input arguments. out = splitapply(mat2cell, mat, [1, 1], G); Thanks.

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Jan 2017-4-4

You use "mat2cell", which is a function call. Do you mean "@mat2cell", which is the function handle?

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Answer 1

Guillaume 2017-4-4

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https://ww2.mathworks.cn/matlabcentral/answers/332325-how-to-use-mat2cell-in-splitapply#answer_261727

Is

splitapply(@(m) {m}, mat, G)

what you're after?

You could do the same with mat2cell if you really wanted, it's just slightly more complicated and pointless:

splitapply(@(m) mat2cell(m, size(m,1), size(m, 2)), mat, G)

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JFz 2017-4-4

Thank you!

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Answer 2

Sangeetha Jayaprakash 2017-4-4

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编辑：Sangeetha Jayaprakash 2017-4-4

I am assuming you are using the "findgroups" and "splitapply" functions to group a matrix into cells. From the error, it looks like the function "mat2cell" being applied to each group is not getting the required matrix argument.

Maybe the second format specified here to use splitapply might help:

http://www.mathworks.com/help/matlab/ref/splitapply.html