How to use the 'splitapply' function for columns of a table?

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MathWorks Support Team 2019-8-9

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https://ww2.mathworks.cn/matlabcentral/answers/475780-how-to-use-the-splitapply-function-for-columns-of-a-table

评论： Walter Roberson 2021-10-22

采纳的回答： MathWorks Support Team

Can the 'splitapply' function work on multiple columns on a table without using 'for' loop?

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Answer 1

MathWorks Support Team 2019-8-9

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https://ww2.mathworks.cn/matlabcentral/answers/475780-how-to-use-the-splitapply-function-for-columns-of-a-table#answer_387188

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You can achieve this after converting the table into a matrix and then using the 'splitapply' function.

Please find the code snippet for a similar example below:

Age = [38; 43; 38; 40; 49];
Height = [71;69;64;67;64];
Weight = [176;163;131;133;119];
Gender = {'F';'F';'M';'F';'M'};
T = table(Age,Height,Weight,Gender);
[G,gender] = findgroups(T.Gender);
Tarray = table2array(T(:,1:end-1));
out_mean = splitapply(@mean,Tarray,G);