find commas in a cell

Question

ludvikjahn 2015-3-13

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https://ww2.mathworks.cn/matlabcentral/answers/182992-find-commas-in-a-cell

回答： Audrey 2015-3-13

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good morning, I just wonder why

if I run

strrep(A,',','.')

( (where A is a cll array), it works

but I can't run the command

find(A,',')

(I wanted to know how many commas there are in order t know if it is possible to replace them in a short time). And I wan to find a method to find commas in my cell array! Thanks

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Answer 1

Audrey 2015-3-13

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You can use strfind() to find a pattern within text. So, for example:

A={'asdf,asdf','asdf,asdf,asdf','asdf'}; strfind(A,',')

ans =

[5] [1x2 double] []

I'm sure you can do it with regular expressions as well, but I am not familiar with that. It looks to me like strrep() already does what you want (replace commas in a short time).

If you want to apply a function to a cell array that does not accept cell arrays as input, you can use cellfun() to apply a function to each array in a cell individually.