MATLAB Answers

1

Uppercase string from the cell array

I have a cell array a = {'AA_DFA_DD' ,'DSFA_dfaf' ,'DDDD' , 'DFE1' ,'dfs_DD'}
How can extract only the upper case string from the cell array
my answer should be {'AA_DFA_DD',[],'DDDD','DFE1',[]}
How can i do this?
Thanks a lot

  1 Comment

+1 for a clear question with input and output examples.

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2 Answers

Answer by Stephen Cobeldick on 12 Aug 2015
Edited by Stephen Cobeldick on 12 Aug 2015
 Accepted Answer

regexp(a,'^[^a-z]+$','match')

  2 Comments

It works well
Can give me the small explanation of expression
Thanks a lot
^ % match start of string
[^a-z] % match any character EXCLUDING lower-case
+ % repeated one or more times
$ % match end of string
These are all explained in the documentation:

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Answer by Azzi Abdelmalek
on 12 Aug 2015
Edited by Azzi Abdelmalek
on 12 Aug 2015

out=a(cellfun(@(x,y) isequal(x,y),a,upper(a)))
or
out=cell(size(a))
idx=cellfun(@(x,y) isequal(x,y),a,upper(a))
out(idx)=a(idx)