MATLAB Answers

How to extract the values that I want in a cell array?

1 view (last 30 days)
M G
M G on 11 Nov 2011
Hey all,
If we have: a={'1,17951,1,0' ; '1,20345,1,0' ; '1,22950,1,0' ; '1,25360,1,0'};
and I want to exclude 1,...,1,0 which are the same in all and as a result have cell array b as b = {17951 ; 20345 ; 22950 ; 25360}; how can I do that?
Thank you so much for your hint in advance.
Mehdi :)

  0 Comments

Sign in to comment.

Accepted Answer

Andrei Bobrov
Andrei Bobrov on 11 Nov 2011
b = regexp(a,'\d\d\d\d\d','match')
b = cat(1,b{:})

  0 Comments

Sign in to comment.

More Answers (2)

Wayne King
Wayne King on 11 Nov 2011
How is this different than the answer I gave before?
a={1,17951,1,0 ; 1,20345,1,0 ; 1,22950,1,0 ; 1,25360,1,0};
b = cellfun(@(x) x(x>1),a,'uni',0);
b(cellfun(@isempty,b))=[];

  2 Comments

M G
M G on 11 Nov 2011
No, this one is different. The previous one worked perfectly. I realized that my actual values are in |''| e.g. |'1,17951,1,0'|instead of |1,17951,1,0|.

Sign in to comment.


Fangjun Jiang
Fangjun Jiang on 11 Nov 2011
I would use the comma as a way to split them and the select the second column.
a={'1,17951,1,0' ; '1,20345,1,0' ; '1,22950,1,0' ; '1,25360,1,0'};
b=regexp(a,',','split');
c=cellfun(@(x) x{1,2},b,'uni',false);
d=str2double(c)

  1 Comment

Andrei Bobrov
Andrei Bobrov on 11 Nov 2011
Hi Fangjun! Variant:
b = regexp(a,',','split');
b = sortrows(cat(1,b{:})')'
b = b(:,end)

Sign in to comment.