MATLAB Answers


Delete a cell by a criterion???

Asked by Thor
on 5 Feb 2013

Dear all,

I have a cell array of 31x12x9 and in every cell is a 288x3 structure. I want to delete every cell wich has not the 288x3 structure. So all have x3 but the value 288 is in some cells different and these should be deleted! Thank you in advance!



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3 Answers

Answer by Conrad
on 5 Feb 2013
 Accepted answer

Hi Thor, try the following:

    % Create dummy data.
    S = cell(1,2,2);
    l1(288,3).Value = 1; l2(280,3).Value = 1;
    S{1,1,1} = l1; S{1,1,2} = l2; S{1,2,1} = l1; S{1,2,2} = l1;
    K = S(cell2mat(cellfun(@(x) size(x,1), S, 'UniformOutput', false))==288);



Answer by Youssef Khmou
on 5 Feb 2013

Your cell array is A of size m=31, n=12 , p=9 :

for x=1:m
  for y=1:n
      for z=1:p
            if(size(A{x,y,z},1)~=288 && size(A{x,y,z},2)~=3)


Answer by Jan Simon
on 5 Feb 2013
Edited by Jan Simon
on 5 Feb 2013

If C is your data cell:

C(cellfun('size', C, 1) ~= 288) = {[]};

Here the contents of the not matching cell elements are deleted, but not the cells itself. If you want to delete the cells, the result cannot be a cell array anymore but a cell vector only:

C = C(cellfun('size', C, 1) == 288);


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