Removing all-NaN Rows/Columns from Cell Matrix?

3 vues (au cours des 30 derniers jours)
John R.
John R. le 26 Août 2014
Commenté : John R. le 26 Août 2014
Let's say I have the following cell matrix that contains NaN's, numbers, and strings...
A = {...
0 2 'All' NaN NaN 2
NaN NaN NaN NaN NaN NaN
NaN NaN 'Yes' NaN NaN 1};
Is there an easy way to identify the rows and columns that contain all NaN's? In this example, I would like to remove row 2, and then columns 4 and 5. The result would be...
B = {...
0 2 'All' 2
NaN NaN 'Yes' 1};
I have brute-forced it by checking every value, but I'm sure there is a more methodical approach using cellfun perhaps. My method took 30 lines but I'm guessing there it can be done in just a few lines.
Thanks!

Réponse acceptée

Azzi Abdelmalek
Azzi Abdelmalek le 26 Août 2014
A = { 0 2 'All' NaN NaN 2
NaN NaN NaN NaN NaN NaN
NaN NaN 'Yes' NaN NaN 1}
idx=cellfun(@(x) all(isnan(x)),A)
ii=all(idx,2)
jj=all(idx)
A(ii,:)=[]
A(:,jj)=[]
  1 commentaire
John R.
John R. le 26 Août 2014
Worked like a charm, thanks!

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