MATLAB: Removing rows contain NaN element from 3D array

matrix manipulation

A(:,:,1) =
                 NaN                 NaN                 NaN   1.000000000000000
                 NaN                 NaN                 NaN   1.000000000000000
                 NaN                 NaN                 NaN   1.000000000000000
  -0.251395732283393   0.831232695305901   0.495835045195662   1.000000000000000
  -0.351395732283393   0.831232695305901   0.495835045195662   1.000000000000000
                 NaN                 NaN                 NaN   1.000000000000000
   0.223016679421216   0.961124117481440  -0.162800465280223   1.000000000000000
A(:,:,2) =
                 NaN                 NaN                 NaN   1.000000000000000
                 NaN                 NaN                 NaN   1.000000000000000
                 NaN                 NaN                 NaN   1.000000000000000
  -0.294547842132722   0.762119326903777   0.576555027950231   1.000000000000000
                 NaN                 NaN                 NaN   1.000000000000000
   0.208731731285917   0.936100623203798  -0.283101903193612   1.000000000000000
                 NaN                 NaN                 NaN   1.000000000000000
How can I remove rows contain NaN from 3D A array? After removing each row contain NaN, sub-arrays' dimensions will not be equal. Is it allowed in Matlab?

Best Answer

No, you cannot have different size pages in a matrix.
You could convert the 3D array into a cell array of 2D matrices and remove the nans from these matrices:
cellA = num2cell(A, [1 2]); %keep dimension 1 and 2 together
nonancellA = cellfun(@(m) m(~any(isnan(m), 2), :), cellA, 'UniformOutput', false);
Whether or not it makes later processing easier, only you can say.
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