how to extract 3rd dimensions of cells?

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Afsaneh
Afsaneh 2015-6-3
评论： Walter Roberson 2015-6-3
i have a cell array which in every cell i have a 3 dimensional matrix.(x,y,3)
now i want to extract 3rd dimension of all cells: (:,:,1)
how can i do that without using for loop?
thanks.

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Walter Roberson
Walter Roberson 2015-6-3
ResultCell = cellfun(@(M) M(:,:,1), YourCellArray, 'Uniform', 0);
You might possibly want to
cat(3, ResultCell{:})
if you want the result as a 3D matrix stacking the individual layers, provided the individual layers are all the same size.
  2 个评论
Walter Roberson
Walter Roberson 2015-6-3
In the case where all of the arrays have the same size, and you want the result as a stacked matrix, there is also
T = cat(4, YourCellArray{:});
Result = reshape(T(:,:,1,:), [size(T,1), size(T,2), size(T,4)]);

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