how to extract 3rd dimensions of cells?

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.

Answer 1

[Walter Roberson]

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.

[Afsaneh]

Thanks, It really works.

[Walter Roberson]

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)]);