Creating a 3D array out of multiple 2D arrays

I have 10 masks that are 256 x 256 each. These masks are for 10 respective slices, so I want to combine them and make a 3D array ( 256x256x10). How do I do this? Ideas? Thanks!

Answer 1

[Sean de Wolski]

cat(3,mask1,mask2,...)

doc cat %for more info

[Safwana Razak]

hi, what if i got > 100 array in 3rd array, how to automate it?

cat(3,mask1,.....mask100)

[Steven Lord]

Revise your code so it doesn't create 100 individual variables. Preallocate the array to be the desired size from the start and fill it in.

A = magic(4);
B = repmat(A, [1 1 5]); % or
C = zeros(4, 4, 5);
for k = 1:5
B(:, :, k) = A^k;
C(:, :, k) = A^k;
end

Answer 2

[Med_Imager]

You can also do

Mask_3D(:,:,1)=Mask_1

for index=1:10
   eval(['Mask_3D(:,:,index)=Mask_' num2str(index)';']);
end

Answer 3

[Kris Hoffman]

I just had this exact problem (even with the same dimensions)

If the masks are all in one cell array,

A = cat(3,YourMaskArrayHere{:})

Produces a 256x256x10 uint16 array.