concatenate vertically along the 3rd dimension of a matrix

I have a matrix which has these 3rd dimensions. A(:,:,1), A(:,:,2), A(:,:,3)

Now, I wanted these three to be vertically concatenated .

I know this: vertcat(A(:,:,1), A(:,:,2), A(:,:,3));

I wanted to know other solutions as the no.of 3rd dimensions seem to change for every loop.

Thanks

Answer 1

[Guillaume]

splitA = num2cell(A, [1 2]); %split A keeping dimension 1 and 2 intact
vertcat(splitA{:})

[Varshini Guddanti]

Thanks for the reply!

[mario alejandro]

thanks! you are the best

Answer 2

[Andrei Bobrov]

reshape(permute(A,[2,1,3]),size(A,2),[])'

[Varshini Guddanti]

Thanks for your answer!

This one gives the resultant matrix dimensions as columnsxrows .

But, I want it as rowsxcolumns. Can you help me?

[Andrei Bobrov]

"rowsxcolumns" - what is it?

[Mariana]

What about with a generic number n of matrices

[piyush kant]

reshape(permute(A,[1,3,2]),[],size(A,2))

Answer 3

[Image Analyst]

Not sure what you mean by saying you have a matrix with these planes along the third dimension A(:,:,1), A(:,:,2), A(:,:,3)? They are already along the third dimension. For example they could be the red, green, and blue color channels of an RGB image. To concatenate 2d arrays along the third dimension, so

array3d = cat(3, array2da, array2db, array2dc, array2dc, .....);

for as many 2D arrays as you have.

[Varshini Guddanti]

Yeah, I want to concatenate the third dimensions vertically to display a figure.

Previously, I had done it using vertcat and cat but I donot want it to be done manually, but, I want to concatenate each 3rd dimension matrix generated in a loop to be concatenated vertically.

[Image Analyst]

Explain why vercat and cat are manual and a for loop is not manual.