3D array to a column

Suppose we have an 3D-array r=ones(m,n,k). How to make a column of all the values of "r" in the following form? example,

for r=ones(2,2,2)
the desired table should look like:
       A=   [r(1,1,1),
            r(2,1,1),
            r(1,2,1),
            r(2,2,1),
            r(1,1,2),
            r(2,1,2),
            etc, ..] .

X-grid number changes first, then changes Y-grid number, and Z-grid number is "the weakest".

Answer 1

[Stephen23]

Using this test matrix we can show how to rearrange into a column:

>> r = reshape(1:8,2,2,2)
r =
ans(:,:,1) =
   1   3
   2   4
ans(:,:,2) =
   5   7
   6   8

you want either

>> r(:)
ans =
   1
   2
   3
   4
   5
   6
   7
   8

or

 >> reshape(permute(r,[2,1,3]),[],1)
 ans =
   1
   3
   2
   4
   5
   7
   6
   8