Save the elements of different pages of a matrix in a vector

I have a matrix Z 6x100x6 and I would like to store all the elements from the 6th and the 100th column them in vector. So I do

B=(6,100,:)

Matlab the generates again a multidimensional matrix 1x1x6. instead of vector 1x6. Whereas

B=(6,:,1)

will return a vector 1x100 with 100 elements of the first row of the first page. What I am I doing wrong? Thank you

Answer 1

[Jan]

A trailing dimension of the length 1 is automatically omitted by Matlab. But otherwise the number of dimensions is kept, and this is the expected behavior.

B = squeeze(Z(6, 100, :));

or

B = reshape(Z(6, 100, :), 1, []);

or explicitely

B = reshape(Z(6, 100, :), 1, size(Z, 3));

Try this:

size(zeros(1,1,10))    % >> 1, 1, 10
size(zeros(1,1,10,1))  % >> 1, 1, 10 also!

Answer 2

[Wayne King]

Use squeeze()

    A = randn(6,100,6);
    B = squeeze(A(6,:,1));

Answer 3

[Giorgos Papakonstantinou]

Thank you very much for the immediate answers. Both worked.