How can I extract all matrix elements for one index with dynamic number of dimenstions?

Hello experts,

let A be

A = rand(4, 4, 4); % 

so what I want is:

B = reshape(A(1,:,:), [4 4])

The problem is the unknown dimension of A. So if A has the dimension of 3, I need 2 colon operator; if 4 then 3 and so on...

I am very thankful for any ideas...

BR

Answer 1

[Andrei Bobrov]

ii = repmat({':'},1,ndims(A)-1);
out = squeeze(A(1,ii{:}));

[Philipp]

Genius!!! THX