A trick here is to use the string ':' as an element in a cell array that you can pass in as a comma-separated list.
Simple example:
c = {':',3} % all elements, third column
x = magic(5)
x(c{:})
(This is an advanced manuever)
% Build a random rand-d matrix
k = randi(5)+3;
sz = randperm(8,k);
Z = rand(sz);
nd = numel(sz);
% Some function
do_something_with = @size; % size is just an example
for ii = 1:numel(sz)
% loop over dimensions
% build cell array with only iith dimension having values, everything else ':'
traverse = repmat({':'},1,nd);
for kk = 1:sz(ii)
% loop over the iith dimension
traverse{ii} = kk;
do_something_with(Z(traverse{:}))
end
end
