I don't believe you can do this with the dimension validation alone. Nor would the existing validation functions help. So you're going to need to write your own, which I've done below as mustHaveTwoOrThreeRows. These first two cases work:
sample1674659(ones(2, 3))
sample1674659(ones(3, 3))
Specifying an input with the wrong number of rows will error, as will specifying an N-dimensional array (N > 2) (because of the dimension validation.)
try
sample1674659(ones(4, 3))
catch ME
fprintf("This case threw the error:\n\n%s\n", ME.message)
end
try
sample1674659(ones(2, 3, 4))
catch ME
fprintf("This case threw the error:\n\n%s\n", ME.message)
end
function y = sample1674659(x)
arguments
x (:, :) {mustHaveTwoOrThreeRows(x)}
end
y = sum(x, 'all');
end
function mustHaveTwoOrThreeRows(x)
s = size(x, 1);
if ~(s == 2 || s == 3)
error('X must have either two or three rows.');
end
end
