MATLAB: Isempty

isempty

Hello, could anyone point out how to check a empty set?
I try isempty, seems wrong
 a = [1 3 2]
a =
       1     3     2
K>> b = [1 3 2]
b =
       1     3     2
K>> d  = setdiff(a, b)
d =
     Empty matrix: 1-by-0
K>> isempty(d)
ans =
     Empty matrix: 1-by-0

Best Answer

Problem seems to have been resolved (see above comments), but for the record:
isempty(x)
Another possibility would be
~numel(x)
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