There is also some funny business with find on an 'all false' matrix, the behavior of find(0) seems inconsistent.
>> [x y] = meshgrid(0:2,0:2)
x =
0 1 2
0 1 2
0 1 2
y =
0 0 0
1 1 1
2 2 2
>> x=num2cell(x)
x =
[0] [1] [2]
[0] [1] [2]
[0] [1] [2]
>> y = num2cell(y)
y =
[0] [0] [0]
[1] [1] [1]
[2] [2] [2]
>> cellfun(@(z,w) find(zeros(z,w)), y, x, 'UniformOutput', false)
ans =
[] [0x1 double] [0x1 double]
[1x0 double] [] [1x0 double]
[0x1 double] [0x1 double] [0x1 double]
