function to find relations

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huda nawaf
huda nawaf 2012-7-14
hi,
I have some clusters of users, I need to find intersections among the clusters. i.e is x=no. of users y=no. of users
what I need is x ∩ y=z
z is the no. of users in both clusters x and y
can I find a function do that?
many thanks in advance

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Image Analyst
Image Analyst 2012-7-14
Did you look at functions like intersect() and ismember()?

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