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I have a cell cliques=cell(n,1) where each cell 
Subject: vectorize intersect with cells? From: Bruno Luong Date: 9 Mar, 2009 07:56:01 Message: 2 of 13 
HenryW <hwolkowicz@uwaterloo.ca> wrote in message <18230588.1236560716722.JavaMail.jakarta@nitrogen.mathforum.org>... 
HenryW wrote: 
HenryW wrote: 
Subject: vectorize intersect with cells? From: Bruno Luong Date: 9 Mar, 2009 10:33:30 Message: 5 of 13 
Here is one way, complicated but should be much faster at the run 
Subject: vectorize intersect with cells? From: Bruno Luong Date: 9 Mar, 2009 15:26:02 Message: 6 of 13 
% More compact code: 
Subject: vectorize intersect with cells? From: Roger Stafford Date: 9 Mar, 2009 16:11:01 Message: 7 of 13 
HenryW <hwolkowicz@uwaterloo.ca> wrote in message <18230588.1236560716722.JavaMail.jakarta@nitrogen.mathforum.org>... 
The values of n are typically from 2000 upwards; often 10,000. But, we are hoping to solve some very large problems and this is a preliminary preprocessing step. 
Subject: vectorize intersect with cells? From: Bruno Luong Date: 9 Mar, 2009 17:50:02 Message: 9 of 13 
Great algo from Roger, very quick using binary sparse matrix to store setelement relationship. Here is the algo, slightly modified to give the same result as the original one, and vectorized two foroops: 
Subject: vectorize intersect with cells? From: Bruno Luong Date: 9 Mar, 2009 20:09:01 Message: 10 of 13 
% Somehow shorter 
Subject: vectorize intersect with cells? From: Roger Stafford Date: 9 Mar, 2009 20:36:01 Message: 11 of 13 
"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message <gp3ksa$aak$1@fred.mathworks.com>... 
Rogers algorithm was really fast  thanks!! 
Subject: vectorize intersect with cells? From: Bruno Luong Date: 9 Mar, 2009 21:18:01 Message: 13 of 13 
"Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid> wrote in message <gp3ujh$9k3$1@fred.mathworks.com>... 
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