Splitting a list based on another list values in Mathematica

Posted by Max on Stack Overflow See other posts from Stack Overflow or by Max
Published on 2010-04-22T23:16:25Z Indexed on 2010/04/22 23:23 UTC
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In Mathematica I have a list of point coordinates

size = 50;
points = Table[{RandomInteger[{0, size}], RandomInteger[{0, size}]}, {i, 1, n}];

and a list of cluster indices these points belong to

clusterIndices = {1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1};

what is the easiest way to split the points into two separate lists based on the clusterIndices values?

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