snaptrak                          Track centroids of specified groups

  in=???                          Input snapshot file name

  out=???                         Output snapshot file name

  group=???                       Expression for group membership

  times=all                       Range of times to process

  seed=                           Seed for random number generator

  VERSION=2.1                     Josh Barnes  12 April 2011

Joshua E. Barnes      (barnes at
Created: 14 June 2012
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