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Message-ID: <1394260557.10351468.1345142964857.JavaMail.root@neo.tamu.edu>
Date: 2012-08-16T18:49:24Z
From: Schumacher, Jay S
Subject: r data structures

hi,
  i'm trying to understand r data structures.  i see that vectors, matrix, factors and arrays have a "dimension."
  there seems to be no mention of dimensionality anywhere for lists or dataframes.  can i consider lists and frames to be of fixed dimension 2?
thanks,
 jay s