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Selecting every other line from a data frame

To: <s-news@lists.biostat.wustl.edu>
Subject: Selecting every other line from a data frame
From: "Khan, Sohail" <khan@cshl.edu>
Date: Fri, 21 Apr 2006 11:45:40 -0400
Thread-index: AcZlWqRkpU1wCVj4Qq6EZVOGlkb9rA==
Thread-topic: Selecting every other line from a data frame
Dear All,

I have a large data frame, from which I want to only select every other line or 
odd lines.
How can I do this?  Thanks.


Sohail Khan
Scientific Programmer
COLD SPRING HARBOR LABORATORY
Genome Research Center
500 Sunnyside Boulevard
Woodbury, NY 11797
(516)422-4076


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