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[S] another challenge

To: s-news@wubios.wustl.edu
Subject: [S] another challenge
From: Robert Anthony Canales <rcanales@leland.stanford.edu>
Date: Thu, 23 Sep 1999 17:18:18 -0700 (PDT)
Sender: owner-s-news@wubios.wustl.edu
Hello,
        I've got another challenge for the user group.  I have a file of
sequential simultaneous events (1,2,3) with the duration (in seconds) for
these simultaneous occurrences. The files range from 2 hours to 8 hours
and I need to run statistics on segments of 15 min.  So I need to cut the
file into segments of 15 minutes based on the duration column.  I am
attempting to write a function that uses the value of the cumulative sum
of the duration column, but this seems very inefficient and requires
coding for several conditions for breaking files if a cut off point occurs
between or on a duration value.


For example, a file may appear as:

event1  event2  event3  duration 
  A       X       L       333 
  A       Y       L       250
  A       X       M       507
  B       X       L       100 
...

and we would want it to be segmented into:

A       X       L       333
A       Y       L       250
A       X       M       317

and

A       X       M       190
B       X       L       100
...

any help/hints are appreciated..thanks
Robert

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