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Full Discussion: Calculating average for every Nth line in the Nth column
Top Forums Shell Programming and Scripting Calculating average for every Nth line in the Nth column Post 302622493 by ncwxpanther on Thursday 12th of April 2012 08:17:14 AM
Old 04-12-2012
Calculating average for every Nth line in the Nth column
Is there an awk script that can easily perform the following operation?

I have a data file that is in the format of
Code:
1944-12,5.6
1945-01,9.8
1945-02,6.7
1945-03,9.3
1945-04,5.9
1945-05,0.7
1945-06,0.0
1945-07,0.0
1945-08,0.0
1945-09,0.0
1945-10,0.2
1945-11,10.5
1945-12,22.3
1946-01,35.2
1946-02,13.4

I need to find the average of the values contained within -01, -02, and -03.

For instance the average of
Code:
1945-01,9.8
1945-02,6.7
1945-03,9.3

Would output
Code:
1945-03, 8.6

Any help would be appreciative.
Thanks!
Last edited by Franklin52; 04-12-2012 at 09:18 AM.. Reason: Please use code tags for code and data samples, thank you
 

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qhttpresponseheader

QHttpResponseHeader(3qt)												  QHttpResponseHeader(3qt)

NAME

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SYNOPSIS

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DESCRIPTION

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QString QHttpResponseHeader::reasonPhrase () const
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Trolltech AS							  2 February 2007					  QHttpResponseHeader(3qt)
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