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Full Discussion: Awk based script to find the median of all individual columns in a data file
Top Forums Shell Programming and Scripting Awk based script to find the median of all individual columns in a data file Post 302653407 by ks_reddy on Saturday 9th of June 2012 07:19:52 AM
Old 06-09-2012
The output computation is shown below.
Hi Corona,

Thanks for the reply.
For the input of
Step1,Param1,Param2,Param3 1,2,3,4 2,3,4,5 2,4,5,6 3,0,1,2 3,0,0,0 3,2,1,3
The output is computed like below.
In 1st column(Step1), for the data sample '1' the median for 2,3,4 columns are 2,3,4 itself (as the columns has only one value(odd number).
Similarly for the data sample '2' (repeated twice) the median is (3+4)/2, (4+5)/2, (5+6)/2 which is nothing but 3.5,4.5,5.5.
Similarly for the data sample '3' (repeated thrice) the median for 2,3,4 columns are 0,1,2 as the total number samples in each column(2,3,4) are 3. ( So when we sort each column the values are like this {0,0,2}, {0,1,1}, {0,2,3} so the median for each set is 0,1,2 respectively).
So the final output will be
2,3,4 # Median of columns 2,3,4 when 1st col rows=='1' 3.5,4.5,5.5 #Median of columns 2,3,4 when 1st col rows =='2' 0,1,2 #Median of columns 2,3,4 when 1st col rows=='3'
# So my result is nothing for median of columns 2,3,4 for each unique set of row values in column1.


I hope the median computation is clearly explained now.
Have a look and let me know.

Regards
Sid

---------- Post updated at 04:49 PM ---------- Previous update was at 05:38 AM ----------

Hi Binlib,

Your code is perfect except for two missing ';'s (semicolons),
one after the statement " a[i][NR] = $i "
and one more after the statement " asort(a[i]) "

Thanks a lot for your effort.

Sidda
 

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LEARN ABOUT DEBIAN

smokeping_sorters_median

..::lib::Smokeping::sorters::Median(3)				     SmokePing				    ..::lib::Smokeping::sorters::Median(3)

NAME

       Smokeping::sorters::Median - Order the target charts by Median RTT

OVERVIEW

       Find the charts with the highest Median round trip time.

DESCRIPTION

       Call the sorter in the charts section of the config file

	+ charts
	 menu = Charts
	 title = The most interesting destinations

	++ median
	 sorter = Median(entries=>10)
	 title = Top Median round trip time
	 menu = Median RTT
	 format = Median round trip time %f seconds

COPYRIGHT

       Copyright (c) 2007 by OETIKER+PARTNER AG. All rights reserved.

LICENSE

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

AUTHOR

       Tobias Oetiker <tobi@oetiker.ch>

2.6.8								    2012-02-26				    ..::lib::Smokeping::sorters::Median(3)
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