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Top Forums Shell Programming and Scripting Average of a columns from three files Post 303002733 by nans on Thursday 31st of August 2017 09:33:55 AM
Old 08-31-2017
Average of a columns from three files

hello, I have three files in the following order
Code:
==> File1 <==
1    20977000    20977000    A    C    1.00    0,15    15    45
1    115829313    115829313    G    A    0.500    6,7    13    99

==> File2 <==
1    20977000    20977000    A    C    1.00    0,13    13    39
1    115829313    115829313    G    A    0.500    7,7    14    99

==> File3 <==
1    20977000    20977000    A    C    1.00    0,16    16    48
1    115829313    115829313    G    A    0.500    7,10    17    99

I need to take the average of the 8th column from each file and output the average to the first file. So the results should look like

Code:
==> Results <==
1    20977000    20977000    A    C    1.00    0,15    15    45 14.6667
1    115829313    115829313    G    A    0.500    6,7    13    99 14.6667

I am able to calculate the average with this
Code:
awk '{a[FNR]=a[FNR]+$8;b[FNR]++;}END{for(i in a){print i,a[i]/b[i]}}' *.txt

but not able to write it into the first file. Any suggestions ?
 

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KDIFF3(1)						      General Commands Manual							 KDIFF3(1)

NAME
KDiff3 -- compares two or three input files or directories SYNOPSIS
KDiff3 [QT options] [KDE options] [KDiff3 options] [File1/base] [File2] [File3] DESCRIPTION
This manual page documents briefly the KDiff3 tool. This manual page was written for the Debian distribution because the original program does not have a manual page. For comprehensive help, please see khelpcenter help:/kdiff3. KDiff3 is a program that o compares or merges two or three text input files or directories o shows the differences line by line and character by character o provides an automatic merge-facility and o an integrated editor for comfortable solving of merge-conflicts o supports Unicode, UTF-8 and other codecs o supports KIO on KDE (allows accessing ftp, sftp, fish, smb etc.) o Printing of differences o Manual alignment of lines o Automatic merging of version control history ($Log$) OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. For a full summary of options, run KDiff3 --help. -m, --merge Merge the input. -b, --base file Explicit base file. For compatibility with certain tools. -o, --output file Output file. Implies -m. E.g.: -o newfile.txt --out file Output file, again. (For compatibility with certain tools.) --auto No GUI if all conflicts are auto-solvable. (Needs -o file) --qall Don't solve conflicts automatically. (For compatibility...) -L1 alias Visible name replacement for first file/base file. -L2 alias Visible name replacement for second file. -L3 alias Visible name replacement for third file. -L, --fname alias Visible name replacement. May by supplied for each input. --cs string Change a setting, e. g. --cs "AutoAdvance=1". --confighelp Show a list of all settings and their values. --config file Use a different settings file. --author Show author of program. -v, --version Show version of program. --license Show license of program. AUTHOR
This manual page was written by Eike Sauer <eike@debian.org> for the Debian system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 (or, at your option, any later version published by the Free Software Foundation). On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL. KDIFF3(1)
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