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Top Forums Shell Programming and Scripting awk fatal:division by zero attempted bypass with a condtion Post 302820375 by jacobs.smith on Wednesday 12th of June 2013 02:40:14 PM
Old 06-12-2013
Quote:
Originally Posted by Corona688
If your output is incorrect and my program is working:

Code:
$ awk '{ R=0; if($5) R=log($5/$6)/log(2); print $1,$2,$3,$4,$5,$6,$7,R }' OFS="\t" input
chr1    100     200     1234E-02        0.01    0.05    10      -2.32193
chr1    100     200     14E-11  0.11    0.50    1       -2.18442
chr1    100     200     134E-22 0.00    0.65    111     0

$

Thanks Corona688. You were right. My input was incorrect. Sorry for it. But, your code did work. I would also like to include the condition that if $6 is zero, do the same.
 

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GSL-RANDIST(1)						      General Commands Manual						    GSL-RANDIST(1)

NAME
gsl-randist - generate random samples from various distributions SYNOPSYS
gsl-randist seed n DIST param1 param2 [..] DESCRIPTION
gsl-randist is a demonstration program for the GNU Scientific Library. It generates n random samples from the distribution DIST using the distribution parameters param1, param2, ... EXAMPLE
Here is an example. We generate 10000 random samples from a Cauchy distribution with a width of 30 and histogram them over the range -100 to 100, using 200 bins. gsl-randist 0 10000 cauchy 30 | gsl-histogram -100 100 200 > histogram.dat A plot of the resulting histogram will show the familiar shape of the Cauchy distribution with fluctuations caused by the finite sample size. awk '{print $1, $3 ; print $2, $3}' histogram.dat | graph -T X SEE ALSO
gsl(3), gsl-histogram(1). AUTHOR
gsl-randist was written by James Theiler and Brian Gough. Copyright 1996-2000; for copying conditions see the GNU General Public Licence. This manual page was added by the Dirk Eddelbuettel <edd@debian.org>, the Debian GNU/Linux maintainer for GSL. GNU
GSL-RANDIST(1)
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