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gsl-histogram - compute histogram of data on stdin
gsl-histogram
xmin xmax [n]
gsl-histogram is a demonstration program for the
GNU Scientific Library. It takes three arguments, specifying the upper and
lower bounds of the histogram and the number of bins. It then reads numbers
from ‘stdin’, one line at a time, and adds them to the histogram. When there
is no more data to read it prints out the accumulated histogram using gsl_histogram_fprintf.
If n is unspecified then bins of integer width are used.
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
gsl(3)
, gsl-randist(1)
.
gsl-histogram was written by 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.
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