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GSL-HISTOGRAM
Section: User Commands (1)Updated:
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NAME
gsl-histogram - compute histogram of data on stdinSYNOPSYS
gsl-histogram xmin xmax [n]DESCRIPTION
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.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-randist(1).AUTHOR
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.