### gsl-histogram (1)

#### Leading comments

Man page contributed by Dirk Eddelbuettel <edd@debian.org> and released under the GNU General Public License

#### NAME

gsl-histogram - compute histogram of data on stdin#### SYNOPSYS

**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**.