GSL-HISTOGRAM(1) | General Commands Manual | GSL-HISTOGRAM(1) |

# 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

# 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**.

GNU |