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GSL-HISTOGRAM(1)       DragonFly 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

       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.

GNU                                                           GSL-HISTOGRAM(1)

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