Man Linux: Main Page and Category List


       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 >

       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 <>,
       the Debian GNU/Linux maintainer for GSL.