gsl-histogram - Online in the Cloud

PROGRAM:

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

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