'pgperl' is a version of the Perl language which has available
the PGPLOT FORTRAN library, a very popular package for plotting
astronomical data. (As a glance through any issue of ApJ or MNRAS will
confirm.) The details of this involve some complicated C glue routines
but are transparent to the user.

See the file LICENSE in /usr/local/share/doc/pgperl for copyright/licensing
information and the file pgperl.doc on how to use pgplot from perl.
This is also similar documentation on the pgperl WWW Home Page at:

WWW: http://www.aao.gov.au/local/www/kgb/pgperl/

Karl Glazebrook, 
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kgb@ast.cam.ac.uk  Institute of Astronomy, Cambridge, U.K.