GnuplotIF version 1.8
=====================

GnuplotIF is a simple and easy to use Perl interface to gnuplot.  gnuplot is a
freely available, command-driven graphical display tool for Unix.  It compiles
and works quite well on a number of Unix flavours as well as other operating
systems. The following module enables sending display requests to gnuplot
through simple Perl subroutine calls.

GnuplotIF starts gnuplot as a separate process. The plot commands are send
through a pipe.  The graphical output from gnuplot will be displayed
immediately.

Several independent plots can be started from one script.  Each plot has its
own pipe.  All pipes will be closed automatically when the script terminates.
The gnuplot processes terminate when the corresponding pipes are closed.  Their
graphical output will now disappear.

GnuplotIF is similar to gnuplot_i , a C interface to gnuplot 
( http://ndevilla.free.fr/gnuplot/ ), and to  gnuplot_i++ , a C++ interface
to gnuplot ( http://jijo.cjb.net/code/cc++ ).


INSTALLATION

To install this module type the following:

   perl Makefile.PL
   make
   make test
   make install

DEPENDENCIES

This module requires these other modules and libraries:

  gnuplot ( http://sourceforge.net/projects/gnuplot ) must be installed. 

  The module IO::Handle is used to handle output pipes.
  Your operating system must support pipes, of course.

  The environment variable DISPLAY is checked for the display.

COPYRIGHT AND LICENCE

  Copyright (C) 2005-2016 by Fritz Mehner

  This module is free software; you can redistribute it and/or modify it under
  the same terms as Perl itself. See perlartistic.  This program is distributed
  in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.