...It allows command line applications written in ObjC, C, FORTRAN, Lisp, Perl or Python to display vector graphics, text and images using a simple API. Adapters for gnuplot, PGPLOT, and PLplot exists as well.
A device handler for the PGPLOT Graphics Subroutine Library by T. J. Pearson that draws to a Qt widget and responds to Qt events. The package includes an installation script for inserting the driver into an existing PGPLOT distribution.