Public Domain Plotting Packages

[Bruce McKee]

Does anyone know of a decent public-domain plotting package for SUN
workstations?  Ideally one should plot to the SUN console, and be able to
create a POSTSCRIPT version of that same plot.  

I've heard about a National Weather Service package called NCAR that
allegedly ran on a VAX.  Has anyone ported it to a SUN?

Please post any leads to the net.  Thanks in advance!!!

-Bruce McKee
 Villanova University