I use p9p to create plots in the usual plan9 way, and I can view them with proof.
For example in p9p, 9 grap plotfile | 9 pic | 9 troff -mm |proof produces the expected plot result. But, I have not been able to find gs or other translator to use to print the result on my HP PCL 3 printer (HP J6480). The OS is OSX 10.6.8 on a MacBookPro. Any help much appreciated. -Tom
