Nothing in Rbugs or Rhelp on this that I could see: [Redhat 7.3 (Intel); R 1.6.2] R Postscript output contains a bunch of the following commands: nan setlinewidth And GNU Ghostscript 6.52 chokes with: Error: /undefined in nan Operand stack: ... The figure is a fairly complex directed graph with varying linewidths. I am able to write the figure to the x11 and xfig devices just fine from within R, and even export to EPS from xfig with no problems. So it seems like a bug in the R postscript driver. Anyone else see this? -- ______________________________________________________ Neil E. Klepeis, UC Berkeley, School of Public Health, Berkeley, CA USA. --- The most beautiful thing we can experience is the mysterious. It is the source of all true art and science. --Einstein