Thanks for the further tips! I'll look at the R Internals manual, the other built-in devices, and the RSvgDevice package. And I'm still looking for the S source code, but I have a feeling that I'll wind up writing the device before I find the source code.
> It may be useful to look at existing interfaces to an HPGL device in other > graphics applications. One such application is xgraph and here is the C code > for one implementation: > > http://xgraph.sourcearchive.com/documentation/12.1-3/hpgl_8c-source.html > > The other option might be to enlist an external program such as GNUPLOT that > has an HPGL output and use it as a driver to which you send an image in a > file format that R can produce. While this would be a good idea for pretty much any other file format, it probably will make things more complicated for HPGL as the structure of base R graphics is kind of exactly the same as HPGL. Tom ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
