Duncan Murdoch wrote: > On 1/31/2007 8:49 AM, Prof Brian Ripley wrote: >> On Wed, 31 Jan 2007, Duncan Murdoch wrote: >> >>> On 1/30/2007 8:50 PM, jtxx000 wrote: >>>> Greetings all, >>>> PGF is a package for LaTeX which works with both ps >>>> and pdf output without any nasty hacks like pictex. >>>> Is there any technical reason why there could not be a >>>> PGF graphic device for R? If not, I'm going to try to >>>> throw one together. Any tips for getting started? >>> The existing drivers are in the grDevices package. I would start with >>> one of those (the picTeX driver would probably be most similar) and go >>> from there. Alternatively, start from devNULL.c and fill in the blanks. >> Please don't start from pictex (it is only half implemented, including no >> real font metrics). If you need Type1 fonts, I suggest you start from the >> postscript/PDF driver. >> >>> Someone else may be able to offer advice about whether you should be >>> targetting this to be your own package, or for inclusion in the R >>> source. In the past it's been impossible to create a driver in a >>> package, and there's been talk about adding enough to the API to allow >>> this, but I don't know whether that's in place yet. >> There are several devices in packages, and this has been possible since at >> least R 1.4.0 (from 2001). There used to be gtkDevice (still on CRAN, but >> old Gtk), GNOMEdevice (never finished) and an SVG driver >> (http://www.darkridge.com/~jake/RSvg/), and there are now cairoDevice on >> CRAN, the quartz device in the R.app front-end, and others. > > Yes, I must have been thinking about connections. Just for the record, > is it possible to create a new connection type in a package?
No, but it's been proposed: http://wiki.r-project.org/rwiki/doku.php?id=developers:r_connections_api Comments are much appreciated. Jeff > > Duncan Murdoch > >> Paul Murrell used to have a list of known graphics devices, but I was >> unable to locate it quickly. >> >> I've written several devices, including pdf(), xfig() and versions of >> png() etc. The hard part is getting text and font metrics working: also >> nowadays you need to be prepared to handle UTF-8 text and CJK locales, >> which many graphic systems are not up to speed on (including postscript, >> pdf and latex). >> > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
