Writing graphics code (was: [R] get vector data from contour)
Hi ----- Original Message ----- From: Duncan Murdoch <murdoch@stats.uwo.ca> To: <r-devel@stat.math.ethz.ch> Sent: Thursday, February 08, 2001 6:51 AM Subject: [Rd] Re: Writing graphics code (was: [R] get vector data from contour)
I submitted a message to r-help this morning that really belongs in r-devel; here's its URL in the archive: <http://www.r-project.org/nocvs/mail/r-help/2001/0693.html>. In summary, I suggest that R graphics objects should be accessible and modifiable, but it raises some problems if you want to do it without pointers.
I have been doing some similar stuff to what you describe (primitives and groups arranged in hierarchies), but for 2D graphics, and I have used Luke Tierney's "external pointers" to provide access to graphical objects which represent the graphical output. See the R developer page http://developer.r-project.org/ for Luke's stuff, but please note the disclaimer at the top of that page. Paul -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._