p.dalgaard@biostat.ku.dk
2000-Aug-02 12:55 UTC
[Rd] Re: [R] problem clipping R postscript plots within latex (PR#623)
Martin Maechler <maechler@stat.math.ethz.ch> writes:> (from R-help) > PD> Stephen Eglen <stephen@cogsci.ed.ac.uk> writes: > > > > > generated by R into a latex document. Specifically, the latex package > > > > graphicsx allow you to specify the bounding box of the postscript > > > > file, so that you can just show _part_ of the postscript file if you > > > > tell it to also clip the area outside of the bounding box. > > ... > > > Ow. This stems from the use of "initclip" in the R-generated PS. One > > > shouldn't do that, one should bracket clipped graphics within > > > gsave/grestore instead. Sounds a bit tricky to get right. > > > > Thanks. To solve my current problem, I changed the definition of the > > `cl' operator in the postscript file to: > > > > /cl { gsave initclip newpath 3 index 3 index moveto 1 index > > 4 -1 roll lineto exch 1 index lineto lineto > > closepath clip grestore newpath } def > > > > [i.e. just adding the gsave ... grestore pair] > > > > Whether this is the proper solution though is another matter... > > PD> It isn't. It grestore-s before actually plotting the stuff that > PD> needs to be clipped, so effectively you just disabled R's > PD> clipping. A better way would be to start the plotting with a "gs" > PD> and have > > /cl { gr gs newpath 3 index 3 index moveto 1 index > 4 -1 roll lineto exch 1 index lineto lineto > closepath clip newpath } def > > PD> and end everything with a "gr". Not too sure that is perfectly > PD> safe, though... > > Are you working on this, Peter? > Otherwise, "R-bugs" should probably get about the above report..Done... -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk) FAX: (+45) 35327907 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Prof Brian D Ripley
2000-Aug-02 20:38 UTC
[Rd] Re: [R] problem clipping R postscript plots within latex (PR#623)
On Wed, 2 Aug 2000 p.dalgaard@biostat.ku.dk wrote:> Martin Maechler <maechler@stat.math.ethz.ch> writes: > > > (from R-help) > > PD> Stephen Eglen <stephen@cogsci.ed.ac.uk> writes: > > > > > > > generated by R into a latex document. Specifically, the latex package > > > > > graphicsx allow you to specify the bounding box of the postscript > > > > > file, so that you can just show _part_ of the postscript file if you > > > > > tell it to also clip the area outside of the bounding box. > > > ... > > > > Ow. This stems from the use of "initclip" in the R-generated PS. One > > > > shouldn't do that, one should bracket clipped graphics within > > > > gsave/grestore instead. Sounds a bit tricky to get right. > > > > > > Thanks. To solve my current problem, I changed the definition of the > > > `cl' operator in the postscript file to: > > > > > > /cl { gsave initclip newpath 3 index 3 index moveto 1 index > > > 4 -1 roll lineto exch 1 index lineto lineto > > > closepath clip grestore newpath } def > > > > > > [i.e. just adding the gsave ... grestore pair] > > > > > > Whether this is the proper solution though is another matter... > > > > PD> It isn't. It grestore-s before actually plotting the stuff that > > PD> needs to be clipped, so effectively you just disabled R's > > PD> clipping. A better way would be to start the plotting with a "gs" > > PD> and have > > > > /cl { gr gs newpath 3 index 3 index moveto 1 index > > 4 -1 roll lineto exch 1 index lineto lineto > > closepath clip newpath } def > > > > PD> and end everything with a "gr". Not too sure that is perfectly > > PD> safe, though... > > > > Are you working on this, Peter? > > Otherwise, "R-bugs" should probably get about the above report.. > > Done...Just to note that ?postscript says The postscript produced by R is EPS (Encapsulated PostScript) compatible, yet initclip is not allowed in EPS files (PostScript Language Reference Manual, 2nd edition). I think the statement was possibly true once .... -- Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._