Sorry, It appears ,as usual, that I've been an idiot. Turns out you need to use the Cairo command from the package cairoDevice instead of the package Cairo, ie:
> Cairo_pdf(filename, width = 7, height = 7, pointsize = 10) Which seems to work ok.... Sorry for any time I wasted Dan Daniel Alcock Malaria Genetics (T112) Wellcome Trust Sanger Institute Cambridge CB10 1SA UK +44 (0)1223 834244 ext. 4994 "The most exciting phrase to hear in science, the one that heralds new discoveries, is not Eureka! But rather, "hmm.... that's funny...." -- Isaac Asimov -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Daniel Alcock Sent: 27 April 2010 15:48 To: r-help@r-project.org Subject: [R] Cairo package failure to load backend Hi R friends, I've been attempting to create plots with multiple alpha values using Cairo to save them on a windows (32b XP) platform as it doesn't support more than 3 alpha values. This worked well until I wanted a postscript file (unsupported) and as a attempted work around I installed RGtk2. So far so good, however now when I try to use a >CairoPDF("alpha.pdf", 6, 6, bg="transparent") Or any >Cairo(....) Or >CairoXXX(...) Command I get (variations of): >Error in Cairo(width, height, file, "pdf", pointsize = pointsize, bg = bg, : Failed to create Cairo backend! Can someone suggest a reason/solution please Cheers Dan Daniel Alcock Malaria Genetics (T112) Wellcome Trust Sanger Institute Cambridge CB10 1SA UK +44 (0)1223 834244 ext. 4994 "The most exciting phrase to hear in science, the one that heralds new discoveries, is not Eureka! But rather, "hmm.... that's funny...." -- Isaac Asimov -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE. ______________________________________________ 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. -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE. ______________________________________________ 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.
