On Tue, 2011-08-16 at 17:46 -0700, ivo welch wrote: > I think I found a bug in the Cairo library, plus weird behavior in > both the Cairo and the normal pdf device. The baseline of the spades > symbol seems to be off. This is easier to show than it is to explain. > The problem does not appear in the normal pdf device, which is why I > am guessing this is a Cairo bug. moreover, I cannot figure out why > three of the card symbols seem to be transparent, but the fourth is > not. this is the case for both the Cairo and the ordinary pdf > devices. > > I thought I would report it to the R wizards on this group...
Why? One is expressly asked to address such problems with the package maintainer(s), especially if you feel there is a bug in the package. And whilst Martin M is potentially indisposed at UseR! 2011, I will mention that it is a *package* not a library when you refer to the R package Cario. If you had identified a bug in the Cairo *library* you should be reporting it upstream to the Cairo people: http://www.cairographics.org/ G > library(Cairo) > > clubs <- expression(symbol('\247')) > hearts <- expression(symbol('\250')) > diamonds <- expression(symbol('\251')) > spades <- expression(symbol('\252')) > csymbols <- c(clubs, diamonds, hearts, spades) > > CairoPDF(file = "cardsymbols.pdf") > > plot( 0, xlim=c(0,5), ylim=c(0,2), type="n" ) > clr <- c("black", "red", "red", "black") > for (i in 1:4) { > hline <- function( yloc, ... ) for (i in 1:length(yloc)) lines( > c(-1,6), c(yloc[i],yloc[i]), col="gray") > hline(0.9); hline(1.0); hline(1.1); hline(1.2) > text( i, 1, csymbols[i], col=clr[i], cex=5 ) > text( i, 0.5, csymbols[i], col=clr[i] ) > } > > dev.off() > > > > ---- > Ivo Welch (ivo.we...@gmail.com) > > ______________________________________________ > 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. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ 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.