Peter, not all devices support transparency. My guess is that you are plotting to a device which does not, but it is hard to know from your email.
Kasper On Mon, Feb 20, 2012 at 6:09 AM, Peter Ruckdeschel <peter.ruckdesc...@itwm.fraunhofer.de> wrote: > Maybe I am missing something, but according to the help page > to par (section "Color Specification"), which is referred to in the > help to text argument col: > > β"transparent"β or (integer) βNAβ is _transparent_, > useful for filled areas (such as the background!), and just > invisible for things like lines or text. > > but: > > col0 <- as.integer(NA) > is.integer(col0) > ### is this coercing to "integer" necessary? > plot(1:10) > text(1:10, col=col0) > ### text is plotted > > ##whereas > plot(1:10) > text(1:10, col="transparent") > ### text is not plotted > > # Of course, this is not terribly urgent, as a color value of 0 also > plot(1:10) > text(1:10, col=0) > ### text is not plotted > > Best, Peter > > ______________________________________________ > 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
