Maybe my question was not concise enough. I was referring to objects created with the "package "grid" (also called "grobs"), not to the function "grid" from package "graphics". For instance, let's say I have a polygon createad with grid::polygonGrob and want to mirror it along a specified axis. Of course one could transform the polygon's coordinates, but I was hoping that there is some more generic way of doing this (and that this could e.g. also be done with text grobs).
Cheers /thomas On Tuesday 22 May 2012, Rui Barradas wrote: > Hello, > > Just flip 'xlim' or 'ylim'. Or both. > Using the iris example in help("grid"), make the following changes: > > > op <- par(mfcol = c(2,2)) # Two columns, first is the original, second > flipped. > > with(iris, > > [... etc ...] > # row 1, col 2: flip x axis > plot(Sepal.Length, Sepal.Width, col = as.integer(Species), > xlim = c(8, 4), ylim = c(2, 4.5), panel.first = grid(), > main = "with(iris, plot(...., panel.first = grid(), ..) )") > # row 2, col 2: flip y axis > plot(Sepal.Length, Sepal.Width, col = as.integer(Species), > xlim = c(4, 8), ylim = c(4.5, 2), > panel.first = grid(3, lty=1,lwd=2), > main = "... panel.first = grid(3, lty=1,lwd=2), ..") > > [... etc ...] > ) > par(op) > > > Hope this helps, > > Rui Barradas > > Thomas Zumbrunn-3 wrote > > > Hi everyone > > > > I'd like to flip grobs (grid graphical objects) along an axis, e.g. flip > > grobs > > horizontally or vertically. I couldn't find any hints, neither in the > > documentation nor by searching the web. Does anybody know how to achieve > > this? > > > > Cheers > > /thomas > > > > ______________________________________________ > > R-help@ 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. > > -- > View this message in context: > http://r.789695.n4.nabble.com/package-grid-mirror-grob-objects-along-an-ax > is-tp4630866p4630870.html Sent from the R help mailing list archive at > Nabble.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. -- Thomas Zumbrunn, PhD Clinical Trial Unit (CTU) Universitätsspital Basel Schanzenstr. 55, CH-4031 Basel Tel +41 (0)61 556 52 92 Fax +41 (0)61 265 94 10 http://www.clinicaltrialunit.ch/ ______________________________________________ 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.