You could also use the grconvertX function to convert from the middle of the plotting region (from='npc') to user coordinates (to='user'), or many other combinations.
On Wed, Apr 25, 2012 at 5:53 AM, Ramon Ovelar <ramon.ove...@gmail.com> wrote: > Many many thanks for the tip and for authoring this function! > > The final code for the plot goes like this: > > par(mar=c(0, 17, 3, 0), oma=c(0, 0, 0, 0)) > barplot2(prueba, col=colores, horiz=TRUE,las=1, cex.names=.7) > mtext(l,side = 3, at = getFigCtr()[1], line = 0.8, cex=1.5) > > > > On Wed, Apr 25, 2012 at 12:51 PM, Jim Lemon <j...@bitwrit.com.au> wrote: > >> On 04/25/2012 12:28 AM, ramonovelar wrote: >> >>> Hello, >>> >>> I have a barplot where each row has quite long texts and I have used "par" >>> to make some room in the left: >>> par(mar=c(0, 17, 3, 0), oma=c(0, 0, 0, 0)) >>> barplot2(prueba, main = l, col=colores, horiz=TRUE,las=1, cex.names=.7) >>> >>> My problem is that main text appears justified to the plot. I want to put >>> it >>> in the middle of the image, and find a way to sort it out with mtex >>> >>> par(mar=c(0, 17, 3, 0), oma=c(0, 0, 0, 0)) >>> barplot2(prueba, col=colores, horiz=TRUE,las=1, cex.names=.7) >>> mtext(l,side = 3, at = -70, line = 0.8) >>> >>> But I will have to adjust this "at =-70" to his plot, depending on the >>> length of the title. I wonder if I can't find a way to place it in the >>> center. >>> >>> Hi Ramon, >> Have a look at the getFigCtr function in the plotrix package. This returns >> the center of the figure region by default, but can be adjusted to return >> different proportions of the figure region. >> >> Jim >> >> > > > -- > ================================== > Ramón Ovelar > > [[alternative HTML version deleted]] > > > ______________________________________________ > 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. > -- Gregory (Greg) L. Snow Ph.D. 538...@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.
