On Wed, Oct 6, 2010 at 11:04 AM, Michael Bedward <michael.bedw...@gmail.com> wrote: > On 6 October 2010 20:51, Ivan Calandra <ivan.calan...@uni-hamburg.de> wrote: >> >> Moreover, Josh wanted the arrow to be really big. Is it possible to make >> it bigger? I would be interested too! >> > > Sorry - missed that bit. You can use the cex argument of the mtext > function to make the symbol bigger. >
And you might also need 'line=' to shift it down a bit once it starts growing. If all else fails, use arrows() - but that might get tricky... > plot(1:10) > par(xpd=NA) # dont clip to the plot > arrows(5,0,5,1) You could use various other par() options to get the position of the axis... > plot(2:20) > par(xpd=NA) > arrows(7,par()$usr[3]-3,7,par()$usr[3],lwd=2) Barry ______________________________________________ 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.