Here is a thread that might help.
http://groups.google.com/group/ggplot2/browse_thread/thread/7f4238b5658e85bb/25d4cfb6215b7544?lnk=gst&q=circle+size#25d4cfb6215b7544
On Tuesday, May 10, 2011 at 12:15 PM, Alaios wrote:
> Here you are :)
>
>
> plot_shad_f<-function(f){
> library(ggplot2)
> dev.new()
> plotdata<-melt(f)
> names(plotdata)<-c('x','y','z')
> v<-ggplot(plotdata, aes(x, y, z = z))
> print(v + geom_tile(aes(fill=z)))
>
> }
>
>
> f<-matrix(data=seq(1:10000),nrow=100,ncol=100)
> plot_shad_f(f)
>
>
> I would like to add a circle at the middle of this region with a range of 10.
>
> Best Regards
>
> Alex
>
> --- On Tue, 5/10/11, Scott Chamberlain <scttchamberla...@gmail.com> wrote:
> >
> > From: Scott Chamberlain <scttchamberla...@gmail.com>
> > Subject: Re: [R] ggplot2 and add circle
> > To: "Alaios" <ala...@yahoo.com>
> > Cc: R-help@r-project.org
> > Date: Tuesday, May 10, 2011, 5:59 PM
> >
> > You should provide reproducible data in addition to your code.
> >
> > S
> > On Tuesday, May 10, 2011 at 11:54 AM, Alaios wrote:
> > > Dear all,
> > > today I have writted the following code,
> > > to plot the contents of some matrices I have
> > >
> > > plot_shad_f
> > > function(f){
> > > library(ggplot2)
> > > dev.new()
> > > plotdata<-melt(f)
> > > names(plotdata)<-c('x','y','z')
> > > v<-ggplot(plotdata, aes(x, y, z = z))
> > > print(v + geom_tile(aes(fill=z)))
> > > }
> > >
> > > I would like to ask your help add a small circle in this plotting. What
> > > would be the easiest way to do that in ggplot2?
> > >
> > > Best Regards
> > > Alex
> > >
> > > ______________________________________________
> > > 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.
> > >
> >
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