I had to do this recently, and I finally gave up trying to do it with R alone. Instead, I used the LaTeX overpic package. For the result, see Figure 1 in http://journal.sjdm.org/9417/jdm9417.pdf or (screenshot of it) in http://journal.sjdm.org/9417/jdm9417.html and the .tex file http://journal.sjdm.org/9417/jdm9417.tex and the R file that drew the plots http://journal.sjdm.org/9417/figs.R
The pictures are tiny in this case. I do think it is possible to define your own symbols. Maybe someone else can say how. Jon On 07/29/09 10:27, Rainer M Krug wrote: > Hi > > while teaching R, the question came up if it would be possible to add > a picture (saved on the HDD) to a graph (generated by plot()), which > we could not answer. > > > > It might easily kill a clean graph, but: is there a way of doing this, > even one should not do it? > > > On a similar line of thought: is it possibe to define own symbols so > that they can be used in the plot function with pch=? > > > Rainer > > -- > Rainer M. Krug, Centre of Excellence for Invasion Biology, > Stellenbosch University, South Africa > > ______________________________________________ > 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. -- Jonathan Baron, Professor of Psychology, University of Pennsylvania Home page: http://www.sas.upenn.edu/~baron Editor: Judgment and Decision Making (http://journal.sjdm.org) ______________________________________________ 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.