[R] Plotting different symbols in R for different values in a vector

Sarah Goslee sarah.goslee at gmail.com
Thu Jun 17 17:33:41 CEST 2010

Take a look at ?par - particularly the options for pch and col.


On Thu, Jun 17, 2010 at 9:55 AM, clips10 <m.mcquillan at lancaster.ac.uk> wrote:
> I have some point locations I want to add to a plot and have the command
> pts1<-as.points(Xcoordinate,Ycoordinate)
> then
> plot(poly1,type="l",lwd=1)
> what I want to do is add the locations onto the plot. I can do this using
> the points command but I have another vector in my data frame with the x and
> y coordinates called A for instance which takes values 1 and 0. I want to
> plot the locations onto my plot and have a different symbol or colour
> depending on whether this other vector takes the value 1 or 0. Is there
> anyway to do this?
> Thanks
> --

Sarah Goslee

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