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

[Joris Meys]

use the condition and par options, eg :

x <- rnorm(10)
y <- rnorm(10)
A<- x<0
plot(x,y,type="l")
points(x[A],y[A],pch=19,col="red")
points(x[!A],y[!A],pch=21,col="blue",bg="green",lwd=2,cex=4)

cheers
Joris

On Thu, Jun 17, 2010 at 3:55 PM, 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
> --
> View this message in context: http://r.789695.n4.nabble.com/Plotting-different-symbols-in-R-for-different-values-in-a-vector-tp2258833p2258833.html
> Sent from the R help mailing list archive at Nabble.com.
>
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-- 
Joris Meys
Statistical consultant

Ghent University
Faculty of Bioscience Engineering
Department of Applied mathematics, biometrics and process control

tel : +32 9 264 59 87
Joris.Meys at Ugent.be
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