Something like this may do it.
http://stackoverflow.com/questions/6919025/how-to-assign-colors-to-categorical-variables-in-ggplot2-that-have-stable-mappin
John Kane
Kingston ON Canada
> -----Original Message-----
> From: david_ly...@yahoo.com
> Sent: Wed, 27 Jun 2012 09:07:53 -0700 (PDT)
> To: r-help@r-project.org
> Subject: [R] qplot and colors (Please Help)
>
>
>
> Please help:
>
>
> I am using qplot as below and want to specify a different color scheme
> for race but dont know how, can someone show me.
>
>
> Thanks in advance
>
>
>
> Code and input file below:
>
>
>
> library(ggplot2)
> library(gridExtra)
> d<-read.table("results", header=TRUE, fill=TRUE)
> plot2<-qplot(X,Y,data=d,color=race,facets=TYPE~., xlab="X", ylab="Y") +
> theme_bw()
> grid.arrange(plot2,ncol=1)
> dev.off()
>
>
> cat results
> <snip>
> X Y ID race TYPE
> 0.0350 0.0200 1 X NA
> 0.0280 0.0251 2 X NA
> 0.0258 0.0175 3 Y NA
> </snip>
>
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