
colors <- c("red", "blue", "darkgreen", "gold", "black")
labels <- c("3/02/2012","12/30/2011","4/20/2012")

In plot I use
 
{
plot(x, hx1 , type="l", lwd=2, tck=1, col=colors[1], ylim=c(0, maxhx), xlab="x value",  ylab="Density", main="AAPL")
.
.
.
labels, lwd=2, lty=c(1, 1, 1, 1, 2), col=colors)
}

It looks like qplot uses
 
colour=colors
 
to pickup colors. 

At the R console type
 
colors()
 
For a list of color names and numbers.
 
Hope this helps.  


Frank
Chicago, IL
 
> Date: Wed, 27 Jun 2012 09:07:53 -0700
> From: david_lyon3@yahoo.com
> 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>
> 
> ______________________________________________
> 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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