Try something along these lines:
> library(ggplot2)
> cbPalette <- c("#999999", "#E69F00")
> df<-data.frame(y=rnorm(100,30,10),x=rnorm(100,20,5),treat=factor(rbinom(100,1,0.5)))
> p1<-ggplot(df, aes(x=x, y=y,group=treat)) + theme_bw() +
+ geom_smooth(aes(linetype=treat, colour="black"),method="lm", se=FALSE,
fullrange=T,size=1) + scale_colour_manual(values=cbPalette)
> p1
Etc.
It needs some tweaking, but I guess it's getting closer to what you want.
José
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of soon yi
Sent: 17 December 2012 17:16
To: [email protected]
Subject: Re: [R] ggplot geom_smooth colour
Thank you.
Rather embarrassed. Its fair to say i had rather over comlicated my attempts
to do this.
sy
soon yi wrote
> Hi
>
> I am using geom_smooth to fit linear regression lines over a scatterplot
> for two treatment groups. The default colour for the two lines are blue. I
> have been unable to change this with the usual options. A search online
> has not suggested any solution / work around.
>
> Is there a solution to this?
>
> many thanks, sy
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