[R] ggplot geom_smooth colour

[Jose Iparraguirre]

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: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of soon yi
Sent: 17 December 2012 17:16
To: r-help at r-project.org
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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