R help - Mar 2009 - ggplot2: specifying legend titles

I am trying to specify a legend title to be other than the variable  
name, but I find that the legend splits because scale_shape() takes  
effect but scale_colour() does not.  Can someone spot my error?   
Here's some toy code that produces the problem on my system (R2.8.1,  
windows, today's CRAN package updates):

library(ggplot2)
a <- sample(letters[1:5],100,replace=T)
b <- rnorm(100)
c <- rnorm(100)
qplot(b,c,shape=a,colour=a) +
   scale_colour("Better legend title") +
   scale_shape("Better legend title")



Any review or distribution by anyone other than the person for whom it was
originally intended is prohibited.
If you have received this e-mail in error please delete all copies.
Opinions conclusions or other information contained in this e-mail may not be
that of the organization.

On Fri, Mar 20, 2009 at 9:07 AM, Etches Jacob <jetches at iwh.on.ca>
wrote:
> I am trying to specify a legend title to be other than the variable name,
> but I find that the legend splits because scale_shape() takes effect but
> scale_colour() does not. ?Can someone spot my error? ?Here's some toy
code
> that produces the problem on my system (R2.8.1, windows, today's CRAN
> package updates):
>
> library(ggplot2)
> a <- sample(letters[1:5],100,replace=T)
> b <- rnorm(100)
> c <- rnorm(100)
> qplot(b,c,shape=a,colour=a) +
> ?scale_colour("Better legend title") +
> ?scale_shape("Better legend title")
I'm not sure where scale_colour is coming from - you want
scale_colour_discrete()

Hadley
> Any review or distribution by anyone other than the person for whom it was
> originally intended is prohibited.
> If you have received this e-mail in error please delete all copies.
> Opinions conclusions or other information contained in this e-mail may not
> be that of the organization.
>
> ______________________________________________
> R-help at 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.
>


-- 
http://had.co.nz/