[R] Density plot in ggplot2

[Paul Emberson]

Hi Ron,

I'm not sure why ylab doesn't work.  Maybe a bug.  I note the label 
doesn't get removed with labs() either.  However using 
scale_y_continuous(name="") does remove the label.

For the legend, you are using a fill scale, not a colour scale i.e. 
fill=factor(dat[,2]), not colour=factor(dat[,2])

use  scale_fill_hue(name = "Pallet", labels = c("X", "Y")) instead.

Regards,

Paul

RON70 wrote:
> Hi all, I was trying to draw a stacked density plot like that :
> library(ggplot2); library(plyr)
> dat <- cbind(rnorm(300), rep(c(1,2), each=150))
> ggplot() + geom_density(aes(x=dat[,1], fill=factor(dat[,2]),
> position="stack")) +
>            xlab("") + ylab("") +
>            scale_colour_manual(name = "Pallet", labels = c("X", "Y"))
> 
> Here everything is ok, except few points :
> 1. I want to remove the name of y-axis, which is by default "density". Here
> I put ylab(""), however although for x-axis it is working, for y-axis it is
> not. Is there any specific formula for that?
> 
> 2. I want to rename the color plot, as well as the title of the color. The
> function scale_colour_manual() seems not working. Can anyone please suggest
> me how to achieve desired thing?
> 
> Thanks