[R] Question about ggplot2 and stat_smooth

[Hadley Wickham]

On Mon, Oct 3, 2011 at 12:24 PM, Thomas Adams <Thomas.Adams at noaa.gov> wrote:
>  I'm interested in creating a graphic -like- this:
>
> c <- ggplot(mtcars, aes(qsec, wt))
> c + geom_point() + stat_smooth(fill="blue", colour="darkblue", size=2, alpha
> = 0.2)
>
> but I need to show 2 sets of bands (with different shading) using 5%, 25%,
> 75%, 95% limits that I specify and where the heavy blue line is the median.
> I don't understand how to do this with ggplot2.

Exactly what sort of limits do you want?  It sounds like maybe you are
looking for smoothed quantile regression.

Hadley

-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/