[R] Question about ggplot2 and stat_smooth

[Dylan Beaudette]

Hi Tom,

Just wanted to chime-in and let you know that the linked figures are really 
cool! Keep up the good work.

On an un-related note, any talk of future GRASS training sessions?

Cheers,
Dylan

On Tuesday, October 04, 2011, Thomas.Adams at noaa.gov wrote:
> Hadley,
> 
> Thanks for responding. No, not smoothed quantile regression. If you go here: 
http://www.erh.noaa.gov/mmefs/index.php and click on one of the colored 
squares, you can see we have 'boxplots'. What I want to express is the 
uncertainty as depicted in the example from my previous email where I can 
specify the limits calculated for the 'boxplots' using  5%, 25%,75%, 95% 
limits as we have with the 'boxplots'.
> 
> Tom
> 
> ----- Original Message -----
> From: Hadley Wickham <hadley at rice.edu>
> Date: Tuesday, October 4, 2011 10:23 am
> Subject: Re: [R] Question about ggplot2 and stat_smooth
> To: Thomas Adams <Thomas.Adams at noaa.gov>
> Cc: R-help forum <r-help at r-project.org>
> 
> 
> > 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
> >
> 
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> 


-- 
Dylan E. Beaudette
USDA-NRCS Soil Scientist
California Soil Resource Lab
http://casoilresource.lawr.ucdavis.edu/