Here is one approach using lattice (trellis) graphics:
tmp.state <- data.frame( Frost=state.x77[,'Frost'],
Murder=state.x77[,'Murder'],
Region=state.region)
library(lattice)
trellis.par.set(col.whitebg())
xyplot( Murder ~ Frost, groups=Region, data=tmp.state,
panel.groups=function(...){panel.loess(...);panel.xyplot(...)}
,span=.8)
Just substitute in your variables and variable names.
Hope this helps,
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
[EMAIL PROTECTED]
(801) 408-8111
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Dean Sonneborn
> Sent: Wednesday, January 04, 2006 9:54 AM
> To: [email protected]
> Subject: [R] multiple lowess line in one plot
>
> I'm using this code to plot a smoothed line. These two
> columns of data really represent 4 groups and I'd like to
> plot a separate line for each group but have them all in the
> same plot. The R-Docs for lowess do not seem to indicate some
> type of "GROUPS=var_name" option. What would be the syntax for this?
>
> plot(AWGT ~ lipid )
> lines(lowess(lipid , AWGT, f=.8))
>
>
> --
> Dean Sonneborn, MS
> Programmer Analyst
> Department of Public Health Sciences
> University of California, Davis
> (530) 754-9516
>
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