R-help,
I'm using the lattice package to plot 2 variables (vekt ~ aldur)
conditioned to a third (kyn * 2 categories).
I use the following:
xyplot(vekt ~ aldur|kyn, , data = sexSu)
I want to superimpose the average(vekt) by 'aldur'
conditioned to kyn by using something like:
xyplot(vekt~aldur|kyn, subset = aldur <= 12
, data = sexSu, panel = function(x, y)
{
panel.xyplot(x, y)
panel.points(x,mean(y),col=2,cex=2 )
})
but th output is just a horozontal line ( the average of 'vekt')
in both panels I guess)
How can be done?
Thanks in advance
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor 4.1
year 2006
month 12
day 18
svn rev 40228
language R
version.string R version 2.4.1 (2006-12-18)
>
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