On Sat, Apr 7, 2012 at 11:16 AM, David Winsemius <dwinsem...@comcast.net> wrote:

> xyplot(mortality ~ type, data=xdat,
>               panel=function(x,y){
>                   panel.xyplot(x,y, jitter.x=TRUE)
>                   panel.segments(x0=c(.9, 1.9, 2.9),
>                                   x1=c(1.1,2.1,3.1),
>                                   y0=tapply(xdat$mortality, xdat$type,
> median),
>                                   y1=tapply(xdat$mortality, xdat$type,
> median),
>                             col="red", lwd=3 )
>
>                       })
>

Actually the OP had formula = mortality ~ factor(attend)|type,
(two conditioning factors). This approach will work but will require
1)  replace type with attend in tapply
2) subset conditional on packet.number
3) loop over the segments for the two sets of x-coords

An alternative will be

bwplot(mortality ~ factor(attend)|type,data=xdat,
 pch=95,cex=5,col=2,
 par.settings=list(
  box.rectangle = list(col = 'transparent'),
  box.umbrella = list(col = 'transparent')
 ),
 panel=function(x,y,...){
  panel.grid(lty=5)
  panel.bwplot(x,y,...)
  panel.xyplot(x,y,pch=16,jitter.x=TRUE,col=1)
 }
)

Hope this helps


>
>> thanks
>>
>>
>>
>> --
>> View this message in context:
>> http://r.789695.n4.nabble.com/Drawing-a-line-in-xyplot-tp4538689p4539596.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
> David Winsemius, MD
> West Hartford, CT
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Reply via email to