[R] Trellis Plot Labels

[Deepayan Sarkar]

On 11/17/06, Deepayan Sarkar <deepayan.sarkar at gmail.com> wrote:
> On 11/17/06, Turgut Durduran <durduran at yahoo.com> wrote:
> > On 11/17/06, Turgut Durduran <durduran at yahoo.com> wrote:
> > >> Hello everyone,
> > >>
> > >> I am ploting a groupeddata object with formula:
> > >>
> > >> formula(mydatausegroup)
> > >> BF ~ HO | ID/Infar/Day
> > >>
> > >> Using this command:
> > >> plot(na.omit(mydatausegroup), displayLevel=2,layout=c(10,2),aspect=2)
> > >>
> > >>
> > >> This trellis plot does almost what I want and produces a 10x2 trellis plot, each panel is labeled
> > >> as ID/Infar where infarct is either 1 or 0. And in each panel, it plots BF vs HO for each Day. However, the "days" are labeled simply as "1,2,3,4" i>>nstead of their actual values (ranging from 1 to 8). This just mapped for each ID the "1 st measurement, 2nd measurement, 3rd measurement, 4th >>measurement".
> > >>
>
> This seems to be intended behaviour, and the responsible function is
> collapse.groupedData (which is not very transparent to me).
>
> > >> How can I get this trellis plot to use 8 different colors and label them correct?
>
> I don't see a documented way, so you'll probably need to modify
> collapse.groupedData

I should have added: it's of course fairly easy if you use xyplot directly.

Deepayan