[R] graphics - joining repeated measures with a line

[Gabor Grothendieck]

Just one correction (although in this case it does not change the
output) -- use group = patient rather than group = symbol[patient]:

xyplot(var ~ visit, group = patient, type = "b", auto.key = list(space
= "right"),
   par.settings = list(superpose.symbol = list(pch = symbols)))


On 9/6/06, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> Make each pair of points a separate group using group= and specify
> that both points and lines be used via type = "b".  Also set the
> symbols in par.settings= so that they are accessed by both
> the main plot and the legend:
>
> xyplot(var ~ visit, group = symbols[patient], type = "b",
>   auto.key = list(space = "right"),
>   par.settings = list(superpose.symbol = list(pch = symbols)))
>
>
> On 9/6/06, Murray Pung <mcpung at gmail.com> wrote:
> > I would like to join repeated measures for patients across two visits using
> > a line. The program below uses symbols to represent each patient. Basically,
> > I would like to join each pair of symbols.
> >
> >
> >
> > library(lattice)
> >
> > patient <- c(1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9)
> > var <-
> > c(826,119,168,90,572,323,122,10,42,900,250,180,120,650,400,130,12,33)
> > visit <- c(1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2)
> > symbols <- c(1,2,3,4,5,6,7,8,9)
> >
> > xyplot(var ~ visit, pch = symbols[patient], key = list(points = list(pch =
> > symbols), space = list("right"),text =
> > list(c("1","2","3","4","5","6","7","8","9"))))
> >
> > # grid.lines(x = visit,y = var,draw = TRUE) ??
> >
> > I am thinking I may need to use a function that joins coordinates (for
> > example join (1,826) with (2,900)), but am hoping there may be a better way.
> >
> >
> >
> > Thanks for any help.
> >
> > Murray
> >
> >
> > --
> > Murray Pung
> > Statistician, Datapharm Australia Pty Ltd
> > 0404 273 283
> >
> >        [[alternative HTML version deleted]]
> >
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