[R] Setting the colors of lines in a trellis plot...

[Jamieson Cobleigh]

The col command worked.

Thanks!

Jamie

On 7/10/06, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> Use col= to specify colors, e.g.
>
>     library(lattice)
>     x <- 1:12
>     xyplot(x ~ x, group = gl(3,4), col = 1:3, type = "l", auto.key = TRUE)
>
> If this is not sufficiently close to your problem
> 1. cut your example down to a *minimal* size and
> 2. provide it as *self contained* and
> 3. *reproducible* code.
>
> On 7/10/06, Jamieson Cobleigh <cobleigh at gmail.com> wrote:
> > With some help from those with expertise on this list, I managed to
> > produce a plot using trellis that looked like I wanted it to look.
> > Now, I need to take the same plot and make the lines on it color, but
> > I want to specify the color for the lines myself.
> >
> > I've managed to make the key use the colors I want.  I've managed to
> > make the symbols of the actual plot use the colors I want.  But I have
> > been unable to find the correct incantation to make the lines of the
> > actual plot use the colors I want.  Here's the relevant section of
> > code:
> >
> >  mycolors <- c("black", "darkgreen", "red")
> >
> >  mylines   <- Rows(superpose.line, 1:numlines);
> >  mylines$col <- mycolors
> >
> >  mysymbols <- Rows(superpose.symbol, 1:numlines);
> >  mysymbols$pch <- c(15:18)[1:numlines]
> >  mysymbols$col <- mycolors
> >
> >  print(xyplot(
> >    panel = panel.superpose,
> >    log10(states) ~ size,
> >    groups=category,
> >    data=data,
> >    type='b',
> >    lwd = 2,
> >    par.settings = list(superpose.symbol=mysymbols),
> >    ylim=c(y_min, y_max),
> >    scales = list(tck=c(1, 0), axs="r",
> >
> >                  x=list(tick.number=(xmax - xmin + 1), at=xmin:xmax,
> >                  labels=xmin:xmax, cex=1.75),
> >
> >                  y=list(axs="r", rot=c(90, 0), labels=y_labels,
> >                         at=y_at, cex=1.75
> >                  )
> >              ),
> >    key = list (
> >      text  = list(levels(data$category)),
> >      lines = list(type="b",
> >                   lty=mylines$lty,
> >                   pch=mysymbols$pch,
> >                   cex=rep(1.25, numlines),
> >                   col=mylines$col),
> >      x = .98,
> >      y = .25,
> >      corner=c(1,0)
> >    ),
> >    xlab = list(label="System Size", cex=2),
> >    ylab = list(label="States", cex=2),
> >  ))
> >
> >
> > Can anyone help me out with this?
> >
> > Thanks!
> >
> > Jamie
> >
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>