We can see the plotting options using trellis.par.get(). For example, one
listed parameter is $superpose.line for which we can set col, lty, and lwd.
Load the mlmRev package to obtain the Gcsemv data (used in Lattice book).
One way to set the parameters is

data(Gcsemv, package = "mlmRev")

my.fonts  <- list(font = 2,cex = 2)

my.theme <- list(
superpose.symbol = list(col=c(1,3)),
superpose.line=list(col=c(1,3),lwd=c(1,2)),
par.xlab.text = my.fonts,
par.ylab.text = my.fonts
)

xyplot(written ~ course , data = Gcsemv, groups = gender, type = c("p","r"),

       par.settings = my.theme,
       auto.key = list(lines = TRUE, points = FALSE))
On Wed, Apr 15, 2009 at 5:40 AM, Paulo E. Cardoso <pecardoso@netcabo.pt>wrote:

> I'm not being able to control all parameters of a xyplot.
>
> dataset example:
> > tabp[1:10,]
>   time  n         X id       name
> 1     1 95  0.000000  1 Coral reef
> 2     1 93  0.000000  2 Coral reef
> 3     1 92  0.000000  3 Coral reef
> 4     1 90  0.000000  4 Coral reef
> 5     1 87  8.994321  5 Coral reef
> 6     1 86 12.580143  6 Coral reef
> 7     1 84 17.004030  7 Coral reef
> 8     1 83 18.469500  8 Coral reef
> 9     1 82 37.919033  9 Coral reef
> 10    1 81 39.059352 10 Coral reef
> ...
>
> plot code:
> xyplot(
>      X~n,groups=name,data=tabp[tabp$time %in% c(1,4,8),],
>      ylab="% of target",
>      xlab="PU selection Frequency",
>      lty=c(1,3,5), #! not responding
>      xlim=c(-10,110),
>      scales=list(cex=0.7,at=seq(0,360,by=20),labels=seq(0,360,by=20)), #!
> not responding
>      panel=function(x,y,groups,subscripts)
>      {
>        panel.xyplot(x,y,
>        subscripts=subscripts,
>        groups=groups,
>        type="l")
>        panel.abline(h=30,lty=2,col="grey50")
>      },
>      key=list(
>        space="top",
>        columns=1,
>        text=list(levels(tabp$name)[c(2,5,11)]),
>        lines=list(col=c("grey","blue","green"))
>        )
>      )
>
> A few controls are not responding and I don't know how to:
> 1) control cex for xlab and ylab
> 2) control position of legend
> 3) control lty for each group level
> 4) control plot groups colors
> 5) match legend colors with graph colors
> Any help will be very appreciated.
>
> ____________
> Paulo E. Cardoso
>
> ______________________________________________
> 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<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>

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