R help - Jun 2008 - after setting auto.key=TRUE, legend become inconsistent with the graph

When I use xyplot (from package lattice) to produce a multi-series graph:

xyplot(linear+quadratic+sqrt~x, data=df, main="complexity of different
functions", ylab="y", col=c("red", "black",
"orange"), type="b",
lty=c(1,2,3), pch=c(1,2,3), auto.key=TRUE)

where I changed the default colour, line type and data point type so
that each series is distinguishable from each other.  The graph looks
good except that the color and shape of data point of each series in
the legend still reflects the default setting of xyplot rather than
what I've said in the command!  This renders the legend useless.  So
what legend command (other than auto=TRUE) should I use instead to
solve this problem?

Also currently the legend is above the graph and below the title,
which looks weird to me and I want the legend to be placed at the
right of the graph instead.  What should I do?

Thanks!

Mark

Set the various plotting parameters in par.settings= in which
case both the legend and the plot itself will be taken from there.
See for example:

http://finzi.psych.upenn.edu/R/Rhelp02a/archive/90432.html

where superpose.line parameters are set.  Similarly you can
set superpose.symbol parameters.

On Mon, Jun 23, 2008 at 11:35 PM, Mark Farnell <mark.farnell at gmail.com>
wrote:
> When I use xyplot (from package lattice) to produce a multi-series graph:
>
> xyplot(linear+quadratic+sqrt~x, data=df, main="complexity of different
> functions", ylab="y", col=c("red",
"black", "orange"), type="b",
> lty=c(1,2,3), pch=c(1,2,3), auto.key=TRUE)
>
> where I changed the default colour, line type and data point type so
> that each series is distinguishable from each other.  The graph looks
> good except that the color and shape of data point of each series in
> the legend still reflects the default setting of xyplot rather than
> what I've said in the command!  This renders the legend useless.  So
> what legend command (other than auto=TRUE) should I use instead to
> solve this problem?
>
> Also currently the legend is above the graph and below the title,
> which looks weird to me and I want the legend to be placed at the
> right of the graph instead.  What should I do?
>
> Thanks!
>
> Mark
>
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