On Tue, Mar 12, 2019 at 2:28 AM Kevin Wright <kw.stat at gmail.com>
wrote:>
> See the examples here:
> https://www.stat.ubc.ca/~jenny/STAT545A/block10_latticeNittyGritty.html
Excellent reference. The only improvement I could think of is to abuse
the non-standard evaluation of 'groups' to avoid repeating the name of
the dataset, which would go something like
xyplot(lifeExp ~ gdpPercap | factor(year), yDat, aspect = 2/3,
grid = TRUE, scales = list(x = list(log = 10, equispaced.log = FALSE)),
col = jDarkGray, pch = jPch,
groups = list(cex = sqrt(pop/pi) / jCexDivisor,
fill = color),
panel = function(x, y, ..., groups, subscripts) {
panel.xyplot(x, y,
cex = groups$cex[subscripts],
fill = groups$fill[subscripts], ...)
})
Unfortunately, this doesn't work because prepanel.default.xyplot()
tries to be too smart and assumes that 'groups' is a factor. A
workaround is to override the default prepanel function; e.g.,
lattice.options(prepanel.default.xyplot function(x, y, ...)
list(xlim = extendrange(range(x)),
ylim = extendrange(range(y))))
I will try to fix prepanel.default.xyplot() for the next update of lattice.
-Deepayan
>
> On Mon, Mar 11, 2019 at 2:26 PM Sebastien Bihorel <
> sebastien.bihorel at cognigencorp.com> wrote:
>
> > Hi,
> >
> > I am a big user/fan of the lattice package for plotting. As far as I
know,
> > lattice only offers one method to stratify data within a xyplot panel,
> > using the groups arguments.
> > A contrario, the ggplot package allow users to use different variables
for
> > coloring, setting the symbols, the line types or the size of symbols.
This
> > frequently comes handy.
> > My question is whether any work has been done in the lattice ecosystem
to
> > reproduce this functionality? If so, I would greatly appreciate any
> > pointers to the appropriate package documentation.
> >
> > Thank you
> >
> > Sebastien
> >
> > ______________________________________________
> > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> > http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
> --
> Kevin Wright
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.