[R] Lattice xyplot: Fill Legend Points

[Richard M. Heiberger]

I always get lost in simpleKey.  The approach of directly modifying
the trellis object usually works.

> tmp <- xyplot(pct.quant ~ sampdate, data = ffg.st, groups = func_feed_grp, type =
+ 'p', pch = 19, key = simpleKey(text = levels(ffg.st$func_feed_grp), space =
+ 'right', points = T, lines = F),par.settings = list(superpose.points =
+ list(col = rainbow(7)), superpose.lines = list(col = rainbow(7))), main =
+ 'Functional Feeding Groups (Individuals)', xlab = 'Year', ylab = 'Proportion
+ of Individuals')
> tmp
> str(tmp)
> tmp$legend$right$args$key$points$pch
[1] 1 1 1 1 1 1 1
> tmp$legend$right$args$key$points$pch[] <- 19
> tmp$legend$right$args$key$points$pch
[1] 19 19 19 19 19 19 19
> tmp
>

Rich

On Thu, Oct 17, 2013 at 12:57 PM, Rich Shepard <rshepard at appl-ecosys.com> wrote:
> On Thu, 17 Oct 2013, Richard M. Heiberger wrote:
>
>> That should have worked.
>
>
>   That's what I thought when I first tried it.
>
>
>> I think something else is interfering. Did you redefine either T or F?
>
>
>   Not intentionally.
>
>
>> Please send the output from dput(head(ffg.st)) so we can experiment in
>> your setting.
>
>
> structure(list(sampdate = structure(c(13326, 13326, 13326, 13326, 13326,
> 13326), class = "Date"), func_feed_grp = structure(c(1L, 2L, 3L, 4L, 6L,
> 7L), .Label = c("Filterer", "Gatherer", "Grazer", "Omnivore", "Parasite",
> "Predator", "Shredder"), class = "factor"),
>     quant = c(812L, 1880L, 624L, 11L, 948L, 1540L), pct.quant = c(0.14,
>     0.323, 0.107, 0.002, 0.163, 0.265), num.taxa = c(11L, 28L,
>     4L, 1L, 12L, 3L), pct.num.taxa = c(0.186, 0.475, 0.068, 0.017,
>     0.203, 0.051)), .Names = c("sampdate", "func_feed_grp", "quant",
> "pct.quant", "num.taxa", "pct.num.taxa"), row.names = 102:107, class =
> "data.frame")
>
>
> Rich
>
> --
> Richard B. Shepard, Ph.D.          |      Have knowledge, will travel.
> Applied Ecosystem Services, Inc.   |
> <http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863
>
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