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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