[R] Vegan: Diversity Plot, label points

[Gavin Simpson]

On Wed, 2011-11-23 at 16:02 -0300, Alejo C.S. wrote:
> Dear List,
> 
> I can'f figure how to add point labels in the next plot (example from
> ?taxondive help page):
> 
> library(vegan)
> data(dune)
> data(dune.taxon)
> taxdis <- taxa2dist(dune.taxon, varstep=TRUE)
> mod <- taxondive(dune, taxdis)
> plot(mod)
> 
> The points in this plot are diversity values of single sites, and I'd
> like to add a label to each one. The plot command don't accept a
> "label" argument.
> Any tip?

A couple of options:

with(mod, text(Species, Dplus, label = rownames(dune), 
               pos = 2, cex = 0.7))

fiddle with pos - see ?text for details.

Another option is

with(mod, identify(Species, Dplus, label = rownames(dune), cex = 0.9))

where you now click around the points you want to label. See ?identify
for further details.

HTH

G

> Thanks in advance.
> 
> Alejo
> 
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