Vegan: Diversity Plot, label points

[Alejo C.S.]

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?

Thanks in advance.

Alejo

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[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
>
> ______________________________________________
> [hidden email] mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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 Dr. Gavin Simpson             [t] [phone]
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______________________________________________
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