R help - Aug 2010 - discerning species by color in cca biplot

Dear List,

I am running constrained correspondence analysis for abundance data of 7
birds.

However, I would like to check which bird prefers which environment gradient
by showing the species with different colors of the dots in cca plot
(package vegan).

Please kindly help and thank you

Elaine

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If you only have seven species, why not draw the label for the species
(the names() component of your data) at the species score, rather than a
colour?

plot(OBJ, display = c("sites","species"), scaling = 3, type
= "n")
points(OBJ, display = "sites", scaling = 3, type = "p")
points(OBJ, display = "species", scaling = 3, type = "t")

Not tested, am away at the moment but heading home. If you are still
having trouble (and I see now why you wanted matplot) then email back and
I'll given a longer example illustrating who to build up plots by hand.

Gavin
> Dear List,
>
> I am running constrained correspondence analysis for abundance data of 7
> birds.
>
> However, I would like to check which bird prefers which environment
> gradient
> by showing the species with different colors of the dots in cca plot
> (package vegan).
>
> Please kindly help and thank you
>
> Elaine
>
> 	[[alternative HTML version deleted]]
>
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