Re: [R-sig-eco] plotting capscale results using ordiplot in Vegan

2011-04-20 Thread Andres Mellado Diaz
Hi Colleen,

Using capscale you can use the function plot.cca (use ?plot.cca to see all 
options) to make plots.
If you use this:

plot ( yourcapscaleresult, display=c(wa,bp))

 you get the site scores (wa) and the constraining variables arrows (bp) biplot 
, but if you want the triplot, species scores are in a bigger scale and your 
sites collapse in the middle, so I would try to make the 2 biplots, 

plot ( yourcapscaleresult, display=c(wa,bp))
plot ( yourcapscaleresult, display=c(sp,bp))

hope this helps,

Andrés

ckellogg ctekell...@gmail.com escribió:

 Hi,
 I used capscale to examine relationships between relative species abundances
 at different sites with environmental variables.  When I attempt to plot the
 results using ordiplot all of my site points are squished to the center of
 the biplot.  I have tried changing the scaling and that only makes things
 worse.  Is there anyway I can get the sites to spread out a bit in the
 ordination?

 Thanks so much!

 Colleen

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-- 
Andrés Mellado Díaz

Centre for Hydrological Studies CEH-CEDEX
Water Quality Department
Pº bajo de la Virgen del Puerto, 3
28005, Madrid
SPAIN
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Re: [R-sig-eco] plotting capscale results using ordiplot in Vegan

2011-04-20 Thread Gavin Simpson
On Tue, 2011-04-19 at 10:47 -0700, ckellogg wrote:
 Hi,
 I used capscale to examine relationships between relative species abundances
 at different sites with environmental variables.  When I attempt to plot the
 results using ordiplot all of my site points are squished to the center of
 the biplot.  I have tried changing the scaling and that only makes things
 worse.  Is there anyway I can get the sites to spread out a bit in the
 ordination?
 
 Thanks so much!
 
 Colleen 

Some code would be nice, otherwise how on earth can we know what you did
to plot the data?

Does:

plot(, scaling = 3)

where  represents what ever you were including to plot the
ordination in the first place help?

Or is the problem that you have one (a few) rogue sample(s) and/or
species?

G

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Re: [R-sig-eco] plotting capscale results using ordiplot in Vegan

2011-04-20 Thread ckellogg
Right. The code. Sorry about that.  This is what I used:

plot(ANareabac_red.cap,choices=c(1,2),type='n',scaling=2)
points(ANareabac_red.cap,choices=c(1,2),display='wa',pch=AN_info[,9],col=AN_info[,6],cex=1.5,scaling=2)


I don't really have any outliers so I don't think that is the problem.  I
will give what Andres suggested (thanks!) a shot. 


Colleen

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[R-sig-eco] plotting capscale results using ordiplot in Vegan

2011-04-19 Thread ckellogg
Hi,
I used capscale to examine relationships between relative species abundances
at different sites with environmental variables.  When I attempt to plot the
results using ordiplot all of my site points are squished to the center of
the biplot.  I have tried changing the scaling and that only makes things
worse.  Is there anyway I can get the sites to spread out a bit in the
ordination?

Thanks so much!

Colleen 

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http://r-sig-ecology.471788.n2.nabble.com/plotting-capscale-results-using-ordiplot-in-Vegan-tp6288126p6288126.html
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