[R-sig-eco] Problems with correspondence analysis in vegan

[Manuel Spínola]

Dear list members,

I am trying to run a correspondence analysis with cca function (package: 
vegan).
I got the following message:

 > ca1 = cca(roeesp)
Error in data.frame(sitenv) :
  argument "sitenv" is missing, with no default

Even I tried the example form the vegan tutorial and I got the same message:

cca(varespec)
Error in data.frame(sitenv) :
  argument "sitenv" is missing, with no default

I ran a PCA with rda function on the same data set (roeesp) and no problem.

I am working with R 2.8.0, Windows plataform.

Thank you very much in advance.
Best,

Manuel

-- 
Manuel Spínola, Ph.D.
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspinola at una.ac.cr
mspinola10 at gamil.com
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