[R] biplot_group_colours_and_point_symbols

[Indermaur Lukas]

hi,
i am seeking for a solution to create a biplot that shows: 
a) data points instead of labels and that
b) shows two different groups (field: site with two factor levels: forest/corridor) in different colours
 
i tried to include "pch=19" to show points instead of labels in the syntax below but failed.
 
biplot(model, main="", iter=0.1,  cex=c(0.3,1.2), col=c(1,2))

i appreciate any hint.
 
best regards,
lukas
 
 
 
°°° 
Lukas Indermaur, PhD student 
eawag / Swiss Federal Institute of Aquatic Science and Technology 
ECO - Department of Aquatic Ecology
Überlandstrasse 133
CH-8600 Dübendorf
Switzerland
 
Phone: +41 (0) 71 220 38 25
Fax    : +41 (0) 44 823 53 15 
Email: lukas.indermaur at eawag.ch
www.lukasindermaur.ch <http://www.lukasindermaur.ch/>