Dear Milton, you have 2 packages for modelling species distribution in R: grasper and Biomod (by Wilfried Thuiller), but they are all presence-absence models, so you must generate pseudoabsences for each species, following recommendations in papers (see Lobo 2007). On the other side, there are free gis tools to perform presence-only models (Biomapper, GARP, Openmodeller). Write me if you need if you want some advice.
-- Alejandro González Fernández de Castro Departamento de Biodiversidad y Conservación Real Jardín Botánico (Consejo Superior de Investigaciones Científicas) Plaza de Murillo, 2 28014 Madrid - Spain 00 34 91 4203017 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
