[R] Modeling presence only data in R

[Rubén Roa-Ureta]

milton ruser wrote:
> Dear All,
> 
> I have a set of environental maps and presence-only points for some species.
> How can I generate distributions models on R using these presence-only data?
> What packages and functions can I use to do so?
> 
> Kind regards,
> 
> Miltinho
> Brazil

If you have location data for each absence/presence (such as linear 
location data, easting and northing) consider using geoRglm.
Christensen, O. F., and Ribeiro, P. J. 2002. geoRglm: a package for 
generalized linear spatial models. R-NEWS, 2: 26–28.
HTH
Rubén