Takes an enmtools.species object and a set of environment layers, and adds the environmental predictor values to the occurrence data. Typically not called by the user directly. Code modified from Elith and Hijmans SDM with R tutorial
add.env(species, env, verbose = TRUE)
An enmtools.species object with environmental data attached to it.
An enmtools.species or enmtools.clade object
A raster stack of environmental variables
Controls printing of progress messages