[R-sig-Geo] linear model with sill

[David Romero]

Hello listers,

I am elaborating variograms with geoR and testing models, I'd like to 
know how I can test linear model with a sill.

v1 = variog(PmmRG, 
max.dist=50000,direction=0,tolerance=22.5,unit.angle="degrees",option = 
c("bin"),breaks=brk)
ols<- variofit(v1,cov.model="linear", wei="cressie")

Thanks and regards,

David