[R-sig-Geo] inverse distance with covariables using gstat

[Tobias Vetter]

I would like to do inverse distance interpolation with Trend removal.


When doing:
gstat(formula=z~Co,data=values,newdata=grid,nmax=10)

  will gstat first remove  the trend and then interpolate using inverse 
distance?

Here is the output I got:
[ordinary or weighted least squares prediction]