Dear All, I have kind of a conceptual question. Have been working on a data set of a continuous variable across the US. I managed to model the spatial dependency by fitting different model variograms and did ordinary kriging to extrapolate the values. I find out that for some years there is a significant relationship between latitude and the variable I am interested in model. However, in no case the R2 was higher that 0.10. My thinking was that the drift was low enough in terms of predictive value, so the drift could be overlooked. Do you agree with this? Thanks for any hint on this questions. Best, Jose
Jos? L. Rotundo CONICET Facultad de Ciencias Agrarias Univ. Nacional de Rosario Zavalla, Santa Fe Argentina