Hello list,
I am dealing with heavy metals in upper soil layers of forests. Some
of my (indicator) variograms behave like a spherical model at the
beginning but in stead of reaching the sill they behave like a
power-model for greater distances. I tried
several power models but they didn't fit the variogram very well.
Just two questions:
1. What does this special behavior of the experimental variogram tell
me about the spatial structure or stationarity?
2. Can I �mix" a spherical and and a power model to build up one
nested model?
Hope somebody can help
Bye
Lenz
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