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variogram parameters

3 messages · GEMA FERNANDEZ-AVILES CALDERON, Ashton Shortridge

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Well,

all are very important for a good fit to your empirical semivariogram. Screw up 
one, and the curve won't be very close.

Maybe what you are looking for is, how to start developing a good model.

If so, I would say (based largely on experience teaching this):

1. anisotropy first. No point developing a crummy omnidirectional model
2. model form is next (spherical, exponential, etc)
3. nugget
4. sill and range

And iterate 2-4 until it seems ok. 

Others surely have their own preferences....

Yours,

Ashton
On Monday 21 June 2010 16:31:16 GEMA FERNANDEZ-AVILES CALDERON wrote: