R: [R] Re: Computation of space-time empirical crosscovariances

giovanna jona lasinio giovanna.jonalasinio at uniroma1.it
Fri Dec 3 12:13:00 CET 2004


Thanks, I'm looking at gstat and trying to understand in which way it is
appropriate to add time as the third dimension... Indeed the "simple"
attribute is not for space-time problems :-)

-----Messaggio originale-----
Da: Edzer J. Pebesma [mailto:e.pebesma at geog.uu.nl] 
Inviato: venerdì, 3. dicembre 2004 11:50
A: r-help at stat.math.ethz.ch; giovanna.jonalasinio at uniroma1.it
Oggetto: [R] Re: Computation of space-time empirical crosscovariances


Giovanna,

space-time cross covariance has never seemed to me something that can be
done "simple", but package gstat at least offers you: 1. to include time
as a third dimension, and model 3D anisotropy, 2. to calculate cross
variograms between different moments in time, and proceed with
cokriging.
--
Edzer




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