R help - Aug 2004 - Cross-variograms

Jacques, provided that X and Y are colocated (i.e., have
exactly the same observation locations), you get the
cross variogram right; the definition of this cross
variogram is however:

gamma(h)= E[(X(s)-X(s+h))*(Y(s)-Y(s+h))]

also, where you select:

cv <- v$gamma[1:14]

you may be better off using the more general

v$gamma[v$id == "X.Y"]

Best regards,
--
Edzer