This function is generic; method functions can be written to handle
specific classes of objects. Classes which already have methods for
this function include default, gls and lme. See
the appropriate method documentation for a description of the
arguments.
Usage
Variogram(object, distance, ...)
Arguments
object
a numeric vector with the values to be used for
calculating the semi-variogram, usually a residual vector from a
fitted model.
distance
a numeric vector with the pairwise distances
corresponding to the elements of object. The order of the
elements in distance must correspond to the pairs
(1,2), (1,3), ..., (n-1,n), with n rep
...
some methods for this generic function require additional
arguments.
Value
will depend on the method function used; see the appropriate documentation.
References
Cressie, N.A.C. (1993), "Statistics for Spatial Data", J. Wiley & Sons.