| Variogram {nlme} | R Documentation |
Calculate Semi-variogram
Description
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 |
... |
some methods for this generic function require additional arguments. |
Value
will depend on the method function used; see the appropriate documentation.
Author(s)
José Pinheiro and Douglas Bates bates@stat.wisc.edu
References
Cressie, N.A.C. (1993), "Statistics for Spatial Data", J. Wiley & Sons.
Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S and S-PLUS", Springer.
See Also
Variogram.corExp,
Variogram.corGaus,
Variogram.corLin,
Variogram.corRatio,
Variogram.corSpatial,
Variogram.corSpher,
Variogram.default,
Variogram.gls,
Variogram.lme,
plot.Variogram
Examples
## see the method function documentation