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This method function calculates the semi-variogram for an arbitrary
vector object
, according to the distances in distance
.
For each pair of elements object
, the
corresponding semi-variogram is
# S3 method for default
Variogram(object, distance, …)
a numeric vector with the values to be used for calculating the semi-variogram, usually a residual vector from a fitted model.
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
representing the
length of object
, and must have length n(n-1)/2
.
some methods for this generic require additional arguments. None are used in this method.
a data frame with columns variog
and dist
representing,
respectively, the semi-variogram values and the corresponding
distances. The returned value inherits from class Variogram
.
Cressie, N.A.C. (1993), "Statistics for Spatial Data", J. Wiley & Sons.
# NOT RUN {
fm1 <- lm(follicles ~ sin(2 * pi * Time) + cos(2 * pi * Time), Ovary,
subset = Mare == 1)
Variogram(resid(fm1), dist(1:29))[1:10,]
# }
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