Compute Spatial Variogram
Usage
variogram(krig, nint, plotit=T, ...)
Arguments
krig
|
trend-surface or kriging object with columns x , y , and z
|
nint
|
number of bins used
|
plotit
|
logical for plotting
|
...
|
parameters for the plot
|
Description
Compute spatial (semi-)variogram of spatial data or residuals.Details
Divides range of data into nint
bins, and computes the average squared
difference for pairs with separation in each bin. Returns results for
bins with 6 or more pairs.Value
x
and y
coordinates of the variogram and cnt
, the number of pairs
averaged per bin.Side Effects
Plots the variogram if plotit = T
See Also
correlogram