Global variance computation for a set of locations using the covarianve model
globalvar(geodata, locations, coords = geodata$coords, krige)an object of the class geodata
n by 2 matrix with a set of locations, typically a prediction grid
data coordinates
a list defining the model components and the type of
kriging. It can take an output to a call to krige.control or
a list with elements as for the arguments in krige.control.
An scalar with the value of the global variance
Isaaks, E.S and Srivastava, R.M. (1989) An Introduction to Applied Geostatistics, pag. 508, eq. 20.7. Oxford University Press.
krige.conv for the kriging algorithm.