spatialCovariance: Computation of spatial covariance matrices for data on
Functions that compute the spatial covariance matrix for
the matern and power classes of spatial models, for data that
arise on rectangular units. This code can also be used for the
change of support problem and for spatial data that arise on
irregularly shaped regions like counties or zipcodes by laying
a fine grid of rectangles and aggregating the integrals in a
form of Riemann integration.