comp_mat_cov: Matern covariance function for a polygons.
In smile: Spatial Misalignment: Interpolation, Linkage, and Estimation

comp_mat_cov

R Documentation

Matern covariance function for a polygons.

Computing the Matern covariance function between polygons.

comp_mat_cov(cross_dists, n, n2, sigsq, phi, nu)

`cross_dists`	a `list` such that each position contains the cross distances between points within different polygons.
`n`	an ingeger representing number of polygons (note that, this is different than the size of the list `cross_dists`
`n2`	usually, equal to `n`, except when the function is being used to calculate the "cross" covariance between two different partitions of the same space.
`sigsq`	the σ^2 parameter from the Matern covariance function.
`phi`	the φ parameter from the Matern covariance function, controls the range of the spatial dependence.
`nu`	the ν parameter from the Matern covariance function, controls the differentiability of the process. Note that, if we set `nu = .5`, then the calculations are based on the exponential covariance function.

The matern covariance matrix associated with a set of polygons.