paramprec {lgcp}

paramprec function

Description

A function to compute the precision matrix of a GMRF on an M x N toral grid with neighbourhood size ns. Note that the precision matrix is block circulant. The returned function operates on a parameter vector as in Rue and Held (2005) pp 187.

Usage

paramprec(ns, M, N)

Arguments

ns

neighbourhood size

M

number of cells in x direction

N

number of cells in y direction

Value

a function that returns the precision matrix given a parameter vector.