blockcircbase: blockcircbase function

In lgcp: Log-Gaussian Cox Process

blockcircbase function

Description

Compute the base matrix of a continuous Gaussian field. Computed as a block circulant matrix on a torus where x and y is the x and y centroids (must be equally spaced)

Usage

blockcircbase(x, y, sigma, phi, model, additionalparameters, inverse = FALSE)

Arguments

x	x centroids, an equally spaced vector
y	y centroids, an equally spaced vector
sigma	spatial variance parameter
phi	spatial decay parameter
model	covariance model, see ?CovarianceFct
additionalparameters	additional parameters for chosen covariance model. See ?CovarianceFct
inverse	logical. Whether to return the base matrix of the inverse covariance matrix (ie the base matrix for the precision matrix), default is FALSE

Value

the base matrix of a block circulant matrix representing a stationary covariance function on a toral grid.

lgcp documentation built on Oct. 3, 2023, 5:08 p.m.