varcovBGCCM: Covariance matrix for the bivariate Gaussian common component...

In geoR: Analysis of Geostatistical Data

Covariance matrix for the bivariate Gaussian common component geostatistical model

Description

Covariance matrix for the bivariate Gaussian common component geostatistical model or its inverse, and optionally the determinant of the matrix.

Usage

varcovBGCCM(dists.obj, cov0.pars, cov1.pars, cov2.pars,
            cov0.model = "matern", cov1.model = "matern",
            cov2.model = "matern", kappa0 = 0.5, kappa1 = 0.5,
            kappa2 = 0.5, scaled = TRUE, inv = FALSE, det = FALSE)

Arguments

dists.obj	a vector with distance values
cov0.pars	covarianve paremeter values for the common component
cov1.pars	covariance parameter for the individual structure of the first variable
cov2.pars	covariance parameter for the individual structure of the second variable
cov0.model	character indicating a valid correlation model
cov1.model	character indicating a valid correlation model
cov2.model	character indicating a valid correlation model
kappa0	scalar
kappa1	scalar
kappa2	scalar
scaled	logical
inv	logical. If TRUE the inverse of the covariance matrix is returned instead.
det	logical. Optional, if TRUE the logarithm of the detarminant of the covariance matrix is returned as an attribute.

Value

A matrix which is the covariance matrix for the bivariate Gaussian common component geostatistical model or its inverse if inv=TRUE. If det=T the logarithm of the determinant of the matrix is also returned as an attribute named logdetS.

Warning

This is a new function and still in draft format and pretty much untested.

Author(s)

Paulo J. Ribeiro Jr. [e-mail],
Peter J. Diggle [e-mail].

See Also

cov.spatial, varcov.spatial

Examples

# see http://www.leg.ufpr.br/geoR/tutorials/CCM.R

geoR documentation built on May 29, 2024, 1:36 a.m.