spcovariance: Spatial variance-covariance matrix

In geoBayes: Analysis of Geostatistical Data using Bayes and Empirical Bayes Methods

Spatial variance-covariance matrix

Description

Calculates the spatial variance-covariance matrix for a selection of correlation functions.

Usage

spcovariance(...)

## S3 method for class 'formula'
spcovariance(
  formula,
  data,
  subset,
  corrfcn,
  ssq,
  phi,
  omg,
  kappa,
  longlat = FALSE,
  ...
)

## S3 method for class 'numeric'
spcovariance(x, corrfcn, ssq, phi, omg, kappa, ...)

## S3 method for class 'dist'
spcovariance(x, corrfcn, ssq, phi, omg, kappa, ...)

Arguments

...	Further arguments. Not currently in use.
formula	A formula of the form ~ Xcoord + Ycoord specifying the sampled locations.
data	An optional data frame containing the variables in the model.
subset	An optional set of indices. The covariance will be calculated for those coordinates only.
corrfcn	The correlation function to use.
ssq	The partial sill parameter.
phi	The spatial range parameter.
omg	The relative nugget parameter.
kappa	The spatial smoothness parameter.
longlat	How to compute the distance between locations. If FALSE, Euclidean distance, if TRUE Great Circle distance. See spDists.
x	A numerical object of distances.

Value

For a formula input, a variance-covariance matrix. For a numeric input, an object of the the same dimensions as its first input.

geoBayes documentation built on Aug. 21, 2023, 9:08 a.m.