geoR (version 1.9-4)

sample.prior: Sample the prior distribution

Description

Sample quadruples \((\beta, \sigma^2, \phi, \tau^2_{rel})\) from the prior distribution of parameters specifying a Gaussian random field. Typically the prior is specified in the same manner as when calling krige.bayes.

Usage

sample.prior(n, kb.obj=NULL, prior=prior.control())

Value

A \(p+3 \times 4\) data-frame with a sample of the prior distribution of model parameters, where \(p\) is the length of the mean parameter \(\beta\).

Arguments

n

number of samples

kb.obj

on object with an output of krige.bayes.

prior

an call to prior.control. Unnecessary if kb.obj is provided.

Author

Paulo J. Ribeiro Jr. ,
Peter J. Diggle .

References

Further information on the package geoR can be found at:
http://www.leg.ufpr.br/geoR/.

See Also

krige.bayes and sample.posterior.

Examples

sample.prior(50, 
             prior=prior.control(beta.prior = "normal", beta = .5, beta.var.std=0.1, 
                                 sigmasq.prior="sc", sigmasq=1.2, df.sigmasq= 2, 
                                 phi.prior="rec", phi.discrete = seq(0,2, l=21)))