wendland1 {demu}

Calculate the correlation matrix according to the Wendland1 model.

Description

wendland1() is a helper function that constructs a correlation matrix according to the Wendland 1 model with lengthscales given by the parameter vector theta. The design must have been already formated in distlist format using the function makedistlist().

Usage

wendland1(l.d,theta)

Arguments

l.d

Current design distance matrices in distlist format

theta

A vector of range parameters

Value

A list containing the constructed correlation matrix.

See Also

demu-package rhomat matern32 matern52 wendland2 generalized.wendland

Examples

library(demu)

design=matrix(runif(10,0,1),ncol=2,nrow=5)
theta=rep(0.3,2)
l.d=makedistlist(design)
R=wendland1(l.d,theta)$R
R