RMeaxxa: Special models for rotation like fields

In RandomFields: Simulation and Analysis of Random Fields

Description

RMeaxxa and RMetaxxa define the auxiliary functions

C(h) = h^T A A^T h + diag(E)

and

C(h) = h^T A R R^R A^T h + diag(E),

respectively.

Usage

RMeaxxa(E, A) 
RMetaxxa(E, A, alpha)

Arguments

E	m-variate vector of positive values
A	m x k matrix
alpha	angle for the rotation matrix R

Details

RMeaxxa is defined in space and returns an m-variate model.

RMetaxxa is a space-time model with two spatial dimensions. The matrix R is a rotation matrix with angle β t where t is the time component.

Value

RMeaxxa and RMetaxxa return an object of class RMmodel.

References

• Schlather, M. (2010) On some covariance models based on normal scale mixtures. Bernoulli, 16, 780-797.

See Also

RMmodel, S10

Examples

# see S10

RandomFields documentation built on Jan. 19, 2022, 1:06 a.m.