RandomFields (version 3.1.16)

RMeaxxa: Special models for rotation like fields

Description

RMeaxxa and RMetaxxa define the auxiliary functions $$f(h) = h^\top A A^\top h + diag(E)$$ and $$f(h) = h^\top A R R A^\top h + diag(E)$$, 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 $R$

Value

RMeaxxa and RMetaxxa return an object of class RMmodel.

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 $\beta t$ where $t$ is the time component.

References

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

See Also

RMmodel, S10

Examples

# see S10