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Intrinsic Matern rSPDE model object for INLA

Source: R/inla_rspde_intrinsic.R
rspde.matern.intrinsic.Rd

Creates an INLA object for a stationary intrinsic Matern model. Currently, alpha is fixed to 2 and beta is fixed to 1.

Usage

rspde.intrinsic.matern(
  mesh,
  alpha = 2,
  mean.correction = FALSE,
  prior.lkappa.mean = NULL,
  prior.ltau.mean = 1,
  prior.lkappa.prec = 0.1,
  prior.ltau.prec = 0.1,
  start.ltau = NULL,
  start.lkappa = NULL,
  true.scaling = TRUE,
  diagonal = 0,
  debug = FALSE,
  shared_lib = "detect",
  ...
)

Arguments

mesh

The mesh to build the model. It can be an inla.mesh or an inla.mesh.1d object. Otherwise, should be a list containing elements d, the dimension, C, the mass matrix, and G, the stiffness matrix.

alpha

Smoothness parameter, need to be 1 or 2.

mean.correction

Add mean correction for extreme value models?

prior.lkappa.mean

Prior on log kappa to be used for the priors and for the starting values.

prior.ltau.mean

Prior on log tau to be used for the priors and for the starting values.

prior.lkappa.prec

Precision to be used on the prior on log kappa to be used for the priors and for the starting values.

prior.ltau.prec

Precision to be used on the prior on log tau to be used for the priors and for the starting values.

start.ltau

Starting value for log of tau.

start.lkappa

Starting value for log of kappa.

true.scaling

Compute the true normalizing constant manually? Default TRUE. The alternative is to set this to FALSE and set the diagonal argument to some small positive value. In the latter case, the model is approximated by a non-intrinsic model with a precision matrix that has the diagonal value added to the diagonal.

diagonal

Value of diagonal correction for INLA stability. Default 0.

debug

INLA debug argument

shared_lib

Which shared lib to use for the cgeneric implementation? "detect" and "INLA" prefer the model compiled into the INLA binary and fall back to a compiled local rSPDE library when the symbol is unavailable. "rSPDE" requires the local library. An existing .so or .dll path can also be supplied directly.

...

Only being used internally.

Value

An INLA model.