Generic spde2 model creation.

Creates and inla.spde2 object describing the internal structure of an 'spde2' model.

inla.spde2.generic(M0, M1, M2, B0, B1, B2, theta.mu, theta.Q,
                   transform = c("logit", "log", "identity"),
                   theta.initial = theta.mu,
                   fixed = rep(FALSE, length(theta.mu)),
                   theta.fixed = theta.initial[fixed],
                   BLC = cbind(0, diag(nrow = length(theta.mu))),
                   ...)

## Map theta values to internal phi values
inla.spde2.theta2phi0(spde, theta)
inla.spde2.theta2phi1(spde, theta)
inla.spde2.theta2phi2(spde, theta)

Arguments

M0

The symmetric M0 matrix.

M1

The square M1 matrix.

M2

The symmetric M2 matrix.

B0

Basis definition matrix for \(\phi_0\).

B1

Basis definition matrix for \(\phi_2\).

B2

Basis definition matrix for \(\phi_2\).

theta.mu

Prior expectation for the \(\theta\) vector

theta.Q

Prior precision for the \(\theta\) vector

transform

Transformation link for \(\phi_2\). Valid settings are "logit", "log", and "identity"

theta.initial

Initial value for the \(\theta\) vector. Default theta.mu

fixed

Logical vector. For every TRUE value, treat the corresponding theta value as known.

theta.fixed

Vector holding the values of fixed theta values. Default =theta.initial[fixed]

BLC

Basis definition matrix for linear combinations of theta.

...

Additional parameters, currently unused.

spde

An inla.sdpe2 object.

theta

parameter values to be mapped.

Value

For inla.spde2.generic, an inla.spde2 object.

For inla.spde2.theta2phi0/1/2, a vector of \(\phi\) values.

Author

Finn Lindgren finn.lindgren@gmail.com