Precision matrices for SPDE models

Calculates the precision matrix for given parameter values based on an inla.spde model object.

inla.spde.precision(...)

inla.spde1.precision(spde, ...)

# S3 method for class 'inla.spde1'
inla.spde.precision(spde, ...)

inla.spde2.precision(
  spde,
  theta = NULL,
  phi0 = inla.spde2.theta2phi0(spde, theta),
  phi1 = inla.spde2.theta2phi1(spde, theta),
  phi2 = inla.spde2.theta2phi2(spde, theta),
  ...
)

# S3 method for class 'inla.spde2'
inla.spde.precision(
  spde,
  theta = NULL,
  phi0 = inla.spde2.theta2phi0(spde, theta),
  phi1 = inla.spde2.theta2phi1(spde, theta),
  phi2 = inla.spde2.theta2phi2(spde, theta),
  ...
)

Arguments

...

Additional parameters passed on to other methods.

spde

An inla.spde object.

theta

The parameter vector.

phi0

Internal parameter for a generic model. Expert option only.

phi1

Internal parameter for a generic model. Expert option only.

phi2

Internal parameter for a generic model. Expert option only.

Value

A sparse precision matrix.

See also

inla.spde.models(), inla.spde2.generic(), inla.spde2.theta2phi0(), inla.spde2.theta2phi1(), inla.spde2.theta2phi2()

Author

Finn Lindgren finn.lindgren@gmail.com