precision.spacetimeobj: Get the precision matrix of spacetimeobj objects

In rSPDE: Rational Approximations of Fractional Stochastic Partial Differential Equations

Get the precision matrix of spacetimeobj objects

Description

Function to get the precision matrix of a spacetimeobj object

Usage

## S3 method for class 'spacetimeobj'
precision(object, kappa = NULL, sigma = NULL, gamma = NULL, rho = NULL, ...)

Arguments

object	The model object computed using spacetime.operators()
kappa	If non-null, update the range parameter of the covariance function.
sigma	If non-null, update the standard deviation of the covariance function.
gamma	If non-null, update the temporal range parameter of the covariance function.
rho	If non-null, update the drift parameter of the covariance function.
...	Currently not used.

Value

The precision matrix.

See Also

simulate.spacetimeobj(), spacetime.operators()

Examples

s <- seq(from = 0, to = 20, length.out = 101)
t <- seq(from = 0, to = 20, length.out = 31)

op_cov <- spacetime.operators(space_loc = s, time_loc = t,
                             kappa = 5, sigma = 10, alpha = 1,
                             beta = 2, rho = 1, gamma = 0.05)
prec_matrix <- precision(op_cov)

rSPDE documentation built on Jan. 26, 2026, 9:06 a.m.