precision.intrinsicCBrSPDEobj: Get the precision matrix of intrinsicCBrSPDEobj objects

In rSPDE: Rational Approximations of Fractional Stochastic Partial Differential Equations

Get the precision matrix of intrinsicCBrSPDEobj objects

Description

Function to get the precision matrix of a intrinsicCBrSPDEobj object

Usage

## S3 method for class 'intrinsicCBrSPDEobj'
precision(
  object,
  kappa = NULL,
  tau = NULL,
  alpha = NULL,
  beta = NULL,
  ld = FALSE,
  ...
)

Arguments

object	The model object computed using intrinsic.matern.operators()
kappa	If non-null, update the range parameter.
tau	If non-null, update the precision parameter.
alpha	If non-null, update the alpha parameter.
beta	If non-null, update the beta parameter.
ld	If TRUE, return the log determinant of the precision matrix instead of the precision matrix. By default FALSE.
...	Currently not used.

Value

The precision matrix.

See Also

simulate.intrinsicCBrSPDEobj(), intrinsic.matern.operators()

Examples

if (requireNamespace("RSpectra", quietly = TRUE)) {
  x <- seq(from = 0, to = 10, length.out = 201)
  beta <- 1
  alpha <- 1
  kappa <- 1
  op <- intrinsic.matern.operators(
    kappa = kappa, tau = 1, alpha = alpha,
    beta = beta, loc_mesh = x, d = 1
  )
Q <- precision(op) 
}

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