Simulation of space-time models — simulate.spacetimeobj • rSPDE

Simulation of space-time models

Usage

# S3 method for class 'spacetimeobj'
simulate(
  object,
  nsim = 1,
  seed = NULL,
  user_kappa = NULL,
  user_sigma = NULL,
  user_gamma = NULL,
  user_rho = NULL,
  ...
)

Arguments

object: Space-time object created by spacetime.operators()
nsim: The number of simulations.
seed: an object specifying if and how the random number generator should be initialized (‘seeded’).
user_kappa: kappa parameter if it should be updated
user_sigma: sigma parameter if it should be updated
user_gamma: gamma parameter if it should be updated
user_rho: rho parameter if it should be updated
...: Currently not used.

Value

A matrix with the simulations as columns.

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)
x <- simulate(op_cov, nsim = 1) 
image(matrix(x, nrow = length(s), ncol = length(t)))