Simulating GRFs
A GRF can be simulated using geoR::grf()
.
Some arguments:
n
: the number of points in the simulation.grid
: either"reg"
(simulate in a regular grid) or"irreg"
(simulate in coordinates).xlims
,ylims
: limits of the area in the x and y directions. Defaultc(0, 1)
.cov.model
: type of correlation function (e.g."matern"
)cov.pars
: covariance parameters \(\sigma^2\) and \(\phi\)kappa
= smoothness parameter \(\nu\) required by some correlation functions such as"matern"
. Default is 0.5.