find_phi: Find phi parameter for the Exponential spatial...

In lcgodoy/smile: Spatial Misalignment: Interpolation, Linkage, and Estimation

Find phi parameter for the Exponential spatial auto-correlation function

Description

Function designed to find the phi parameter such that the correlation between points within a given distance d is at most a given value.

Usage

find_phi(
  d,
  nu,
  kappa,
  mu2,
  family = "matern",
  range = c(1e-04, 1000),
  cut = 0.05
)

Arguments

d	maximum distance for spatial dependence equal to cut.
nu	smoothness parameter associated with the Matern cov. function.
kappa	one of the smoothness parameters associated with the Generalized Wendland covariance function
mu2	one of the smoothness parameters associated with the Generalized Wendland covariance function
family	covariance function family, the options are c("matern", "gw", "cs", "spher", "pexp", "gaussian").
range	Minimum and maximum distance to be considered. The default is range = c(1e-04, 1000).
cut	desired spatial correlation at a distance d, the default is cut = .05.

Value

a numeric value indicating the range parameter such that the spatial correlation between two points at distance d is cut.

lcgodoy/smile documentation built on Nov. 20, 2024, 12:17 a.m.