metric-2d – Metric based models in two dimensions

Description

metric-2d: metric based variance model functions in two dimensions.

Usage

iexp(x, y, init=NA)
iexpv(x, y, init=NA)
iexph(x, y, init=NA)
aexp(x, y, init=NA)
aexpv(x, y, init=NA)
aexph(x, y, init=NA)
igau(x, y, init=NA)
igauv(x, y, init=NA)
igauh(x, y, init=NA)
agau(x, y, init=NA)
agauv(x, y, init=NA)
agauh(x, y, init=NA)
ieuc(x, y, init=NA)
ieucv(x, y, init=NA)
ieuch(x, y, init=NA)
ilv(x, y, init=NA)
ilvv(x, y, init=NA)
ilvh(x, y, init=NA)
sph(x, y, init=NA)
sphv(x, y, init=NA)
sphh(x, y, init=NA)
cir(x, y, init=NA)
cirv(x, y, init=NA)
cirh(x, y, init=NA)

Arguments

`x`	An object in `data` containing the x coordinates.
`y`	An object in `data` containing the y coordinates.
`init`	An optional vector of initial values (power parameters followed by variance parameters) with an optional `names` attribute from the set {P, U, F} specifying the boundary constraint as positive, unconstrained or fixed, respectively.

Details

Includes two two dimensional isotropic exponential, gaussian, euclidean, linear variance, spherical and circular power models (iexp, igau, ieuc, ilv, sph, cir), anisotropic exponential and gaussian models (aexp, agau) and the Matern class (mtrn).

Functions

`asr_iexpv:`	Homogeneous variance form.
`asr_iexph:`	Heterogeneous variance form.
`asr_aexp:`	Anisotropic exponential variance model.
`asr_aexpv:`	Anisotropic exponential variance model, homogeneous variance form.
`asr_aexph:`	Anisotropic exponential variance model, heterogeneous variance form.
`asr_igau:`	Isotropic Gaussian variance model.
`asr_igauv:`	Isotropic Gaussian variance model, homogeneous variance form.
`asr_igauh:`	Isotropic Gaussian variance model, heterogeneous variance form.
`asr_agau:`	Anisotropic Gaussian variance model.
`asr_agauv:`	Anisotropic Gaussian variance model, homogeneous variance form.
`asr_agauh:`	Anisotropic Gaussian variance model, heterogeneous variance form.
`asr_ieuc:`	Isotropic Euclidean variance model.
`asr_ieucv:`	Isotropic Euclidean variance model, homogeneous variance form.
`asr_ieuch:`	Isotropic Euclidean variance model, heterogeneous variance form.
`asr_ilv:`	Isotropic linear variance model.
`asr_ilvv:`	Isotropic linear variance model, homogeneous variance form.
`asr_ilvh:`	Isotropic linear variance model, heterogeneous variance form.
`asr_sph:`	Spherical variance model.
`asr_sphv:`	Spherical variance model, homogeneous variance form.
`asr_sphh:`	Spherical variance model, heterogeneous variance form.
`asr_cir:`	Circular variance model.
`asr_cirv:`	Circular variance model, homogeneous variance form.
`asr_cirh:`	Circular variance model, heterogeneous variance form.

Updated on August 9, 2018

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