R: Metric-based variance models in two dimensions

metric-2D_vs {asreml}

R Documentation

Metric-based variance models in two dimensions

Description

Metric-based variance structures in two dimensions. Includes 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).

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.

Functions

asr_iexp(): Exponential (or power) model; correlation form.
asr_iexpv(): Exponential (or power) model; homogeneous variance form.
asr_iexph(): Exponential (or power) model; heterogeneous variance form.
asr_aexp(): Anisotropic exponential variance model; correlation form.
asr_aexpv(): Anisotropic exponential variance model; homogeneous variance form.
asr_aexph(): Anisotropic exponential variance model; heterogeneous variance form.
asr_igau(): Isotropic Gaussian variance model; correlation form.
asr_igauv(): Isotropic Gaussian variance model; homogeneous variance form.
asr_igauh(): Isotropic Gaussian variance model; heterogeneous variance form.
asr_agau(): Anisotropic Gaussian variance model; correlation form.
asr_agauv(): Anisotropic Gaussian variance model; homogeneous variance form.
asr_agauh(): Anisotropic Gaussian variance model; heterogeneous variance form.
asr_ieuc(): Isotropic Euclidean variance model; correlation form.
asr_ieucv(): Isotropic Euclidean variance model; homogeneous variance form.
asr_ieuch(): Isotropic Euclidean variance model; heterogeneous variance form.
asr_ilv(): Isotropic linear variance model; correlation form.
asr_ilvv(): Isotropic linear variance model; homogeneous variance form.
asr_ilvh(): Isotropic linear variance model; heterogeneous variance form.
asr_sph(): Spherical variance model; correlation form.
asr_sphv(): Spherical variance model; homogeneous variance form.
asr_sphh(): Spherical variance model; heterogeneous variance form.
asr_cir(): Circular variance model; correlation form.
asr_cirv(): Circular variance model; homogeneous variance form.
asr_cirh(): Circular variance model; heterogeneous variance form.

[Package asreml version 4.2.0.480 Index]