unstructured {asreml}R Documentation

General structure variance models.

Description

General correlation and covariance models.

Usage

cor(obj, init=NA)

corv(obj, init=NA)

corh(obj, init=NA)

corb(obj, b=1, init=NA)

corbv(obj, init=NA)

corbh(obj, init=NA)

corg(obj, init=NA)

corgv(obj, init=NA)

corgh(obj, init=NA)

diag(obj, init=NA)

us(obj, init=NA)

chol(obj, k=1, init=NA)

ante(obj, k=1, init=NA)

sfa(obj, k=1, init=NA)

facv(obj, k=1, init=NA)

fa(obj, k=1, init=NA)

rr(obj, k=1, init=NA)

Arguments

obj

A factor in data.

init

A vector of initial values (correlation 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.

b

Number of (sub-diagonal) bands in banded correlation models.

k

Order of the model (chol, ante) or number of factors (sfa, facv, fa, rr).

Details

The class of general variance models includes the simple, banded and general correlation models (cor, corb, corg), the diagonal, unstructured, Cholesky and antedependence variance models (diag, us, chol, cholc, ante) and the factor analytic structures (sfa, facv, fa).

Functions


[Package asreml version 4.1.0.106 Index]