lavaSearch2 (version 1.4)

getIndexOmega2-internal: Extract the name of the endogenous variables

Description

Extract the name of the endogenous variables from a nlme model.

Usage

.getIndexOmega2(object, ...)
# S3 method for gls
.getIndexOmega2(object, param, attr.param, name.Y, cluster,
  levels.cluster, data)
# S3 method for lme
.getIndexOmega2(object, param, attr.param, name.Y, cluster,
  levels.cluster, data)

Arguments

object

a gls or lme object.

...

[internal] Only used by the generic method.

param

[numeric vector] the mean and variance coefficients.

attr.param

[character vector] the type of each coefficients (mean or variance).

name.Y

[character] name of the endogenous variable.

cluster

[integer vector] the grouping variable relative to which the observations are iid. Only required for gls models with no correlation argument.

data

[data.frame] the data set.

Value

A list containing:

• index.Omega: [list of integer vector] For each cluster of observations, the index of the endogenous variable relative to each observation.

• n.endogenous: [integer] the number of endogenous variables.

• name.endogenous: [character vector] the name of the endogenous variables.

• ref.group: [character vector] the levels of the variable defining the variance component in a generic covariance matrix.