emxGeneticFactorComponent: Creates component for a Genetic Factor Model

In EasyMx: Easy Model-Builder Functions for 'OpenMx'

Creates component for a Genetic Factor Model

Description

This function creates all the objects needed for Genetic Factor component

Usage

emxGeneticFactorComponent(x, xname, xvalues=.8, xfree=TRUE, xlbound=NA, xubound=NA,
                          h=2, hname=paste0('H', xname), hvalues, hlabels)

Arguments

x	character vector. The base names of the variables used for the matrix with no repetition for twins (x, y, z not x1, y1, z1, x2, y2, z2).
xname	character. Name of the component matrix.
xvalues	numeric vector. Values of the genetic factor loadings.
xfree	logical vector. Whether the genetic factor loadings are free.
xlbound	numeric vector. Lower bounds of the factor loadings.
xubound	numeric vector. Upper bounds of the factor loadings.
h	numeric. The number of variables for the relatedness matrix, i.e. the number of critters with relationships
hname	character. Name of the relatedness matrix.
hvalues	numeric vector. Values for the relatedness matrix.
hlabels	character vector. Labels for the relatedness matrix.

Details

This function is a combination of emxGeneticFactorVariance, emxRelatednessMatrix, and emxKroneckerVariance.

Value

A list with elements (1) the genetic factor loadings matrix, (2) the full positive definite variance matrix, (3) the relatedness matrix, and (4) the Kronecker product of the variance matrix and the relatedness matrix.

See Also

emxCholeskyComponent

Examples

   
# Create genetic factor A component for DZ twins
require(EasyMx)
xvars <- paste0('x', 1:4)
acomp <- emxGeneticFactorComponent(xvars, 'A', hvalues=c(1, .5, 1))

EasyMx documentation built on Feb. 16, 2023, 7:27 p.m.