sommer (version 4.1.1)

pedtoK: Pedigree to matrix

Description

This function creates takes the inverse of the asreml Ainverse function (ginv element) and creates the additive relationship matrix to use it as a covariance matrix for a random effect. Other packages that allows you to obtain an additive relationship matrix from a pedigree is the `pedigreemm` package.

Usage

pedtoK(x, row="Row",column="Column",value="Ainverse", returnInverse=TRUE)

Arguments

x

ginv element, output from the Ainverse function.

row

name of the column in x that indicates the row in the original relationship matrix.

column

name of the column in x that indicates the column in the original relationship matrix.

value

name of the column in x that indicates the value for a given row and column in the original relationship matrix.

returnInverse

a TRUE/FALSE value indicating if the inverse of the x matrix should be computed once the data frame x is converted into a matrix.

Value

K

pedigree transformed in a relationship matrix.

Kinv

inverse of the pedigree transformed in a relationship matrix.

References

Covarrubias-Pazaran G (2016) Genome assisted prediction of quantitative traits using the R package sommer. PLoS ONE 11(6): doi:10.1371/journal.pone.0156744

See Also

The core functions of the package mmer

Examples

# NOT RUN {
# Ks <- pedtoK(asreml.model$ginv)
# A <- Ks$K

# }