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
Kpedigree transformed in a relationship matrix.
Kinvinverse 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
Run this code# NOT RUN {
# Ks <- pedtoK(asreml.model$ginv)
# A <- Ks$K
# }
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