pedtoK {sommer} | R Documentation |
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.
pedtoK(x, row="Row",column="Column",value="Ainverse", returnInverse=TRUE)
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. |
K |
pedigree transformed in a relationship matrix. |
Kinv |
inverse of the pedigree transformed in a relationship matrix. |
Giovanny Covarrubias-Pazaran
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
The core functions of the package mmer
# Ks <- pedtoK(asreml.model$ginv) # A <- Ks$K