Pedigree and Genetic Groups

Calculates additive and dominance genetic relationship matrices and their inverses, in matrix and tabular-sparse formats. It includes functions for checking and processing pedigree, as well as functions to calculate the matrix of genetic group contributions (Q), and adding those contributions to the genetic merit of animals (Quaas (1988) ). Calculation of Q is computationally extensive. There are computationally optimized functions to calculate Q.


R package ggroups: Pedigree and Genetic Groups

Version: 1.1.4

  • The 1st official version on CRAN

Version: 1.2.0

  • Modified function rg for non-related individuals.
  • Added function mat2tab.
  • Added function offspring.
  • No backward incompatibility with the previous version

Version: 1.2.1

  • Added function tabD.
  • Added function tabDinv.

Reference manual

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1.2.1 by Mohammad Ali Nilforooshan, 5 months ago

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Browse source code at

Authors: Mohammad Ali Nilforooshan [aut, cre]

Documentation:   PDF Manual  

GPL-3 license

Suggests doParallel, foreach

See at CRAN