Pedigree-based Relatedness Coefficients

Recursive algorithms for computing various relatedness coefficients, including pairwise kinship, kappa and identity coefficients. Both autosomal and X-linked coefficients are computed. Founders are allowed to be inbred, enabling construction of any given kappa coefficients (Vigeland (2020) ). In addition to the standard pairwise coefficients, 'ribd' also computes a range of lesser-known coefficients, including generalised kinship coefficients (Karigl (1981) ; Weeks and Lange (1988) ), two-locus coefficients (Thompson (1988) ) and multi-person coefficients. This package is part of the 'ped suite', a collection of packages for pedigree analysis in R. Several methods of 'ribd' are featured in the online app 'QuickPed' available at <>.


Reference manual

It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.


1.3.1 by Magnus Dehli Vigeland, 13 days ago,

Browse source code at

Authors: Magnus Dehli Vigeland [aut, cre]

Documentation:   PDF Manual  

GPL-3 license

Imports glue, kinship2, slam

Depends on pedtools

Suggests identity, testthat

Imported by forrel, ibdsim2, verbalisr.

Depended on by pedsuite.

See at CRAN