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) <10.1007>).
In addition to the standard pairwise coefficients, 'ribd' also
computes a range of lesser-known coefficients, including generalised
kinship coefficients (Karigl (1981)
<10.1111>; Weeks and Lange (1988)
coefficients (Thompson (1988) <10.1093>) 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