Pedigree-based Relatedness Coefficients
Table of pairwise relatedness coefficients
Condensed identity coefficients
Identity coefficients on X
Pedigree construction
Expected LR of a pairwise kinship test
Relatedness coefficients by other programs
Generalised kinship coefficients
Colourised IBD plot
IBD triangle plot
Omnibus function for identity coefficients
Inbreeding coefficients
IBD (kappa) coefficients
Degree of relationship
Kinship coefficients
Minimal IBD pattern
Multi-person IBD coefficients
Variance of realised relatedness coefficients
ribd: Pedigree-based Relatedness Coefficients
Add points to the IBD triangle
Two-locus IBD coefficients
Two-locus identity coefficients
Two-locus inbreeding
Two-locus kinship coefficients
Two-locus coefficient plot
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, which enables construction of any given kappa coefficients, as described in Vigeland (2020) <doi:10.1007/s00285-020-01505-x>. In addition to the standard coefficients, 'ribd' also computes a range of lesser-known coefficients, including generalised kinship coefficients, multi-person coefficients and two-locus coefficients (Vigeland, 2023, <doi:10.1093/g3journal/jkac326>). Many features of 'ribd' are available through the online app 'QuickPed' at <https://magnusdv.shinyapps.io/quickped>; see Vigeland (2022) <doi:10.1186/s12859-022-04759-y>.