has specified data input has specified data output implements has format specification is published by data item GeneticsPed http://bioconductor.org/packages/2.4/bioc/html/GeneticsPed.html Classes and methods for handling pedigree data. It also includes functions to calculate genetic relationship measures as relationship and inbreeding coefficients and other utilities. Note that package is not yet stable Nandini Badarinarayan Mixed model equations R data frame pedigree data file BioConductor Software R software Bioconductor