title: The kinship2 R package for pedigree data.
abstract: BACKGROUND
  The kinship2 package is restructured from the previous kinship package. Existing features are now enhanced and new features added for handling pedigree objects.
  
  
  METHODS
  Pedigree plotting features have been updated to display features on complex pedigrees while adhering to pedigree plotting standards. Kinship matrices can now be calculated for the X chromosome. Other methods have been added to subset and trim pedigrees while maintaining the pedigree structure.
  
  
  CONCLUSIONS
  We make the kinship2 package available for R on the Contributed R Archives Network (CRAN), where data management is built-in and other packages can use the pedigree object.
authors: Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, Minn., USA.
authors: Jason P
authors: JP
authors: Sinnwell
authors: Terry M
authors: TM
authors: Therneau
authors: Daniel J
authors: DJ
authors: Schaid
mesh_terms: D005260:Female; D008040:Genetic Linkage; D006801:Humans; D008297:Male; D010375:Pedigree; D011381:Programming Languages