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Add a maternal line ID variable to a pedigree

Source: R/buildPedigree.R
ped2maternal.Rd

Add a maternal line ID variable to a pedigree

Usage

ped2maternal(
  ped,
  personID = "ID",
  momID = "momID",
  dadID = "dadID",
  matID = "matID"
)

Arguments

ped

a pedigree dataset. Needs ID, momID, and dadID columns

personID

character. Name of the column in ped for the person ID variable

momID

character. Name of the column in ped for the mother ID variable

dadID

character. Name of the column in ped for the father ID variable

matID

Character. Maternal line ID variable to be created and added to the pedigree

Details

Under various scenarios it is useful to know which people in a pedigree belong to the same maternal lines. This function first turns a pedigree into a graph where adjacency is defined by mother-child relationships. Subsequently, the weakly connected components algorithm finds all the separate maternal lines and gives them an ID variable.

See also

[ped2fam()] for creating extended family IDs, and [ped2paternal()] for creating paternal line IDs