findfamilies {PCFAM}

Find families

Description

This function searches for pairs of individuals with high kinship based on the genotype correlation matrix.

Usage

findfamilies(x, threshold = 0.4)

Arguments

x

The nxn correlation matrix of the input dataset.

threshold

This threshold is used to identify close-degree relatives. Recommended values are 0.4 to identify first-degree relatives, and 0.15 to identify first- and second-degree relatives.

Value

Output numerical family ID for each individual. Individuals with the same ID are judged to be family members.

Author(s)

Yi-Hui Zhou

References

Computation of ancestry scores with mixed families and unrelated individuals. arXiv:1606.08416.