read.plink.binary: Read PLINK binary file.
In bowenwang7/r3: Realized Relatedness Estimation and Simulation

Description Usage Arguments Details Value

read.plink.binary reads PLINK binary .bed file and the corresponding .bim and .fam file.

1	read.plink.binary(bed, bim = NULL, fam = NULL, na.strings = c("0", "-9"))

`bed, bim, fam`	PLINK files with appropriate extensions.
`na.strings`	string vector, text entries to be treated as NA's.

When the three files have the same name, only the .bed file needs to be specified.

A list of three elements: genotype, fam and map. To be consistent with PLINK .bed file, genotype is a n_subject by n_marker matrix of counts of reference alleles. Missing values are -9. fam is a dataframe that contains the first six columns of a PLINK .ped file. map is a dataframe that contains the four columns of a PLINK .map file, with two additional columns: allele_1 for the reference allele type, allele_2 for the alternate allele type.