rowMAFs: Rowwise Minor Allele Frequency
In scrime: Analysis of High-Dimensional Categorical Data Such as SNP Data

Computes for each SNP represented by a row of a matrix the frequency of the minor allele.

1	rowMAFs(x, check = TRUE)

`x`	a matrix in which each row represents a SNP and each column a subject, where the genotypes of each SNP are coded by 1 (for the homozygous reference genotype), 2 (heterozygous), and 3 (homozygous variant). NAs are also allowed.
`check`	should it be checked if the matrix contains values differing from 1, 2, and 3? It is highly recommended to leave `check = TRUE`. Setting `check = FALSE` reduces the computation time only slightly.