allele.freq {IFP}

Allele Frequency Computation from Genotype Data

Description

Computes allele frequencies from genotype data.

Usage

 allele.freq(geno)

Arguments

geno

matrix of alleles, such that each locus has a pair of adjacent columns of alleles, and the order of columns corresponds to the order of loci on a chromosome. If there are K loci, then ncol(geno) = 2*K. Rows represent the alleles for each subject. Each allele shoud be represented as numbers (A=1,C=2,G=3,T=4).

Value

array of allele frequencies of each SNP. The computed allele is targeted as an order of alleles, "A", "C", "G", and "T".

Examples

 data(apoe)
 allele.freq(apoe7)
 allele.freq(apoe)