A review of BEDMatrix (1.3.0)

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R package

redgage- BEDMatrix is an S3 class that behaves similarly to a regular matrix by implementing key methods such as [,dim, and dimnames. Subsets are extracted directly and on-demand from the binary PED file without loading the entire file into memory through memory mapping. The subsets are coded similarly to RAW files generated with the --recodeA argument in PLINK:0 indicates homozygous major allele,1 indicates heterozygous, and 2 indicates homozygous minor allele.