An S3 class for representing information on massive SNP arrays.

Details

A named list with at least 4 slots:

genotypes

A FBM.code256 which is a special Filebacked Big Matrix encoded with type raw (one byte unsigned integer), representing genotype calls and possibly imputed allele dosages. Rows are individuals and columns are SNPs.

fam

A data.frame containing some information on the SNPs (read from a ".fam" file).

map

A data.frame giving some information on the individuals (read from a ".bim" file).

See also