An extension to GRanges for representing SNPs
Constructor for SnpGRanges class
SnpGRanges(object = GRanges(), isSnp, ...)
## S4 method for signature 'missing'
## S4 method for signature 'GRanges'
A GRanges object
A logical vector. Each genomic interval in the
GRanges container corresponds to a marker on the genotyping
array. isSnp is FALSE for nonpolymorphic markers such as
those included on the Affymetrix 6.0 chips.
g <- GRanges("chr1", IRanges(15L, 15L))
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