A one or 2 letter character string (e.g, "1", "X", "Y",
"MT", "XY")
intChrom
An integer vector with values 1-25 possible
Value
integer2chromosome returns a vector of character string
indicating the chromosome the same length
as intChrom. chromosome2integer returns a vector of
integers the same length as the number of elements in the chrom vector.
Details
This is useful when sorting SNPs in an object by chromosome and
physical position -- ensures that the sorting is done in the same way
for different objects.