R: Basic Chromosomal Information for UCSC Human Genome Assembly...
chrominfo.Mb
R Documentation
Basic Chromosomal Information for UCSC Human Genome Assembly July 2003
freeze
Description
This dataset contains basic chromosomal information for UCSC Human
Genome Assembly July 2003 freeze.
Usage
chrominfo.basepair
Format
A data frame with 24 observations on the following 3 variables.
chrom
Chromosomal index, X is coded as 23 and Y as 24.
length
Length of each chromosome in megabases.
centromere
Location of the centromere on the chromosome (Mb).
Details
This file is used for many plotting functions. The centromeric location is
approximately estimated by taking mid-point between the last
fish-mapped clone on the p-arm and the first fish-mapped clone on the
q-arm using relevant UCSC freeze.
For an alternative freeze, one needs to manually create a 3-column
file of the format described above.