genoset (version 1.28.2)

chrIndices: Get a matrix of first and last index of features in each chromosome

Description

Sometimes it is handy to know the first and last index for each chr. This is like chrInfo but for feature indices rather than chromosome locations. If chr is specified, the function will return a sequence of integers representing the row indices of features on that chromosome.

Usage

chrIndices(object, chr = NULL)
## S3 method for class 'GenoSetOrGenomicRanges':
chrIndices(object, chr = NULL)

Arguments

object

GenoSet or GRanges

chr

character, specific chromosome name

Value

• data.frame with "first" and "last" columns

Examples

data(genoset,package="genoset")
  chrIndices(genoset.ds)
  chrIndices(rowRanges(genoset.ds))  # The same