chrIndices {genoset} | R Documentation

## 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)

    ## S4 method for signature '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

[Package genoset version 1.45.1 Index]