downstreams: Get downstream coordinates

In jianhong/ChIPpeakAnno: Batch annotation of the peaks identified from either ChIP-seq, ChIP-chip experiments, or any experiments that result in large number of genomic interval data

Get downstream coordinates

Description

Returns an object of the same type and length as x containing downstream ranges. The output range is defined as

Usage

downstreams(gr, upstream, downstream)

Arguments

gr	A GenomicRanges object
upstream, downstream	non-negative interges.

Details

(end(x) - upstream) to (end(x) + downstream -1)

for ranges on the + and * strand, and as

(start(x) - downstream + 1) to (start(x) + downstream)

for ranges on the - strand.

Note that the returned object might contain out-of-bound ranges.

Value

A GenomicRanges object

Examples

gr <- GRanges("chr1", IRanges(rep(10, 3), width=6), c("+", "-", "*"))
downstreams(gr, 2, 2)

jianhong/ChIPpeakAnno documentation built on Nov. 1, 2024, 8:55 a.m.