regioneR (version 1.4.0)

extendRegions: Extend Regions

Description

Extends the regions a number of bases at each end. Negative numbers will reduce the region instead of enlarging it.

Usage

extendRegions(A, extend.start=0, extend.end=0)

Arguments

A

a region set in any of the accepted formats by toGRanges (GenomicRanges, data.frame, etc...)

extend.start

an integer. The number of bases to be subtracted from the start of the region.

extend.end

an integer. The number of bases to be added at the end of the region.

Value

a GenomicRanges object with the extended regions.

See Also

plotRegions, toDataframe, toGRanges, subtractRegions, splitRegions, overlapRegions, commonRegions, mergeRegions, joinRegions

Examples

A <- data.frame("chr1", c(10, 20, 30), c(13, 28, 40))

extend1 <- extendRegions(A, extend.start=5, extend.end=2)

extend2 <- extendRegions(A, extend.start=15)

extend3 <- extendRegions(A, extend.start=-1)

plotRegions(list(A, extend1, extend2, extend3), chromosome="chr1", regions.labels=c("A", "extend1", "extend2", "extend3"), regions.colors=4:1)