Zoom-out for an intervals set.

Zoom-out for an intervals set.

Usage

gintervals.zoom_out(intervals, zoom)

Arguments

intervals

An intervals set.

zoom

the zoom-our factor.

Value

A new intervals set where the coordinates are c + round(l/2) and c - round(l/2) where l is the length of the interval multiplied by zoom, and c is the center of the interval. Note that the intervals remain bounded by the chromosome boundaries.

Examples

gdb.init_examples()
gintervals(1, 50, 150) %>% gintervals.zoom_out(2)
#>   chrom start end
#> 1  chr1     0 200