Resize GenomicRanges upstream and or downstream. From https://support.bioconductor.org/p/78652/
Extend(x, upstream = 0, downstream = 0, from.midpoint = FALSE)A range
Length to extend upstream
Length to extend downstream
Count bases from region midpoint, rather than the 5' or 3' end for upstream and downstream respectively.
Returns a GRanges object
Extend(x = blacklist_hg19, upstream = 100, downstream = 100)
#> Warning: '*' ranges were treated as '+'
#> GRanges object with 834 ranges and 1 metadata column:
#> seqnames ranges strand | reason
#> <Rle> <IRanges> <Rle> | <character>
#> [1] chr10 38726100-42489200 * | High Signal Region
#> [2] chr10 42524800-42819300 * | High Signal Region
#> [3] chr10 98560300-98562600 * | High Signal Region
#> [4] chr10 135437500-135534800 * | High Signal Region
#> [5] chr11 -100-196400 * | High Signal Region
#> ... ... ... ... . ...
#> [830] chrX 154528800-154616400 * | High Signal Region
#> [831] chrX 155038400-155270600 * | High Signal Region
#> [832] chrY 7432600-13491100 * | High Signal Region
#> [833] chrY 13633300-14289100 * | High Signal Region
#> [834] chrY 28783300-59373600 * | High Signal Region
#> -------
#> seqinfo: 24 sequences from an unspecified genome; no seqlengths