RangedData imported
from a BED file.
blocks(x, ...)RangedData or
GenomicRanges, with a value column of name blocks
and of type RangesList. Such an object is returned by
import.bed and asBED.
GRangesList with an
element for each range in x. The original block ranges are
relative to the start of the containing range, so the returned ranges
are shifted to absolute coordinates. The seqname and strand are
inherited from the containing range.
import.bed for importing a track from BED, which
can store block information; asBED for coercing a
GenomicRanges into a BED-like structure that can be passed to
this function.