def BinsFromBigWig(bwfile,binsize):
''' Read bins from BigWig file.'''
Bins={}
chroms=Utils.getBigWigChroms(bwfile)
for chrom in chroms:
Bins[chrom]=numpy.zeros(chroms[chrom]/binsize)
for start,stop,val in IO.BigWigReader(bwfile,chrom):
Bins[chrom][start/binsize]=val
return Bins
