def __load(self, verbose=False):
byChrom = {}<EOL>for e in wigIterator(self.filename, verbose=verbose):<EOL><INDENT>if e.chrom not in byChrom:<EOL><INDENT>byChrom[e.chrom] = []<EOL><DEDENT>byChrom[e.chrom].append(e)<EOL><DEDENT>for chrom in byChrom:<EOL><INDENT>self.itrees[chrom] = IntervalTree(byChrom[chrom], openEnded=True)<EOL><DEDENT>
@summary: load the contents of a wig file into this object