def getElement(self, chrom, point):
if chrom not in self.itrees:<EOL><INDENT>return None<EOL><DEDENT>hits = self.itrees[chrom].intersectingPoint(point)<EOL>if len(hits) == <NUM_LIT:0>:<EOL><INDENT>return None<EOL><DEDENT>if len(hits) > <NUM_LIT:1>:<EOL><INDENT>raise WigFileError("<STR_LIT>" +<EOL>str(chrom) + "<STR_LIT>" + str(point))<EOL><DEDENT>return hits[<NUM_LIT:0>]<EOL>
@summary: get the WigElement that is intersected by the given point
          returns None if there is no such element
@return:  a WigElement
@raise WigFileError: if more than one element intersects the point