@cache_readonly<EOL><INDENT>def is_monotonic_increasing(self):<DEDENT>
<EOL>values = [self._get_level_values(i).values<EOL>for i in reversed(range(len(self.levels)))]<EOL>try:<EOL><INDENT>sort_order = np.lexsort(values)<EOL>return Index(sort_order).is_monotonic<EOL><DEDENT>except TypeError:<EOL><INDENT>return Index(self.values).is_monotonic<EOL><DEDENT>
return if the index is monotonic increasing (only equal or
increasing) values.