Applies function elementwise

        Wrapper around the :meth:`pandas.DataFrame.applymap` method.

def applymap(self, *args, **kwargs):
        """Applies function elementwise

        Wrapper around the :meth:`pandas.DataFrame.applymap` method.
        """
        return self.__class__(self._frame.applymap(*args, **kwargs),
                              metadata=self.metadata,
                              _metadata=self._metadata)