set the values from this selection: take = take ownership

def convert(self, values, nan_rep, encoding, errors):
        """ set the values from this selection: take = take ownership """

        # values is a recarray
        if values.dtype.fields is not None:
            values = values[self.cname]

        values = _maybe_convert(values, self.kind, encoding, errors)

        kwargs = dict()
        if self.freq is not None:
            kwargs['freq'] = _ensure_decoded(self.freq)
        if self.index_name is not None:
            kwargs['name'] = _ensure_decoded(self.index_name)
        # making an Index instance could throw a number of different errors
        try:
            self.values = Index(values, **kwargs)
        except Exception:  # noqa: E722

            # if the output freq is different that what we recorded,
            # it should be None (see also 'doc example part 2')
            if 'freq' in kwargs:
                kwargs['freq'] = None
            self.values = Index(values, **kwargs)

        self.values = _set_tz(self.values, self.tz)

        return self