The Excel worksheet reference to the Y values for *series* (not including the column label).
(self, series)
| 102 | return self._xml(chart_type).encode("utf-8") |
| 103 | |
| 104 | def y_values_ref(self, series): |
| 105 | """ |
| 106 | The Excel worksheet reference to the Y values for *series* (not |
| 107 | including the column label). |
| 108 | """ |
| 109 | return self._workbook_writer.y_values_ref(series) |
| 110 | |
| 111 | @property |
| 112 | def _workbook_writer(self): |