def _write(self):
        anchors = []
        for idx, obj in enumerate(self.charts + self.images, 1):
            if isinstance(obj, ChartBase):
                rel = Relationship(type="chart", target='../charts/chart%s.xml' % obj._id)
                row, col = coordinate_to_tuple(obj.anchor)
                anchor = OneCellAnchor()
                anchor._from.row = row -1
                anchor._from.col = col -1
                anchor.ext.width = cm_to_EMU(obj.width)
                anchor.ext.height = cm_to_EMU(obj.height)
                anchor.graphicFrame = self._chart_frame(idx)
            elif isinstance(obj, Image):
                rel = Relationship(type="image", target='../media/image%s.png' % obj._id)
                anchor = obj.drawing.anchor
                anchor.pic = self._picture_frame(idx)

            anchors.append(anchor)
            self._rels.append(rel)

        self.oneCellAnchor = anchors

        tree = self.to_tree()
        tree.set('xmlns', SHEET_DRAWING_NS)
        return tree
re-initializes data for the next stats time interval
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/openpyxl-2.3.0-b2/openpyxl/drawing/spreadsheet_drawing.py/SpreadsheetDrawing._write--crossover with--dataset/ETHPy150Open los-cocos/cocos/cocos/fps.py/FpsDisplaySimple.complete_refresh