public void loadNumStacks() {
    List<Column> cols = new ArrayList<>();
    for (MatchData m : team.getMatchData()) {
      List<SubcolumnValue> subCols = new ArrayList<>();
      SubcolumnValue auton = new SubcolumnValue(m.autonYellowTotes).setLabel("m" + m.matchNo);
      auton.setColor(getResources().getColor(R.color.accent));
      subCols.add(auton);
      cols.add(new Column(subCols).setHasLabels(true));
    }

    ColumnChartData data = new ColumnChartData(cols).setBaseValue(0).setStacked(true);
    data.setAxisYLeft(new Axis().setHasLines(true).setName("Yellow totes stacked"));
    data.setAxisXBottom(new Axis().setName("Match"));

    autonTotes.setColumnChartData(data);
  }
 @Override
 public void onValueSelected(int columnIndex, int subcolumnIndex, SubcolumnValue value) {
   generateLineData(value.getColor(), 100);
 }