public static PieChartData generateDummyData() {
        final int numValues = 4;
        PieChartData data = new PieChartData();
        List<SliceValue> values = new ArrayList<SliceValue>(numValues);
        values.add(new SliceValue(40f));
        values.add(new SliceValue(20f));
        values.add(new SliceValue(30f));
        values.add(new SliceValue(50f));
        data.setValues(values);
        return data;
    }
Data for PieChart, by default it doesn't have axes.
hellocharts-library/src/lecho/lib/hellocharts/model/PieChartData.java