private void onChartDataOrSizeChanged() {
        initAxis(chart.getChartData().getAxisXTop(), TOP);
        initAxis(chart.getChartData().getAxisXBottom(), BOTTOM);
        initAxis(chart.getChartData().getAxisYLeft(), LEFT);
        initAxis(chart.getChartData().getAxisYRight(), RIGHT);
    }
Buffers for auto-generated values for each axis, used only if there are auto axes.
hellocharts-library/src/lecho/lib/hellocharts/renderer/AxesRenderer.java