public static ComboLineColumnChartData generateDummyData() {
        ComboLineColumnChartData data = new ComboLineColumnChartData();
        data.setColumnChartData(ColumnChartData.generateDummyData());
        data.setLineChartData(LineChartData.generateDummyData());
        return data;
    }
Data model for combo line-column chart. It uses ColumnChartData and LineChartData internally.
hellocharts-library/src/lecho/lib/hellocharts/model/ComboLineColumnChartData.java