InvientCharts chart = new InvientCharts(chartConfig);
XYSeries seriesData = new XYSeries("Tokyo");
seriesData.setSeriesPoints(getPoints(seriesData, 7.0, 6.9, 9.5, 14.5,
18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6));
chart.addSeries(seriesData);
seriesData = new XYSeries("New York");
seriesData.setSeriesPoints(getPoints(seriesData, -0.2, 0.8, 5.7, 11.3,
17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5));
chart.addSeries(seriesData);