//use a table to position charts.
JsObject axes = JsObject.one("percentage", AxisConfig.create().axisType("numeric"));
CartesianChartConfig chartConfig = CartesianChartConfig.create().cast();
chartConfig.categoryKey("date");
chartConfig.dataProvider(data1);
chartConfig.render("#chart1");
chartConfig.legend(legendConfig1);
chartConfig.axe("category", AxisConfig.create().
keys(new String[]{"date"}).
styles(AxisStyle.create().