public static BarChart<String, Number> chart(
String title,
StringColumn x,
NumberColumn y) {
final CategoryAxis xAxis = new CategoryAxis();
final NumberAxis yAxis = new NumberAxis();
xAxis.setLabel(x.name());
yAxis.setLabel(y.name());
Table t = Table.create("", x, y);
t = t.sortDescendingOn(y.name());
final BarChart<String, Number> bar = new BarChart<>(xAxis, yAxis);
bar.setTitle(title);
List<XYChart.Data<String, Number>> d2 = new ArrayList<>(x.size());
for (int i = 0; i < x.size(); i++) {
d2.add(new XYChart.Data<>(t.stringColumn(0).get(i), t.nCol(1).get(i)));
}
XYChart.Series<String, Number> series1
= new XYChart.Series<>(FXCollections.observableList(d2));
series1.setName(y.name());
bar.setLegendVisible(false);
bar.setCategoryGap(0.0);
bar.setBarGap(0.1);
bar.setBackground(Background.EMPTY);
bar.setVerticalGridLinesVisible(false);
bar.getData().add(series1);
return bar;
}