* selection in the bar chart thus determines the content of the
* scatter plot and pie chart (click bars in the bar chart to remove
* them from scatter plot & pie chart - these are empty/invisible at
* first)
*/
HighlightingModel hoverModel = new HighlightingModel();
SelectionModel selectionModel = new DefaultSelectionModel(
new IncrementingSuffixLabelFactory(""),
new DefaultResourceSetFactory());
SelectionModel selectionModel2 = new DefaultSelectionModel(
new IncrementingSuffixLabelFactory(""),