BarChart and LineChart support autoranging axis, e.g. provide "new CategoryAxis()" to chart constructor. The same does not work with StackedBarChart. An attempt to do this will produce the following NPE:

Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:399)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:47)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:115)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at java.util.ArrayList.addAll(Unknown Source)
at javafx.scene.chart.StackedBarChart.updateAxisRange(StackedBarChart.java:360)
at javafx.scene.chart.XYChart.layoutChartChildren(XYChart.java:619)
at javafx.scene.chart.Chart$1.layoutChildren(Chart.java:81)
at javafx.scene.Parent.layout(Parent.java:999)
at javafx.scene.Parent.layout(Parent.java:1009)
at javafx.scene.Parent.layout(Parent.java:1009)
at javafx.scene.Scene.layoutDirtyRoots(Scene.java:492)
at javafx.scene.Scene.doLayoutPass(Scene.java:465)
at javafx.scene.Scene.preferredSize(Scene.java:1233)
at javafx.scene.Scene.impl_initPeer(Scene.java:630)
at javafx.stage.Window$10.invalidated(Window.java:701)
at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:129)
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:163)
at javafx.stage.Window.setShowing(Window.java:768)
at javafx.stage.Window.show(Window.java:783)
at javafx.stage.Stage.show(Stage.java:207)
at mint.javafx.dashboard.chart.ReportTest.start(ReportTest.java:43)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:315)
at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:174)
at com.sun.javafx.application.PlatformImpl$3.run(PlatformImpl.java:141)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:62)
... 1 more

Example code: simply use the stacked barchart example from ensemble, with

      CategoryAxis xAxis = new CategoryAxis();

instead of

      CategoryAxis xAxis = CategoryAxisBuilder.create()
          .categories(FXCollections.<String>observableArrayList(years)).build();