Creating Charts in JavaFX - JavaFX 8: A Definitive Guide to Building Desktop, Mobile, and Embedded Java Clients - page 360

■ as discussed earlier regarding PieChart , we can use different patterns here. We used the JavaBeans pattern
in the examples, but we could also use properties.

Note

To create a ScatterChart , we need to create an xAxis and a yAxis . In our first simple implementation, we use
two instances of NumberAxis for this:

NumberAxis xAxis = new NumberAxis();
NumberAxis yAxis = new NumberAxis();

Apart from calling the following ScatterChart constructor, there is nothing different in this method than in the
case of the PieChart .

ScatterChart scatterChart = new ScatterChart(xAxis, yAxis);

Improving the Simple Implementation
One of the first observations when looking at Figure 8-5 is that all data plots in a series are almost rendered on top of
each other. The reason for this is clear: the x-Axis starts at 0 and ends at 2250. By default, the NumberAxis determines
its range automatically. We can overrule this behavior by setting the autoRanging property to false, and by providing
values for the lowerBound and the upperBound . If we replace the constructor for the xAxis in the original example by
the following code snippet,

NumberAxis xAxis = new NumberAxis();
xAxis.setAutoRanging(false);
xAxis.setLowerBound(2011);
xAxis.setUpperBound(2021);

the resulting output will look similar to that shown in Figure 8-7 .

Figure 8-7. Defining the behavior of the xAxis