How to show only numbers that are divisible by tick unit on javafx chart axis

Question

Here's what I have now

As you can see, numbers on the left are not divisible by tick mark (in this situation by 50). I would like to see only numbers like 2950, 3000, 3050 etc. That includes top marker by the way (float up there is bothering me)

Answer 1

If the auto ranging function does not provide the values you require for tick marks, you can configure the tick range manually.

yAxis.setAutoRanging(false);
yAxis.setLowerBound(1000);
yAxis.setUpperBound(5000);
yAxis.setTickUnit(500);
yAxis.setMinorTickVisible(false);

Sample Application

Numbers on the Y Axis are only divisible by the tick unit (500) as specified for the axis. Also the upper and lower bounds of the Y Axis are explicitly set, providing exact control over these values.

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;

public class LineChartRanging extends Application {

    @Override public void start(Stage stage) {
        final NumberAxis xAxis = new NumberAxis();
        final NumberAxis yAxis = new NumberAxis();
        xAxis.setLabel("Number of Month");
        final LineChart<Number,Number> lineChart =
                new LineChart<>(xAxis, yAxis);

        XYChart.Series series = new XYChart.Series();
        series.setName("My portfolio");
        series.getData().add(new XYChart.Data(1, 2317));
        series.getData().add(new XYChart.Data(2, 1427));
        series.getData().add(new XYChart.Data(3, 1573));
        series.getData().add(new XYChart.Data(4, 2452));
        series.getData().add(new XYChart.Data(5, 3495));
        series.getData().add(new XYChart.Data(6, 3663));
        series.getData().add(new XYChart.Data(7, 2215));
        series.getData().add(new XYChart.Data(8, 4541));
        series.getData().add(new XYChart.Data(9, 4393));
        series.getData().add(new XYChart.Data(10, 1772));
        series.getData().add(new XYChart.Data(11, 2994));
        series.getData().add(new XYChart.Data(12, 2508));

        Scene scene  = new Scene(lineChart);
        lineChart.getData().add(series);
        lineChart.setPrefSize(500, 340);

        yAxis.setAutoRanging(false);
        yAxis.setLowerBound(1000);
        yAxis.setUpperBound(5000);
        yAxis.setTickUnit(500);
        yAxis.setMinorTickVisible(false);

        stage.setScene(scene);
        stage.setResizable(false);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}