LineChart from ObservableList> : LineChart « JavaFX « Java

1. Java
2. JavaFX
3. LineChart

LineChart from ObservableList>

 



import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.chart.XYChart.Series;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class Main extends Application {


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

    @Override
    public void start(Stage primaryStage) {
        CategoryAxis xAxis = new CategoryAxis();
        NumberAxis yAxis = new NumberAxis();
        LineChart lineChart = new LineChart(xAxis, yAxis);
        lineChart.setData(getChartData());
        lineChart.setTitle("Chart");
        primaryStage.setTitle("LineChart example");

        StackPane root = new StackPane();
        root.getChildren().add(lineChart);
        primaryStage.setScene(new Scene(root, 400, 250));
        primaryStage.show();
    }

    private ObservableList<XYChart.Series<String, Double>> getChartData() {
      double aValue = 1.56;
      double cValue = 1.06;
      ObservableList<XYChart.Series<String, Double>> answer = FXCollections.observableArrayList();
      Series<String, Double> aSeries = new Series<String, Double>();
      Series<String, Double> cSeries = new Series<String, Double>();
      aSeries.setName("a");
      cSeries.setName("C");
      
      for (int i = 2011; i < 2021; i++) {
          aSeries.getData().add(new XYChart.Data(Integer.toString(i), aValue));
          aValue = aValue + Math.random() - .5;
          cSeries.getData().add(new XYChart.Data(Integer.toString(i), cValue));
          cValue = cValue + Math.random() - .5;
      }
      answer.addAll(aSeries, cSeries);
      return answer;
    }
}

   
  

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