数据结构
网络
RDBMS
操作系统
Java
MS Excel
iOS
HTML
CSS
Android
Python
C 编程
C++
C#
MongoDB
MySQL
Javascript
PHP
物理学
化学
生物学
数学
英语
经济学
心理学
社会学
时尚研究
法律研究使用 JavaFX 创建包含多个系列的面积图示例
面积图接受一系列数据点 (x, y) 作为输入值，使用一条线连接它们，并绘制获得的线和轴之间的区域。在 JavaFX 中，你可以通过实例化 javafx.scene.chart.AreaChart 类来创建面积图。
在实例化此类时，你必须传递表示 x 轴和 y 轴的 Axis 类的两个对象（作为构造函数的参数）。由于 Axis 类是抽象的，因此你需要传递其具体子类 NumberAxis（对于数值）或 CategoryAxis（对于字符串值）的对象。
包含多个系列的面积图
- XYChart.Data 类表示图表中的数据点，你可以通过实例化此类来创建数据点。
XYChart.Data dataPoint1 = new XYChart.Data(x-value, y-value)
XYChart.Data dataPoint2 = new XYChart.Data(x-value, y-value)
XYChart.Data dataPoint3 = new XYChart.Data(x-value, y-value)
- 一旦你创建了所有必需的数据点，你就可以创建一个你需要实例化的系列 XYChart.Series 类并将数据点添加到其中。
XYChart.Series series = XYChart.Series
series.getData().add(dataPoint1);
series.getData().add(dataPoint2);
series.getData().add(dataPoint3);
- 你可以根据需要创建任意数量的此类系列。
示例
以下 JavaFX 示例演示了如何创建多个面积图。import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.chart.AreaChart;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.layout.StackPane;
public class AreaCharts_Multiple extends Application {
public void start(Stage stage) {
//Defining the x an y axes
CategoryAxis xAxis = new CategoryAxis();
NumberAxis yAxis = new NumberAxis();
//Setting labels for the axes
xAxis.setLabel("Month");
yAxis.setLabel("Temperature(B0C)");
//Creating an area chart
AreaChart<String, Number> areaChart = new AreaChart<String, Number>(xAxis, yAxis);
//Preparing the data points for the series1
XYChart.Series series1 = new XYChart.Series();
series1.getData().add(new XYChart.Data("Jan", 7.0));
series1.getData().add(new XYChart.Data("Feb", 6.9));
series1.getData().add(new XYChart.Data("March", 9.5));
series1.getData().add(new XYChart.Data("April", 14.5));
series1.getData().add(new XYChart.Data("May", 18.2));
series1.getData().add(new XYChart.Data("June", 21.5));
series1.getData().add(new XYChart.Data("July", 25.2));
series1.getData().add(new XYChart.Data("August", 26.5));
series1.getData().add(new XYChart.Data("Sep", 23.3));
series1.getData().add(new XYChart.Data("Oct", 18.3));
series1.getData().add(new XYChart.Data("Nov", 13.9));
series1.getData().add(new XYChart.Data("Dec", 9.6));
//Preparing the data points for the series2
XYChart.Series series2 = new XYChart.Series();
series2.getData().add(new XYChart.Data("Jan", -0.2));
series2.getData().add(new XYChart.Data("Feb", 0.8));
series2.getData().add(new XYChart.Data("March", 5.7));
series2.getData().add(new XYChart.Data("April", 11.3));
series2.getData().add(new XYChart.Data("May", 17.0));
series2.getData().add(new XYChart.Data("June", 22.0));
series2.getData().add(new XYChart.Data("July", 24.8));
series2.getData().add(new XYChart.Data("August", 24.1));
series2.getData().add(new XYChart.Data("Sep", 20.1));
series2.getData().add(new XYChart.Data("Oct", 14.1));
series2.getData().add(new XYChart.Data("Nov", 8.6));
series2.getData().add(new XYChart.Data("Dec", 2.5));
//Preparing the data points for the series3
XYChart.Series series3 = new XYChart.Series();
series3.getData().add(new XYChart.Data("Jan", 3.9));
series3.getData().add(new XYChart.Data("Feb", 4.2));
series3.getData().add(new XYChart.Data("March", 5.7));
series3.getData().add(new XYChart.Data("April", 8.5));
series3.getData().add(new XYChart.Data("May", 11.9));
series3.getData().add(new XYChart.Data("June", 15.2));
series3.getData().add(new XYChart.Data("July", 17.0));
series3.getData().add(new XYChart.Data("August", 16.6));
series3.getData().add(new XYChart.Data("Sep", 14.2));
series3.getData().add(new XYChart.Data("Oct", 10.3));
series3.getData().add(new XYChart.Data("Nov", 6.6));
series3.getData().add(new XYChart.Data("Dec", 4.8));
//Setting the name to all the series
series1.setName("Tokyo");
series2.setName("New York");
series3.setName("London");
//Setting the data to area chart
areaChart.getData().addAll(series1, series2, series3);
//Creating a stack pane to hold the chart
StackPane pane = new StackPane(areaChart);
pane.setPadding(new Insets(15, 15, 15, 15));
pane.setStyle("-fx-background-color: BEIGE");
//Setting the Scene
Scene scene = new Scene(pane, 595, 350);
stage.setTitle("Area Chart");
stage.setScene(scene);
stage.show();
}
public static void main(String args[]) {
launch(args);
}
}
输出
更新时间：20-Nov-2024
343 人查看
广告