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📜  JavaFX 面积图表

📅  最后修改于: 2020-10-14 07:21:48             🧑  作者: Mango

JavaFX AreaChart

通常，面积图用于显示图形化的定量数据。它基本上在XY平面上绘制点集的面积。它与折线图的不同之处在于，折线图通过直线段将数据点连接在一起，而不是绘制它们所占据的面积。

在下图中，面积图显示一年中每个月两个不同的自行车消耗的汽油量。

在JavaFX中，类javafx.scene.chart.AreaChart表示面积图。我们需要实例化此类以生成面积图节点。

物产

该类包含单个属性，下表及其setter方法对此属性进行了描述。

Property Description Setter Method
createSymbols It is a boolean type property. Its true value indicates that the symbols get created for any of the data items for which the symbol node are not specified yet. setCreateSymbols(boolean value)

建设者

该类中有两个构造函数。

  • 公共区域图(轴X轴，轴Yaxis)：使用指定的Axis创建AreaChart的新实例。
  • 公共区域图(轴X轴，轴Yaxis，ObservableList >数据)： 使用指定的轴和数据创建AreaChart的新实例。

例

在下面的示例中，我们显示了公司在地区销售方面的比较。

package application;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.chart.AreaChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;
public class AreaChartTest extends Application {
@Override
public void start(Stage primaryStage) throws Exception {
// TODO Auto-generated method stub
//Configuring Xaxis and Yaxis
NumberAxis xaxis = new NumberAxis(1,12,1);
NumberAxis yaxis = new NumberAxis(10,510,50);
xaxis.setLabel("Month of the year");
yaxis.setLabel("Sales value (lacs)");

//Creating Areachart
AreaChart area = new AreaChart(xaxis,yaxis);

//Setting title for areachart 
area.setTitle("RegionWise Sales");

//Configuring series for North sales 
XYChart.Series seriesNorth = new XYChart.Series();
seriesNorth.setName("North");
seriesNorth.getData().add(new XYChart.Data(1,120));
seriesNorth.getData().add(new XYChart.Data(2,140));
seriesNorth.getData().add(new XYChart.Data(3,50));
seriesNorth.getData().add(new XYChart.Data(4,80));
seriesNorth.getData().add(new XYChart.Data(5,150));
seriesNorth.getData().add(new XYChart.Data(6,130));
seriesNorth.getData().add(new XYChart.Data(7,110));
seriesNorth.getData().add(new XYChart.Data(8,90));
seriesNorth.getData().add(new XYChart.Data(9,200));
seriesNorth.getData().add(new XYChart.Data(10,120));
seriesNorth.getData().add(new XYChart.Data(11,100));
seriesNorth.getData().add(new XYChart.Data(12,120));

//Configuring series for East sales 
XYChart.Series seriesEast = new XYChart.Series();
seriesEast.setName("East");
seriesEast.getData().add(new XYChart.Data(1,500));
seriesEast.getData().add(new XYChart.Data(2,200));
seriesEast.getData().add(new XYChart.Data(3,300));
seriesEast.getData().add(new XYChart.Data(4,290));
seriesEast.getData().add(new XYChart.Data(5,150));
seriesEast.getData().add(new XYChart.Data(6,120));
seriesEast.getData().add(new XYChart.Data(7,190));
seriesEast.getData().add(new XYChart.Data(8,80));
seriesEast.getData().add(new XYChart.Data(9,100));
seriesEast.getData().add(new XYChart.Data(10,220));
seriesEast.getData().add(new XYChart.Data(11,300));
seriesEast.getData().add(new XYChart.Data(12,220));

//Configuring series for west sales 
XYChart.Series seriesWest = new XYChart.Series();
seriesWest.setName("West");
seriesWest.getData().add(new XYChart.Data(1,320));
seriesWest.getData().add(new XYChart.Data(2,40));
seriesWest.getData().add(new XYChart.Data(3,250));
seriesWest.getData().add(new XYChart.Data(4,10));
seriesWest.getData().add(new XYChart.Data(5,190));
seriesWest.getData().add(new XYChart.Data(6,140));
seriesWest.getData().add(new XYChart.Data(7,200));
seriesWest.getData().add(new XYChart.Data(8,190));
seriesWest.getData().add(new XYChart.Data(9,300));
seriesWest.getData().add(new XYChart.Data(10,130));
seriesWest.getData().add(new XYChart.Data(11,400));
seriesWest.getData().add(new XYChart.Data(12,220));

//Configuring series for south sales
XYChart.Series seriesSouth = new XYChart.Series();
seriesSouth.setName("South");
seriesSouth.getData().add(new XYChart.Data(1,220));
seriesSouth.getData().add(new XYChart.Data(2,40));
seriesSouth.getData().add(new XYChart.Data(3,250));
seriesSouth.getData().add(new XYChart.Data(4,180));
seriesSouth.getData().add(new XYChart.Data(5,450));
seriesSouth.getData().add(new XYChart.Data(6,230));
seriesSouth.getData().add(new XYChart.Data(7,110));
seriesSouth.getData().add(new XYChart.Data(8,100));
seriesSouth.getData().add(new XYChart.Data(9,123));
seriesSouth.getData().add(new XYChart.Data(10,125));
seriesSouth.getData().add(new XYChart.Data(11,225));
seriesSouth.getData().add(new XYChart.Data(12,127));

//adding series to the Area chart 
area.getData().addAll(seriesNorth,seriesWest,seriesEast,seriesSouth);

//setting Group and Scene 
Group root = new Group(area);
Scene scene = new Scene(root,600,400);
primaryStage.setScene(scene);
primaryStage.setTitle("AreaChart Example");
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}