Question

没有错误，但是图表有问题我没有得到正确的折线图，我想要x轴的参数和y轴的值，但我有3个引擎作为系列，但系列是没有添加，但最后一个系列只是加起来。请帮助我解决这个问题。

我想要做的是：假设我有n个引擎和引擎的m个参数，如果我有4个引擎和30个参数，那么总值将是nxm，即4x30 = 120所以我想绘制引擎一个轴和另一个参数。目前我正在将引擎作为系列，但无法根据参数绘制它。应该有多个引擎系列和带有值的常量参数

Click this url to see the plot. Am getting something like this, as am not able to add multiple series.

1：performance.java

import java.util.ArrayList;
import java.util.List;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.XYChart;

public class performance {

protected LineChart<String,Number> lineChart;
protected ArrayList parameters;
protected ArrayList<List> param;
protected ArrayList engines;
public XYChart.Series series = new XYChart.Series();



public performance(LineChart<String,Number> lineChart, ArrayList parameters, ArrayList<List> paramValues, ArrayList engines) {
    this.lineChart = lineChart;
    this.parameters = parameters;
    this.param = paramValues;
    this.engines = engines;

}

public XYChart.Series generateChart() {

    for(int i=0;i<engines.size();i++)
    {

        series.setName(engines.get(i).toString());

        for(int j=0;j<parameters.size();j++)
        {

    series.getData().add(new XYChart.Data(parameters.get(j).toString(),param.get(i).get(j)));

    System.out.println(engines.get(i) + "with parameter: " + parameters.get(j) + "having value: "+ param.get(i).get(j));

        }
    }
    System.out.println(lineChart);



    return series;
}

}

2：mainClass

import java.util.ArrayList;
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.scene.Scene;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.stage.Stage;

public class NewFXMain extends Application {

@Override 
public void start(Stage stage) {

    stage.setTitle("Performance Analysis");

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

    xAxis.setLabel("Values");
    yAxis.setLabel("Engines");

    LineChart<String, Number> lineChart = new LineChart<String,Number>(xAxis,yAxis);

    Scene scene  = new Scene(lineChart,800,600); 

    lineChart.setTitle("Performance Analysis");

    ArrayList engines = new ArrayList();
     engines.add("engine1");
     engines.add("engine2");
     engines.add("engine3");
     ArrayList parameters = new ArrayList();
     parameters.add("parameter1");
     parameters.add("parameter2");
     parameters.add("parameter3");
     parameters.add("parameter4");
     parameters.add("parameter5");
     ArrayList paramvalue1 = new ArrayList();
     paramvalue1.add(12);
     paramvalue1.add(13);
     paramvalue1.add(15);
     paramvalue1.add(11);
     paramvalue1.add(10);


    ArrayList paramvalue2 = new ArrayList();
     paramvalue2.add(12);
     paramvalue2.add(20);
     paramvalue2.add(18);
     paramvalue2.add(17);
     paramvalue2.add(22);
     ArrayList paramValue3 = new ArrayList();
     paramValue3.add(14);
     paramValue3.add(12);
     paramValue3.add(11);
     paramValue3.add(22);
     paramValue3.add(12);
     ArrayList finalValue = new ArrayList();
     finalValue.add(paramvalue1);
     finalValue.add(paramvalue2);
     finalValue.add(paramValue3);

     for(int i=0;i<engines.size();i++)
       {
        performance performvalues = new performance(lineChart, parameters, finalValue, engines);

        lineChart.getData().add(performvalues.generateChart());
       }

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

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

Answer 1

更改generateChart班级的performance

public void generateChart() {
    for (int i = 0; i < engines.size(); i++) {
        XYChart.Series series = new XYChart.Series();
        series.setName(engines.get(i).toString());
        for (int j = 0; j < parameters.size(); j++) {
            series.getData().add(new XYChart.Data(parameters.get(j).toString(), param.get(i).get(j)));
        }
        lineChart.getData().add(series);
    }
    System.out.println(lineChart);
}

并使用start类的NewFXMain方法中的类，如下所示，删除for循环

performance performvalues = new performance(lineChart, parameters, finalValue, engines);
performvalues.generateChart();

注意：始终保留类名CamelCase

如何使用数组列表中的javafx折线图绘制多个系列

1 个答案: