Ytukyg

I would like to create a chart in JavaFX. I have such a file:

And I don't know how to put "date" for x or y axis. How should I do it.
I have something like this, but I'm not sure if it is properly.

draw.setOnAction(new EventHandler<ActionEvent>(){

    @Override

    public void handle(ActionEvent event) {

        newWindow.setTitle("Chart");

        //defining the axes

        if(choice1.getValue().toString()=="val" && choice2.getValue().toString()=="total"){}



        final NumberAxis xAxis = new NumberAxis();

        final NumberAxis yAxis = new NumberAxis();

        xAxis.setLabel("Number of Month");



        //creating the chart

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

        lineChart.setTitle("Chart");

        //defining a series

        XYChart.Series series = new XYChart.Series();

        series.setName("My portfolio");

        //populating the series with data

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

            series.getData().add(new XYChart.Data(d.get(choice1.getValue().toString()).get(i), d.get(choice2.getValue().toString()).get(i)));

        }



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

        lineChart.getData().add(series);

        newWindow.setScene(scene);

        newWindow.show();

     }

});



 LineChart linechart = new LineChart(xAxis, yAxis);

    ChoiceBox choice1 = new ChoiceBox(FXCollections.observableArrayList(

            "id", "date", "total", "val")

    );

    ChoiceBox choice2 = new ChoiceBox(FXCollections.observableArrayList(

            "id", "date", "total", "val")

    );

    Button draw = new Button("Draw!");

    HBox hb = new HBox(30);

    hb.getChildren().addAll(choice1, choice2);

I create an example that demo's your chart. Since you attached your data as an image, I had to create fake data. In this example, I created a DataFrame class to hold each line of data. I added this data to a List named fakeData. I then create and name each Series that will be added to the Chart. After that, I filter the fake data by ID. If the filtered ID equals the Series name, I added the data to the Series. This chart shows Date to Total. If you need Date to Val, replace seriesList.get(i).getData().add(new XYChart.Data(dataFrame.getDate(), dataFrame.getTotal())); with seriesList.get(i).getData().add(new XYChart.Data(dataFrame.getDate(), dataFrame.getVal()));.

Main

import java.time.LocalDate;

import java.time.Month;

import java.util.ArrayList;

import java.util.List;

import java.util.Random;

import java.util.stream.Collectors;

import javafx.application.Application;

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.stage.Stage;



public class LineChartSample extends Application

{



    String alphbets = "abcdefghij";



    @Override

    public void start(Stage stage)

    {

        List<DataFrame> fakeData = generateFakeDataFrames();

        stage.setTitle("Line Chart Sample");

        //defining the axes

        final CategoryAxis xAxis = new CategoryAxis();

        final NumberAxis yAxis = new NumberAxis();

        xAxis.setLabel("Date");

        //creating the chart

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

        lineChart.setTitle("Fake Chart");



        //defining a series

        List<XYChart.Series<String, Number>> seriesList = new ArrayList();

        for (int i = 0; i < alphbets.length(); i++) {

            XYChart.Series<String, Number> series = new XYChart.Series();

            series.setName(alphbets.charAt(i) + "");

            seriesList.add(series);

        }



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

            char tempChar = alphbets.charAt(i);

            //Filter the fake data

            List<DataFrame> subList = fakeData.stream().filter((t) -> {

                return t.getId() == tempChar;

            }).collect(Collectors.toList());



            //Add the filtered data to the correct series

            for (DataFrame dataFrame : subList) {

                System.out.println(seriesList.get(i).getName() + " :" + dataFrame.getId() + "  " + dataFrame.getDate() + "  " + dataFrame.getTotal());//Check to see if data is correct.

                seriesList.get(i).getData().add(new XYChart.Data(dataFrame.getDate(), dataFrame.getTotal()));

            }

        }

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

        lineChart.getData().addAll(seriesList);



        stage.setScene(scene);

        stage.show();

    }



    public static void main(String args)

    {

        launch(args);

    }



    public List<LocalDate> createDates()

    {

        List<LocalDate> localDates = new ArrayList();



        LocalDate localDate = LocalDate.of(1985, Month.FEBRUARY, 4);

        for (int i = 0; i <= 4; i++) {

            localDates.add(localDate.plusDays(i));

        }



        return localDates;

    }



    public List<DataFrame> generateFakeDataFrames()

    {

        Random random = new Random();



        List<DataFrame> dataFrames = new ArrayList();



        List<LocalDate> dates = createDates();

        for (int i = 0; i < 50; i++) {



            double total = (random.nextDouble() * 2 - 1) * 3;

            double val = (random.nextDouble() * 2 - 1) * 2000;



            dataFrames.add(new DataFrame(alphbets.charAt(i % 10), dates.get(i / 10).toString(), total, val));

        }



        return dataFrames;

    }

}

DataFrame Class

/**

 *

 * @author blj0011

 */

public class DataFrame

{



    private char id;

    private String date;

    private double total;

    private double val;



    public DataFrame(char id, String date, double total, double val)

    {

        this.id = id;

        this.date = date;

        this.total = total;

        this.val = val;

    }



    public double getVal()

    {

        return val;

    }



    public void setVal(double val)

    {

        this.val = val;

    }



    public char getId()

    {

        return id;

    }



    public void setId(char id)

    {

        this.id = id;

    }



    public String getDate()

    {

        return date;

    }



    public void setDate(String date)

    {

        this.date = date;

    }



    public double getTotal()

    {

        return total;

    }



    public void setTotal(double total)

    {

        this.total = total;

    }



    @Override

    public String toString()

    {

        return id + ", " + date + ", " + total + ", " + date + ", " + val;

    }

}