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Thread: how to plot the line graph using jfreechart reading from text file

  1. #1
    Junior Member
    Join Date
    Mar 2012
    Thanked 0 Times in 0 Posts

    Default how to plot the line graph using jfreechart reading from text file

    In the below code we are able to read y-axis but not able to read x-axis on the graph.. can tel me how to read x-axis on the graph.
    thanks in advance

    import java.io.*;
    import java.util.*;//Scanner is included
    import org.jfree.chart.*;
    import org.jfree.chart.plot.PlotOrientation;
    import org.jfree.data.category.DefaultCategoryDataset;
    import org.jfree.data.general.DefaultPieDataset;
    import org.jfree.data.xy.*;
    import org.jfree.data.*;
    public class Plot_1
    static Scanner scanner;
    static XYSeries series;
    //static File file;
    public static void main(String[] args)

    }//end of main


    //Method that reads in an external file with numbers (doubles)

    //and plots the content in a line chart using JFreeChart

    public static void plotResult() {

    //Read in the file "calculation.txt" using Scanner and call hasNextDouble on it

    try {

    int index = 0;

    File file = new File("data.txt");

    series = new XYSeries("Pk");

    scanner = new Scanner(file);

    // Scanner scanner = new Scanner(file);

    while (scanner.hasNextDouble()) {





    catch (FileNotFoundException e) {


    //Round off the doubles to two decimals - not done yet

    //Plot the line chart


    XYSeries series = new XYSeries("Pk");

    series.add(1, 0.8201791789916324 );

    series.add(2, 0.9727097916233601 );

    series.add(3, 0.9949972829175494);


    XYDataset xyDataset = new XYSeriesCollection(series);

    JFreeChart chart = ChartFactory.createXYLineChart

    ("Temp = 85", "k", "Pk",xyDataset, PlotOrientation.VERTICAL, true, true, false);

    ChartFrame frame1=new ChartFrame("XYLine Chart",chart);



    }//End of method


    }//end of class

    in data.txt has following values
    1 20
    2 40
    4 50

  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,421 Times in 2,374 Posts

    Default Re: how to plot the line graph using jfreechart reading from text file

    Cross posted at how to plot a line graph using jfreechart reading from text file?
    If you don't understand my answer, don't ignore it, ask a question.

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