at.ac.tuwien.dsg.utility.DesignChart.java Source code

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Here is the source code for at.ac.tuwien.dsg.utility.DesignChart.java

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package at.ac.tuwien.dsg.utility;

import java.awt.image.BufferedImage;
import java.io.File;
import java.util.LinkedList;
import javax.imageio.ImageIO;
import org.jfree.chart.*;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

/**
 *
 * @author Anindita
 */
public class DesignChart {

    public void chart(LinkedList<String> xValue, LinkedList<String> yValue) throws Exception {

        XYSeries series = new XYSeries("Sensory Data");
        final JFreeChart chart;

        //data assignment in the chart
        {
            for (int i = 0; i < xValue.size(); i++) {
                series.add(Double.parseDouble(xValue.get(i)), Double.parseDouble(yValue.get(i)));
            }

            final XYSeriesCollection data = new XYSeriesCollection(series);
            chart = ChartFactory.createXYLineChart("Graph Visualization", "collection_time", "collection_data",
                    data, PlotOrientation.VERTICAL, true, true, false);
        }

        //design the plot of the chart
        {
            XYPlot xyPlot = chart.getXYPlot();
            NumberAxis xAxis = (NumberAxis) xyPlot.getDomainAxis();
            NumberAxis yAxis = (NumberAxis) xyPlot.getRangeAxis();

            xAxis.setRange(20, 120);
            xAxis.setTickUnit(new NumberTickUnit(15));
            yAxis.setRange(947, 950);
            yAxis.setTickUnit(new NumberTickUnit(0.5));
        }

        //generation of the image  
        {
            try {

                BufferedImage img = chart.createBufferedImage(300, 200);
                //File outputfile = new File("./example/Sample.png");
                File outputfile = new File(
                        "/Users/dsg/Documents/phd/Big Demo/CloudLyra/Utils/JBPMEngine/example/Sample.png");
                ImageIO.write(img, "png", outputfile);

            } catch (Exception e) {
                System.out.println("exception occured in tomcat: " + e);
            }
        }

    }

}