Example usage for org.jfree.chart ChartUtilities saveChartAsPNG

List of usage examples for org.jfree.chart ChartUtilities saveChartAsPNG

  1. HOME
  2. Java
  3. org.jfree
  4. org.jfree.chart.*
  5. ChartUtilities
  6. saveChartAsPNG

Introduction

In this page you can find the example usage for org.jfree.chart ChartUtilities saveChartAsPNG.

Prototype

public static void saveChartAsPNG(File file, JFreeChart chart, int width, int height) throws IOException

Source Link

Document

Saves a chart to the specified file in PNG format.

Usage

From source file:org.picketlink.idm.performance.TestBase.java

protected void generateGraph(String filename, String subDir) {

    (new File(graphBaseDir + "/" + subDir)).mkdirs();

    XYSeries series = new XYSeries("XYGraph");

    long sum = 0;

    for (Map.Entry<Integer, Number> entry : measure.entrySet()) {
        series.add(entry.getKey(), entry.getValue());
        sum += (Long) entry.getValue();
    }//w ww .  j a  va 2s  .  c  om

    XYSeriesCollection dataset = new XYSeriesCollection();
    dataset.addSeries(series);

    JFreeChart chart = ChartFactory.createXYLineChart(filename, // Title
            "# of users", // x-axis Label
            "time to create one" + " ... S:" + sum + ", " + "A: " + ((double) sum / measure.size()), // y-axis
            // Label
            dataset, // Dataset
            PlotOrientation.VERTICAL, // Plot Orientation
            false, // Show Legend
            false, // Use tooltips
            false // Configure chart to generate URLs?
    );
    try {
        ChartUtilities.saveChartAsPNG(new File(graphBaseDir + "/" + subDir + "/" + filename + ".png"), chart,
                1200, 800);
    } catch (IOException e) {
        System.err.println(e);
        System.err.println("Problem occurred creating chart.");
    }

}

From source file:org.cytoscape.dyn.internal.graphMetrics.SaveChartDialog.java

@Override
public void actionPerformed(ActionEvent e) {
    // TODO Auto-generated method stub
    if (e.getSource() == cancelButton) {
        this.setVisible(false);
        this.dispose();
    } else if (e.getSource() == saveChartButton) {
        JFileChooser saveFileDialog = new JFileChooser();
        saveFileDialog/*w  ww .  j av a 2 s  . c  o m*/
                .addChoosableFileFilter(new ExtensionFileFilter(".jpeg", ".jpg", "Jpeg images (.jpeg, .jpg)"));
        saveFileDialog.addChoosableFileFilter(
                new ExtensionFileFilter(".png", "Portable Network Graphic images (.png)"));
        saveFileDialog
                .addChoosableFileFilter(new ExtensionFileFilter(".svg", "Scalable Vector Graphics (.svg)"));
        int save = saveFileDialog.showSaveDialog(this);
        if (save == JFileChooser.APPROVE_OPTION) {
            File file = saveFileDialog.getSelectedFile();
            int width = ((SpinnerNumberModel) widthSpinner.getModel()).getNumber().intValue();
            int height = ((SpinnerNumberModel) heightSpinner.getModel()).getNumber().intValue();

            ExtensionFileFilter filter = null;
            try {
                filter = (ExtensionFileFilter) saveFileDialog.getFileFilter();
                if (!filter.hasExtension(file)) {
                    file = filter.appendExtension(file);
                }
            } catch (ClassCastException ex) {
                // Try to infer the type of file by its extension
                FileFilter[] filters = saveFileDialog.getChoosableFileFilters();
                for (int i = 0; i < filters.length; ++i) {
                    if (filters[i] instanceof ExtensionFileFilter) {
                        filter = (ExtensionFileFilter) filters[i];
                        if (filter.hasExtension(file)) {
                            break;
                        }
                        filter = null;
                    }
                }

                if (filter == null) {
                    // Could not infer the type
                    JOptionPane.showMessageDialog(null,
                            "File type not specified!\nWhen giving file name, please also select one of the supported file types.",
                            "Error", JOptionPane.ERROR_MESSAGE);
                    return;
                }
            }
            // Save the chart to the specified file name
            try {
                String ext = filter.getExtension();
                if (ext.equals("jpeg")) {
                    ChartUtilities.saveChartAsJPEG(file, chart, width, height);
                } else if (ext.equals("png")) {
                    ChartUtilities.saveChartAsPNG(file, chart, width, height);
                } else {
                    VectorGraphics graphics = new SVGGraphics2D(file, new Dimension(width, height));
                    graphics.startExport();
                    chart.draw(graphics, new Rectangle2D.Double(0, 0, width, height));
                    graphics.endExport();
                }
            } catch (IOException ex) {
                JOptionPane.showMessageDialog(null, "An error occurred while creating or writing to the file.",
                        "Error", JOptionPane.ERROR_MESSAGE);
                return;
            }
            this.setVisible(false);
            this.dispose();
        } else if (save == JFileChooser.ERROR_OPTION) {
            JOptionPane.showMessageDialog(null, "An error occurred while initializing the window.", "Error",
                    JOptionPane.ERROR_MESSAGE);
        }
    }
}

From source file:com.comcast.cmb.test.tools.QueueDepthSimulator.java

public static void scatterPlot(Map<String, List<Double>> datasets, String filename, String title, String labelX,
        String labelY) throws IOException {
    XYSeriesCollection dataset = new XYSeriesCollection();
    for (String label : datasets.keySet()) {
        XYSeries data = new XYSeries(label);
        int cnt = 0;
        for (Double d : datasets.get(label)) {
            data.add(cnt, d);/*from  w w w .j  a v  a2s .  co  m*/
            cnt++;
        }
        dataset.addSeries(data);
    }
    JFreeChart chart = ChartFactory.createScatterPlot(title, labelX, labelY, dataset, PlotOrientation.VERTICAL,
            true, true, false);
    ChartUtilities.saveChartAsPNG(new File(filename), chart, 1024, 768);
}

From source file:org.objectweb.proactive.extensions.timitspmd.util.charts.HierarchicalBarChart.java

private void buildFinalChart(String title, String subTitle, String xAxisLabel, String yAxisLabel, int height,
        int width, String filename, Chart.Scale scaleMode, Chart.LegendFormat legendFormatMode, int alpha) {
    @SuppressWarnings("unchecked")
    Vector<Counter>[] vec = new Vector[this.timers.length];
    boolean exist;

    // create the dataset...
    for (int i = 0; i < this.timers.length; i++) {
        vec[i] = new Vector<Counter>();
        @SuppressWarnings("unchecked")
        Iterator<Element> it = this.timers[i].getDescendants();
        while (it.hasNext()) {
            try {
                Element elt = (Element) it.next();
                String name = elt.getAttributeValue("name");
                double value = Double.valueOf(elt.getAttributeValue("avg"));
                exist = false;//w  w w  . jav a 2s. c o m
                for (int j = 0; j < vec[i].size(); j++) {
                    if (((Counter) vec[i].get(j)).getName().equals(name)) {
                        ((Counter) vec[i].get(j)).addValue(value);
                        exist = true;
                        break;
                    }
                }
                if (!exist) {
                    vec[i].add(new Counter(name, value));
                }
            } catch (ClassCastException e) {
                continue;
            }
        }
    }

    CategoryDataset dataset = null;
    try {
        dataset = DatasetUtilities.createCategoryDataset(toSeries(vec[0]), this.categories, toDataset(vec));
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
        throw new IllegalArgumentException(
                "Benchmark names must have different names. Be sure that your filter contains correct timers names");
    }

    // create the chart...
    final CategoryAxis categoryAxis = new CategoryAxis(xAxisLabel);
    final ValueAxis valueAxis = new NumberAxis(yAxisLabel);

    final CategoryPlot plot = new CategoryPlot(dataset, categoryAxis, valueAxis, new HierarchicalBarRenderer());

    plot.setOrientation(PlotOrientation.VERTICAL);
    final JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, true);
    chart.addSubtitle(new TextTitle(subTitle));

    // set the background color for the chart...
    chart.setBackgroundPaint(Color.white);

    final HierarchicalBarRenderer renderer = (HierarchicalBarRenderer) plot.getRenderer();

    renderer.setItemMargin(0.01);
    renderer.setDatasetTree(this.timers);
    renderer.setSeries(toSeries(vec[0]));
    renderer.setAlpha(alpha);

    final CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryMargin(HierarchicalBarChart.CATEGORY_MARGIN);
    domainAxis.setUpperMargin(0.05);
    domainAxis.setLowerMargin(0.05);

    try {
        if ((filename == null) || "".equals(filename)) {
            throw new RuntimeException(
                    "The output filename for the HierarchicalBarChart cannot be null or empty !");
        }

        ChartUtilities.saveChartAsPNG(XMLHelper.createFileWithDirs(filename + ".png"), chart, width, height);

        Utilities.saveChartAsSVG(chart, new Rectangle(width, height),
                XMLHelper.createFileWithDirs(filename + ".svg"));
    } catch (java.io.IOException e) {
        System.err.println("Error writing chart image to file");
        e.printStackTrace();
    }
}

From source file:tmn.dev.project.Player.java

/**
 * Generate a plot of batting average over the span of a season and write
 * the plot to a PNG file.//from ww  w.  ja v a 2 s . c  o m
 * 
 * @return The String representation of the name of the PNG file containing
 *         the plot.
 * @throws IOException
 */
private String createBAPlot() throws IOException {

    // Create a scatter plot for batting average over the season
    // Game number on the x axis, Batting average on the y axis
    JFreeChart chart = ChartFactory.createScatterPlot("Batting Average Throughout the Season", "Game Number",
            "Batting Average", new XYSeriesCollection(baGame), PlotOrientation.VERTICAL, false, false, false);
    XYPlot plot = chart.getXYPlot();
    // Set the axis ranges to provide an appropriate zoom
    NumberAxis xAxis = (NumberAxis) plot.getDomainAxis();
    xAxis.setRange(baGame.getMinX(), baGame.getMaxX());
    NumberAxis yAxis = (NumberAxis) plot.getRangeAxis();
    yAxis.setRange(baGame.getMinY() - .02, baGame.getMaxY() + .02);
    // Set the tick labels on the y axis to the typical BA format
    yAxis.setNumberFormatOverride(new DecimalFormat(".000"));

    // Create the String representation of the /images directory
    String imgDirStr = System.getProperty("user.dir") + System.getProperty("file.separator") + "images";

    // If the directory doesn't already exist, create it
    File imgDir = new File(imgDirStr);
    if (!imgDir.exists() && !imgDir.isDirectory())
        imgDir.mkdir();

    // Create the batting average PNG files
    String fileName = imgDirStr + System.getProperty("file.separator") + this.getId() + ".png";
    File imgFile = new File(fileName);

    // If the file already exists, append a number in parentheses
    int index = 0;
    while (!imgFile.createNewFile()) {
        // Append (<index>).html after the Player ID
        fileName = imgDirStr + System.getProperty("file.separator") + this.getId() + "(" + ++index + ")"
                + ".png";
        // Try to create a file with this name
        imgFile = new File(fileName);
    }

    // Write the plot to the PNG file that was created
    ChartUtilities.saveChartAsPNG(imgFile, chart, 800, 450);

    return imgFile.getName();
}

From source file:org.spantus.exp.segment.draw.AbstractGraphGenerator.java

protected void draw(JFreeChart chart, String name, Double widthCoef, Double heightCoef) {
    Double width = 800 * widthCoef;
    Double height = 270 * heightCoef;

    try {/* w  ww  . j a  va  2 s. c om*/
        new File(getGeneratePath()).mkdirs();
        String _name = name.replaceAll(":", "_");
        _name = _name.replaceAll("^\\s+", "").replaceAll("\\s+$", "").replaceAll("\\s+", "-");
        ChartUtilities.saveChartAsPNG(new File(getGeneratePath() + _name + ".png"), chart, width.intValue(),
                height.intValue());
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:playground.johannes.snowball.Histogram.java

public void plot(String filename, String title) throws IOException {
    fillBins();/* w  ww.j  av  a  2s.co m*/
    final XYSeriesCollection data = new XYSeriesCollection();
    final XYSeries wave = new XYSeries(title, false, true);

    double min, max, width;
    //      int size;

    if (bounds != null) {
        min = bounds[0];
        max = bounds[1];
    } else {
        double minmax[] = getMinMax();
        min = minmax[0];
        max = minmax[1];
    }
    if (binWidth > 0) {
        //         size = (int)Math.ceil((max - min)/(double)binWidth);
        width = binWidth;
    } else {
        //         size = bincount;
        width = (max - min) / (double) bincount;
    }

    int cnt = bins.size();
    for (int i = 0; i < cnt; i++) {
        wave.add(i * width + min, bins.get(i));
    }

    data.addSeries(wave);

    final JFreeChart chart = ChartFactory.createXYStepChart("title", "x", "y", data, PlotOrientation.VERTICAL,
            true, // legend
            false, // tooltips
            false // urls
    );

    XYPlot plot = chart.getXYPlot();

    final CategoryAxis axis1 = new CategoryAxis("x");
    axis1.setTickLabelFont(new Font("SansSerif", Font.PLAIN, 7));
    plot.setDomainAxis(new NumberAxis("y"));
    ChartUtilities.saveChartAsPNG(new File(filename), chart, 1024, 768);
}

From source file:org.miloss.fgsms.services.rs.impl.reports.os.FreeDiskSpace.java

@Override
public void generateReport(OutputStreamWriter data, List<String> urls, String path, List<String> files,
        TimeRange range, String currentuser, SecurityWrapper classification, WebServiceContext ctx)
        throws IOException {

    Connection con = Utility.getPerformanceDBConnection();
    try {//from w  w w .j  a va2 s.co m
        PreparedStatement cmd = null;
        ResultSet rs = null;
        JFreeChart chart = null;
        data.append("<hr /><h2>").append(GetDisplayName()).append("</h2>");
        data.append(GetHtmlFormattedHelp() + "<br />");

        data.append(
                "<table class=\"table table-hover\"><tr><th>URI</th><th>Average Send Rate</th><th>Average Free Disk Space (all paritions)</th><th>Average Write KB/s</th><th>Average Read KB/s</th></tr>");

        TimeSeriesCollection col = new TimeSeriesCollection();
        for (int i = 0; i < urls.size(); i++) {
            if (!isPolicyTypeOf(urls.get(i), PolicyType.MACHINE)) {
                continue;
            }
            //https://github.com/mil-oss/fgsms/issues/112
            if (!UserIdentityUtil.hasReadAccess(currentuser, "getReport", urls.get(i), classification, ctx)) {
                continue;
            }
            String url = Utility.encodeHTML(BaseReportGenerator.getPolicyDisplayName(urls.get(i)));
            double average = 0;
            data.append("<tr><td>").append(url).append("</td>");
            try {

                cmd = con.prepareStatement(
                        "select avg(freespace) from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();
                if (rs.next()) {
                    average = rs.getDouble(1);

                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }

            data.append("<td>").append(average + "").append("</td>");
            try {
                cmd = con.prepareStatement(
                        "select avg(writekbs) from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();
                average = 0;
                if (rs.next()) {
                    average = rs.getDouble(1);

                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }

            data.append("<td>").append(average + "").append("</td>");
            try {
                cmd = con.prepareStatement(
                        "select avg(readkbs) from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();
                average = 0;
                if (rs.next()) {
                    average = rs.getDouble(1);

                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }
            data.append("<td>").append(average + "").append("</td></tr>");

            //ok now get the raw data....
            TimeSeriesContainer tsc = new TimeSeriesContainer();
            try {
                cmd = con.prepareStatement(
                        "select readkbs, writekbs,freespace, utcdatetime, driveidentifier from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();

                while (rs.next()) {
                    TimeSeries ts2 = tsc.Get(url + " " + rs.getString("driveidentifier"), Millisecond.class);
                    GregorianCalendar gcal = new GregorianCalendar();
                    gcal.setTimeInMillis(rs.getLong(4));
                    Millisecond m = new Millisecond(gcal.getTime());
                    ts2.addOrUpdate(m, rs.getLong("freespace"));
                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }
            for (int ik = 0; ik < tsc.data.size(); ik++) {
                col.addSeries(tsc.data.get(ik));
            }

        }

        data.append("</table>");
        chart = org.jfree.chart.ChartFactory.createTimeSeriesChart(GetDisplayName(), "Timestamp", "MBytes", col,
                true, false, false);

        try {
            // if (set.getRowCount() != 0) {
            ChartUtilities.saveChartAsPNG(new File(
                    path + getFilePathDelimitor() + "image_" + this.getClass().getSimpleName() + ".png"), chart,
                    1500, 400);
            data.append("<img src=\"image_").append(this.getClass().getSimpleName()).append(".png\">");
            files.add(path + getFilePathDelimitor() + "image_" + this.getClass().getSimpleName() + ".png");
            // }
        } catch (IOException ex) {
            log.log(Level.ERROR, "Error saving chart image for request", ex);
        }

    } catch (Exception ex) {
        log.log(Level.ERROR, null, ex);
    } finally {
        DBUtils.safeClose(con);
    }
}

From source file:name.martingeisse.reporting.renderer.HtmlRenderer.java

/**
 * @param chartBlock/* w w w  .  j  av  a 2  s.c  o m*/
 */
private void render(ChartBlock chartBlock) {
    File imageFile = allocateResource("chart-$.png");
    out.print("<div><img src=\"" + imageFile.getName() + "\" /></div>");
    try {
        ChartUtilities.saveChartAsPNG(imageFile, chartBlock.getChart(), 1000, 600);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:org.miloss.fgsms.services.rs.impl.reports.os.DiskIOReport.java

@Override
public void generateReport(OutputStreamWriter data, List<String> urls, String path, List<String> files,
        TimeRange range, String currentuser, SecurityWrapper classification, WebServiceContext ctx)
        throws IOException {

    Connection con = Utility.getPerformanceDBConnection();
    try {//from ww  w .j  a v a 2  s .  co  m
        PreparedStatement cmd = null;
        ResultSet rs = null;
        JFreeChart chart = null;

        data.append("<hr /><h2>").append(GetDisplayName()).append("</h2>");
        data.append(GetHtmlFormattedHelp() + "<br />");
        data.append(
                "<table class=\"table table-hover\"><tr><th>URI</th><th>Average Free Disk Space (all paritions)</th><th>Average Write KB/s</th><th>Average Read KB/s</th></tr>");

        TimeSeriesCollection col = new TimeSeriesCollection();
        for (int i = 0; i < urls.size(); i++) {
            if (!isPolicyTypeOf(urls.get(i), PolicyType.MACHINE)) {
                continue;
            }
            //https://github.com/mil-oss/fgsms/issues/112
            if (!UserIdentityUtil.hasReadAccess(currentuser, "getReport", urls.get(i), classification, ctx)) {
                continue;
            }
            String url = Utility.encodeHTML(BaseReportGenerator.getPolicyDisplayName(urls.get(i)));
            double average = 0;
            data.append("<tr><td>").append(url).append("</td>");
            try {

                cmd = con.prepareStatement(
                        "select avg(freespace) from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();

                if (rs.next()) {
                    average = rs.getDouble(1);

                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }

            data.append("<td>").append(average + "").append("</td>");
            average = 0;

            try {
                cmd = con.prepareStatement(
                        "select avg(writekbs) from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();

                if (rs.next()) {
                    average = rs.getDouble(1);

                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }

            data.append("<td>").append(average + "").append("</td>");
            average = 0;
            try {
                cmd = con.prepareStatement(
                        "select avg(readkbs) from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();

                if (rs.next()) {
                    average = rs.getDouble(1);
                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }
            data.append("<td>").append(average + "").append("</td></tr>");

            //ok now get the raw data....
            TimeSeriesContainer tsc = new TimeSeriesContainer();
            try {
                cmd = con.prepareStatement(
                        "select readkbs, writekbs,freespace, utcdatetime, driveidentifier from rawdatadrives where uri=? and utcdatetime > ? and utcdatetime < ?;");
                cmd.setString(1, urls.get(i));
                cmd.setLong(2, range.getStart().getTimeInMillis());
                cmd.setLong(3, range.getEnd().getTimeInMillis());
                rs = cmd.executeQuery();

                while (rs.next()) {

                    TimeSeries ts = tsc.Get(url + " " + rs.getString("driveidentifier") + " Read",
                            Millisecond.class);
                    TimeSeries ts2 = tsc.Get(url + " " + rs.getString("driveidentifier") + " Write",
                            Millisecond.class);
                    //TimeSeries ts2 = tsc.Get(urls.get(i) + " " + rs.getString("driveidentifier") , Millisecond.class);
                    GregorianCalendar gcal = new GregorianCalendar();
                    gcal.setTimeInMillis(rs.getLong(4));
                    Millisecond m = new Millisecond(gcal.getTime());

                    ts.addOrUpdate(m, rs.getLong("readKBs"));

                    ts2.addOrUpdate(m, rs.getLong("writeKBs"));

                }
            } catch (Exception ex) {
                log.log(Level.WARN, null, ex);
            } finally {
                DBUtils.safeClose(rs);
                DBUtils.safeClose(cmd);
            }
            for (int ik = 0; ik < tsc.data.size(); ik++) {
                col.addSeries(tsc.data.get(ik));
            }

        }
        chart = org.jfree.chart.ChartFactory.createTimeSeriesChart(GetDisplayName(), "Timestamp", "Rate", col,
                true, false, false);

        data.append("</table>");
        try {
            // if (set.getRowCount() != 0) {
            ChartUtilities.saveChartAsPNG(new File(
                    path + getFilePathDelimitor() + "image_" + this.getClass().getSimpleName() + ".png"), chart,
                    1500, 400);
            data.append("<img src=\"image_").append(this.getClass().getSimpleName()).append(".png\">");
            files.add(path + getFilePathDelimitor() + "image_" + this.getClass().getSimpleName() + ".png");
            // }
        } catch (IOException ex) {
            log.log(Level.ERROR, "Error saving chart image for request", ex);
        }
    } catch (Exception ex) {
        log.log(Level.ERROR, null, ex);
    } finally {
        DBUtils.safeClose(con);
    }

}