Example usage for org.jfree.chart JFreeChart getCategoryPlot

List of usage examples for org.jfree.chart JFreeChart getCategoryPlot

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Introduction

In this page you can find the example usage for org.jfree.chart JFreeChart getCategoryPlot.

Prototype

public CategoryPlot getCategoryPlot()

Source Link

Document

Returns the plot cast as a CategoryPlot .

Usage

From source file:com.opensourcestrategies.crmsfa.reports.JFreeCrmsfaCharts.java

/**
 * Lead pipeline.  Description at http://www.opentaps.org/docs/index.php/CRMSFA_Dashboard
 * Note that this counts all the leads in the system for now.
 */// ww  w .j av a 2s .  c  o  m
public static String createLeadPipelineChart(Delegator delegator, Locale locale)
        throws GenericEntityException, IOException {
    Map uiLabelMap = UtilMessage.getUiLabels(locale);

    DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    // get all LEAD statuses that are not CONVERTED, or DEAD
    List<GenericValue> leadStatuses = ReportHelper.findLeadStatusesForDashboardReporting(delegator);

    // report number of leads for each status
    for (GenericValue status : leadStatuses) {
        String statusId = status.getString("statusId");
        long count = delegator.findCountByCondition("PartyAndStatus",
                EntityCondition.makeCondition("statusId", EntityOperator.EQUALS, statusId), null);
        dataset.addValue(count, "", (String) status.get("description", locale));
    }

    // set up the chart
    JFreeChart chart = ChartFactory.createBarChart((String) uiLabelMap.get("CrmLeadPipeline"), null, null,
            dataset, PlotOrientation.HORIZONTAL, false, true, false);
    chart.setBackgroundPaint(Color.white);
    chart.setBorderVisible(true);
    chart.setPadding(new RectangleInsets(5.0, 5.0, 5.0, 5.0));

    // get a reference to the plot for further customisation...
    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);

    // get the bar renderer to put effects on the bars
    final BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false); // disable bar outlines

    // set up gradient paint on bar
    final GradientPaint gp = new GradientPaint(0.0f, 0.0f, new Color(227, 246, 206), 0.0f, 0.0f,
            new Color(153, 204, 102));
    renderer.setSeriesPaint(0, gp);

    // change the auto tick unit selection to integer units only...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // save as a png and return the file name
    return ServletUtilities.saveChartAsPNG(chart, 360, 200, null);
}

From source file:com.athena.chameleon.engine.utils.PDFWriterUtil.java

/**
 * /*from  w ww .  j a v  a 2  s .  co  m*/
 * chart 
 *
 * @param section chart   section ?
 * @param e chart   element
 * @throws Exception
 */
public static void setChart(PdfWriter writer, Section section, Element e) throws Exception {

    DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    for (Element e1 : e.getChildren()) {
        if (!e1.getChild("column").getText().equals(FileType.DIRECTORY.toString())
                && !e1.getChild("column").getText().equals(FileType.SUM.toString())) {
            dataset.setValue(Integer.parseInt(e1.getChild("value").getText()), e.getAttributeValue("title"),
                    e1.getChild("column").getText());
        }
    }

    JFreeChart chart = ChartFactory.createBarChart3D(e.getAttributeValue("title"), "", "", dataset,
            PlotOrientation.VERTICAL, false, true, false);

    CategoryPlot plot = chart.getCategoryPlot();
    java.awt.Font labelFont = chart.getCategoryPlot().getDomainAxis().getLabelFont();
    plot.getDomainAxis().setLabelFont(new java.awt.Font(labelFont.getName(), Font.NORMAL, 6));
    plot.getDomainAxis().setTickLabelFont(new java.awt.Font(labelFont.getName(), Font.NORMAL, 6));

    PdfContentByte cb = writer.getDirectContent();
    PdfTemplate bar = cb.createTemplate(500, 150);
    Graphics2D g2d2 = new PdfGraphics2D(bar, 500, 150);
    Rectangle2D r2d2 = new Rectangle2D.Double(0, 0, 500, 150);
    chart.draw(g2d2, r2d2);
    g2d2.dispose();

    Image image = Image.getInstance(bar);
    image.setAlignment(com.itextpdf.text.Element.ALIGN_CENTER);
    section.add(image);
}

From source file:org.talend.dataprofiler.chart.ChartDecorator.java

/**
 * DOC bZhou Comment method "decorateCategoryPlot".
 * /*from   w  w w . j a v  a 2  s  .  c om*/
 * @param chart
 */
public static void decorateCategoryPlot(JFreeChart chart, PlotOrientation orientation) {

    CategoryPlot plot = chart.getCategoryPlot();
    CategoryItemRenderer render = plot.getRenderer();
    CategoryAxis domainAxis = plot.getDomainAxis();
    // ADD msjian TDQ-5111 2012-4-9: set something look it well
    domainAxis.setCategoryMargin(0.1);
    domainAxis.setUpperMargin(0.05);
    domainAxis.setLowerMargin(0.05);
    domainAxis.setCategoryLabelPositionOffset(10);
    // TDQ-5111~

    ValueAxis valueAxis = plot.getRangeAxis();

    Font font = new Font("Tahoma", Font.BOLD, BASE_ITEM_LABEL_SIZE);//$NON-NLS-1$

    render.setBaseItemLabelFont(font);
    // MOD zshen 10998: change the font name 2010-01-16
    font = new Font("sans-serif", Font.BOLD, BASE_LABEL_SIZE);//$NON-NLS-1$
    domainAxis.setLabelFont(font);

    font = new Font("sans-serif", Font.BOLD, BASE_LABEL_SIZE);//$NON-NLS-1$
    valueAxis.setLabelFont(font);

    font = new Font("sans-serif", Font.PLAIN, BASE_TICK_LABEL_SIZE);//$NON-NLS-1$
    domainAxis.setTickLabelFont(font);
    valueAxis.setTickLabelFont(font);

    setLegendFont(chart);

    font = new Font("sans-serif", Font.BOLD, BASE_TITLE_LABEL_SIZE);//$NON-NLS-1$
    TextTitle title = chart.getTitle();
    if (title != null) {
        title.setFont(font);
    }

    font = null;

    if (render instanceof BarRenderer) {
        CategoryDataset dataset = chart.getCategoryPlot().getDataset();
        if (dataset != null) {
            int rowCount = dataset.getRowCount();
            List<?> columnKeys = dataset.getColumnKeys();
            if (!isContainCJKCharacter(columnKeys.toArray())) {
                domainAxis.setTickLabelFont(new Font("Tahoma", Font.PLAIN, 10));//$NON-NLS-1$
            }
            ((BarRenderer) render).setItemMargin(-0.40 * rowCount);

            // TDQ-12621 add Tooltip for Lable
            for (Object colKey : columnKeys) {
                domainAxis.addCategoryLabelToolTip(colKey.toString(), colKey.toString());
            }
        }
        domainAxis.setUpperMargin(0.1);
        // TDQ-12621 Only display in 1 line for the label, other chars will be displayed as "..."
        domainAxis.setMaximumCategoryLabelLines(1);

        // ADD msjian TDQ-5111 2012-4-9: set Bar Width and let it look well
        // not do this when the bar is horizontal Orientation
        if (orientation == null) {
            ((BarRenderer) render).setMaximumBarWidth(0.2);
        }
        // TDQ-5111~
    }
    // ~10998
}

From source file:j2se.jfreechart.barchart.BarChartDemo1.java

/**
 * Creates a sample chart./*w  w  w .  j a v a 2  s  .  co m*/
 * 
 * @param dataset  the dataset.
 * 
 * @return The chart.
 */
private static JFreeChart createChart(CategoryDataset dataset) {

    // create the chart...
    JFreeChart chart = ChartFactory.createBarChart("Bar Chart Demo", // chart title
            "Category", // domain axis label
            "Value", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );

    // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...

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

    // get a reference to the plot for further customisation...
    CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setDomainGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.white);

    // set the range axis to display integers only...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);

    // set up gradient paints for series...
    GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, new Color(0, 0, 64));
    GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, new Color(0, 64, 0));
    GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, new Color(64, 0, 0));
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);

    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));
    // OPTIONAL CUSTOMISATION COMPLETED.

    return chart;

}

From source file:com.opensourcestrategies.financials.reports.JFreeFinancialCharts.java

/**
 * Liquidity snapshot chart.  Documentation is at http://www.opentaps.org/docs/index.php/Financials_Home_Screen
 *
 * Because a user might not have permission to view balances in all areas, this method takes into consideration
 * the ability to view various bars in the chart.
 *
 * @param accountsMap Map of accounts keyed by the glAccountType
 * @return String filename pointing to the chart, to be used with showChart URI request
 *///from   w w w .  ja  v  a  2  s.c om
public static String createLiquiditySnapshotChart(Map<String, GenericValue> accountsMap,
        List<GenericValue> creditCardAccounts, Locale locale, boolean hasReceivablesPermission,
        boolean hasPayablesPermission, boolean hasInventoryPermission)
        throws GenericEntityException, IOException {
    Map<String, Object> uiLabelMap = UtilMessage.getUiLabels(locale);

    // create the dataset
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    // compile the four bars
    if (hasReceivablesPermission) {
        double cashBalance = 0.0;
        cashBalance += getPostedBalance(accountsMap.get("UNDEPOSITED_RECEIPTS"));
        cashBalance += getPostedBalance(accountsMap.get("BANK_STLMNT_ACCOUNT"));
        dataset.addValue(cashBalance, "", (String) uiLabelMap.get("FinancialsCashEquivalents"));

        double receivablesBalance = 0.0;
        receivablesBalance += getPostedBalance(accountsMap.get("ACCOUNTS_RECEIVABLE"));
        // merchant account settlement balances are receivable
        receivablesBalance += getPostedBalance(accountsMap.get("MRCH_STLMNT_ACCOUNT"));
        dataset.addValue(receivablesBalance, "", (String) uiLabelMap.get("FinancialsReceivables"));
    }
    if (hasInventoryPermission) {
        double inventoryBalance = 0.0;
        inventoryBalance += getPostedBalance(accountsMap.get("INVENTORY_ACCOUNT"));
        inventoryBalance += getPostedBalance(accountsMap.get("RAWMAT_INVENTORY"));
        inventoryBalance += getPostedBalance(accountsMap.get("WIP_INVENTORY"));
        dataset.addValue(inventoryBalance, "", (String) uiLabelMap.get("WarehouseInventory"));
    }
    if (hasPayablesPermission) {
        double payablesBalance = 0.0;
        payablesBalance += getPostedBalance(accountsMap.get("ACCOUNTS_PAYABLE"));
        payablesBalance += getPostedBalance(accountsMap.get("COMMISSIONS_PAYABLE"));
        payablesBalance += getPostedBalance(accountsMap.get("UNINVOICED_SHIP_RCPT"));
        dataset.addValue(payablesBalance, "", (String) uiLabelMap.get("FinancialsPayables"));
    }

    // set up the chart
    JFreeChart chart = ChartFactory.createBarChart((String) uiLabelMap.get("FinancialsLiquiditySnapshot"), // chart title
            null, // domain axis label
            null, // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            false, // include legend
            true, // tooltips
            false // urls
    );
    chart.setBackgroundPaint(Color.white);
    chart.setBorderVisible(true);
    chart.setPadding(new RectangleInsets(5.0, 5.0, 5.0, 5.0));

    // get a reference to the plot for further customisation...
    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);

    // get the bar renderer to put effects on the bars
    final BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false); // disable bar outlines

    // set up gradient paint on bar
    final GradientPaint gp = new GradientPaint(0.0f, 0.0f, Color.GREEN, 0.0f, 0.0f, Color.GRAY);
    renderer.setSeriesPaint(0, gp);

    // change the auto tick unit selection to integer units only...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // tilt the category labels so they fit
    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));

    // save as a png and return the file name
    return ServletUtilities.saveChartAsPNG(chart, 400, 300, null);
}

From source file:org.sipfoundry.sipxconfig.site.cdr.CdrReports.java

private static Image createExtensionsChartImage(List<CdrGraphBean> extensions, String xAxisLabel,
        String yAxisLabel) {//from w  ww  .j av a2 s .  c  o m
    // Create a dataset...
    DefaultCategoryDataset data = new DefaultCategoryDataset();

    // Fill dataset with beans data
    for (CdrGraphBean extension : extensions) {
        data.setValue(extension.getCount(), extension.getKey(), extension.getKey());
    }

    // Create a chart with the dataset
    JFreeChart barChart = ChartFactory.createBarChart3D(EMPTY_TITLE, xAxisLabel, yAxisLabel, data,
            PlotOrientation.VERTICAL, true, true, true);
    barChart.setBackgroundPaint(Color.lightGray);
    barChart.getTitle().setPaint(Color.BLACK);
    CategoryPlot p = barChart.getCategoryPlot();
    p.setRangeGridlinePaint(Color.red);

    // Create and return the image with the size specified in the XML design
    return barChart.createBufferedImage(500, 220, BufferedImage.TYPE_INT_RGB, null);
}

From source file:org.sipfoundry.sipxconfig.site.cdr.CdrReports.java

private static Image createMinutesOutgoingCallsChartImage(List<CdrMinutesGraphBean> minutesOutgoingCalls,
        String xAxisLabel, String yAxisLabel) {
    // Create a dataset...
    DefaultCategoryDataset data = new DefaultCategoryDataset();

    // Fill dataset with beans data
    for (CdrMinutesGraphBean minutesOutgoingCall : minutesOutgoingCalls) {
        data.setValue(minutesOutgoingCall.getMinutes() / 60000, minutesOutgoingCall.getExtension(),
                minutesOutgoingCall.getExtension());
    }//from   www  . jav a 2  s  .c om

    // Create a chart with the dataset
    JFreeChart barChart = ChartFactory.createBarChart3D(EMPTY_TITLE, xAxisLabel, yAxisLabel, data,
            PlotOrientation.VERTICAL, true, true, true);
    barChart.setBackgroundPaint(Color.lightGray);
    barChart.getTitle().setPaint(Color.BLACK);
    CategoryPlot p = barChart.getCategoryPlot();
    p.setRangeGridlinePaint(Color.red);

    // Create and return the image with the size specified in the XML design
    return barChart.createBufferedImage(500, 220, BufferedImage.TYPE_INT_RGB, null);
}

From source file:org.talend.dataprofiler.chart.ChartDecorator.java

/**
 * Decorate the benford law chart. in this method the line chart will be overlay on top of bar chart.
 * // www  . j  av  a 2 s  . c  o m
 * @param dataset
 * @param barChart
 * @param title
 * @param categoryAxisLabel
 * @param dotChartLabels
 * @param formalValues
 * @return JFreeChart
 */
@SuppressWarnings("deprecation")
public static JFreeChart decorateBenfordLawChartByKCD(CategoryDataset dataset, Object customerDataset,
        JFreeChart barChart, String title, String categoryAxisLabel, List<String> dotChartLabels,
        double[] formalValues) {
    CategoryPlot barplot = barChart.getCategoryPlot();
    decorateBarChart(barChart, new BenfordLawLineAndShapeRenderer());
    // display percentage on top of the bar
    DecimalFormat df = new DecimalFormat(PERCENT_FORMAT);
    barplot.getRenderer().setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator("{2}", df)); //$NON-NLS-1$
    barplot.getRenderer().setBasePositiveItemLabelPosition(
            new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_CENTER));
    // set the display of Y axis
    NumberAxis numAxis = (NumberAxis) barplot.getRangeAxis();
    numAxis.setNumberFormatOverride(df);

    CategoryDataset lineDataset = getLineDataset(dotChartLabels, formalValues);
    JFreeChart lineChart = ChartFactory.createLineChart(null, title, categoryAxisLabel, lineDataset,
            PlotOrientation.VERTICAL, false, false, false);
    CategoryPlot plot = lineChart.getCategoryPlot();
    if (customerDataset != null) {
        barplot.setDataset(2, new EncapsulationCumstomerDataset(dataset, customerDataset));
    }
    // show the value on the right axis of the chart(keep the comment)
    // NumberAxis numberaxis = new NumberAxis(DefaultMessagesImpl.getString("TopChartFactory.Value"));
    // plot.setRangeAxis(10, numberaxis);

    NumberAxis vn = (NumberAxis) plot.getRangeAxis();
    vn.setNumberFormatOverride(df);
    // set points format
    LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    renderer.setPaint(COLOR_LIST.get(1));
    renderer.setSeriesShape(1, new Rectangle2D.Double(-1.5, -1.5, 3, 3));
    renderer.setShapesVisible(true); // show the point shape
    renderer.setBaseLinesVisible(false);// do not show the line

    // add the bar chart into the line chart
    CategoryItemRenderer barChartRender = barplot.getRenderer();
    barplot.setDataset(0, lineDataset);
    barplot.setRenderer(0, plot.getRenderer());
    barplot.setDataset(1, dataset);
    barplot.setRenderer(1, barChartRender);
    return barChart;
}

From source file:eu.cassandra.training.utils.ChartUtils.java

/**
 * This function is used for the visualization of a Comparative Response Model
 * Histogram./*from   w  w  w .  j ava  2 s  . c  o m*/
 * 
 * @param title
 *          The title of the chart.
 * @param x
 *          The unit on the X axis of the chart.
 * @param y
 *          The unit on the Y axis of the chart.
 * @param dataBefore
 *          The array of values before the response.
 * @param dataAfter
 *          The array of values after the response.
 * @return a chart panel with the graphical representation.
 */
public static ChartPanel createDailyResponseHistogram(String title, String x, String y, double[] dataBefore,
        double[] dataAfter) {
    final DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    for (int i = 0; i < dataBefore.length; i++) {
        dataset.addValue(dataBefore[i], "Basic Scheme", "" + i + "");
        if (i < dataAfter.length)
            dataset.addValue(dataAfter[i], "New Scheme", "" + i + "");
        else
            dataset.addValue(0, "New Scheme", "" + i + "");
    }

    JFreeChart chart = ChartFactory.createBarChart3D(title, // chart title
            x, // domain axis label
            y, // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            false // urls
    );

    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setForegroundAlpha(1.0f);

    // left align the category labels...
    final CategoryAxis axis = plot.getDomainAxis();
    final CategoryLabelPositions p = axis.getCategoryLabelPositions();

    final CategoryLabelPosition left = new CategoryLabelPosition(RectangleAnchor.LEFT,
            TextBlockAnchor.CENTER_LEFT, TextAnchor.CENTER_LEFT, 0.0, CategoryLabelWidthType.RANGE, 0.30f);
    axis.setCategoryLabelPositions(CategoryLabelPositions.replaceLeftPosition(p, left));

    return new ChartPanel(chart);
}

From source file:com.opensourcestrategies.crmsfa.reports.JFreeCrmsfaCharts.java

/**
 * Opportunities by stage.  Description at
 * http://www.opentaps.org/docs/index.php/CRMSFA_Dashboard
 * Note that this counts all the opportunities in the system for now.
 *//*w w  w .j av a2 s .c o  m*/
public static String createOpportunitiesbyStageChart(Delegator delegator, Locale locale)
        throws GenericEntityException, IOException {
    Map uiLabelMap = UtilMessage.getUiLabels(locale);

    DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    String currency = UtilConfig.getPropertyValue("crmsfa", "defaultCurrencyUomId");

    // get all sales opportunity stages that are not closed, or lost
    List<GenericValue> salesOpportunityStages = ReportHelper
            .findSalesOpportunityStagesForDashboardReporting(delegator);

    // report number of leads for each status
    for (GenericValue stage : salesOpportunityStages) {
        String opportunityStageId = stage.getString("opportunityStageId");
        EntityCondition conditions = EntityCondition.makeCondition(EntityOperator.AND,
                EntityCondition.makeCondition("opportunityStageId", EntityOperator.EQUALS, opportunityStageId),
                EntityCondition.makeCondition("currencyUomId", EntityOperator.EQUALS, currency));
        List<GenericValue> salesOpportunityEstimatedAmountTotals = delegator
                .findByConditionCache("SalesOpportunityEstimatedAmountTotalByStage", conditions, null, null);

        if (salesOpportunityEstimatedAmountTotals != null && !salesOpportunityEstimatedAmountTotals.isEmpty()) {
            GenericValue salesOpportunityEstimatedAmountTotal = salesOpportunityEstimatedAmountTotals.get(0);
            dataset.addValue(salesOpportunityEstimatedAmountTotal.getDouble("estimatedAmountTotal"), "",
                    (String) stage.get("description", locale));
        } else {
            dataset.addValue(0, "", (String) stage.get("description", locale));
        }
    }

    // set up the chart
    JFreeChart chart = ChartFactory.createBarChart(
            (String) UtilMessage.expandLabel("CrmOpportunitiesbyStage", locale,
                    UtilMisc.toMap("currency", currency)),
            null, null, dataset, PlotOrientation.HORIZONTAL, false, true, false);
    chart.setBackgroundPaint(Color.white);
    chart.setBorderVisible(true);
    chart.setPadding(new RectangleInsets(5.0, 5.0, 5.0, 5.0));

    // get a reference to the plot for further customisation...
    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);

    // get the bar renderer to put effects on the bars
    final BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false); // disable bar outlines

    // set up gradient paint on bar
    final GradientPaint gp = new GradientPaint(0.0f, 0.0f, new Color(206, 246, 245), 0.0f, 0.0f,
            new Color(51, 204, 204));
    renderer.setSeriesPaint(0, gp);

    // change the auto tick unit selection to integer units only...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // save as a png and return the file name
    return ServletUtilities.saveChartAsPNG(chart, 360, 200, null);
}