private static JFreeChart createChart(TableXYDataset tablexydataset) {
DateAxis dateaxis = new DateAxis("Date");
dateaxis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
dateaxis.setLowerMargin(0.01D);
dateaxis.setUpperMargin(0.01D);
NumberAxis numberaxis = new NumberAxis("Count");
numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
numberaxis.setUpperMargin(0.10000000000000001D);
StackedXYBarRenderer stackedxybarrenderer = new StackedXYBarRenderer(0.14999999999999999D);
stackedxybarrenderer.setDrawBarOutline(false);
stackedxybarrenderer.setBaseItemLabelsVisible(true);
stackedxybarrenderer.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator());
stackedxybarrenderer.setBasePositiveItemLabelPosition(
new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BOTTOM_CENTER));
stackedxybarrenderer.setBaseToolTipGenerator(
new StandardXYToolTipGenerator(
"{0} : {1} = {2}", new SimpleDateFormat("yyyy"), new DecimalFormat("0")));
XYPlot xyplot = new XYPlot(tablexydataset, dateaxis, numberaxis, stackedxybarrenderer);
JFreeChart jfreechart = new JFreeChart("Holes-In-One / Double Eagles", xyplot);
jfreechart.removeLegend();
jfreechart.addSubtitle(new TextTitle("PGA Tour, 1983 to 2003"));
TextTitle texttitle =
new TextTitle(
"http://www.golfdigest.com/majors/masters/index.ssf?/majors/masters/gw20040402albatross.html",
new Font("Dialog", 0, 8));
jfreechart.addSubtitle(texttitle);
jfreechart.setTextAntiAlias(RenderingHints.VALUE_TEXT_ANTIALIAS_DEFAULT);
LegendTitle legendtitle = new LegendTitle(xyplot);
legendtitle.setBackgroundPaint(Color.white);
legendtitle.setFrame(new BlockBorder());
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
return jfreechart;
}
public String generateXYAreaChart(
HttpSession session, PrintWriter pw, String courseId, int studentId) {
String filename = null;
/* int groupId=0;
if (groupName.equals("All")){
groupId=0;
}else{
groupId = studStatisticBean.getGroupIdByName(groupName);
}*/
try {
// Retrieve list of WebHits for each section and populate a TableXYDataset
StudentsConceptChartDataSet cDataSet =
new StudentsConceptChartDataSet(studStatisticBean, courseId, studentId);
// cDataSet.setStudentStatisticBeanIdRef(studStatisticBean);
ArrayList sections = cDataSet.getSections();
Iterator sectionIter = sections.iterator();
DefaultTableXYDataset dataset = new DefaultTableXYDataset();
while (sectionIter.hasNext()) {
String section = (String) sectionIter.next();
ArrayList list = cDataSet.getDataByHitConcept(section);
XYSeries dataSeries = new XYSeries(section, true, false);
Iterator webHitIter = list.iterator();
while (webHitIter.hasNext()) {
StudentsConceptHit cHit = (StudentsConceptHit) webHitIter.next();
dataSeries.add(cHit.getOrdNumb(), cHit.getHitDegree());
}
dataset.addSeries(dataSeries);
}
// Throw a custom NoDataException if there is no data
if (dataset.getItemCount() == 0) {
System.out.println("No data has been found");
throw new NoDataException();
}
// Create tooltip and URL generators
SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy", Locale.UK);
StandardXYToolTipGenerator ttg =
new StandardXYToolTipGenerator(
StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT, sdf, NumberFormat.getInstance());
TimeSeriesURLGenerator urlg =
new TimeSeriesURLGenerator(sdf, "bar_chart.jsp", "series", "hitDate");
// Create the X-Axis
DateAxis xAxis = new DateAxis(null);
xAxis.setLowerMargin(0.0);
xAxis.setUpperMargin(0.0);
// Create the X-Axis
NumberAxis yAxis = new NumberAxis(null);
yAxis.setAutoRangeIncludesZero(true);
// Create the renderer
StackedXYAreaRenderer renderer =
new StackedXYAreaRenderer(XYAreaRenderer.AREA_AND_SHAPES, ttg, urlg);
renderer.setSeriesPaint(0, new Color(255, 255, 180));
renderer.setSeriesPaint(1, new Color(206, 230, 255));
renderer.setSeriesPaint(2, new Color(255, 230, 230));
renderer.setSeriesPaint(3, new Color(206, 255, 206));
renderer.setShapePaint(Color.gray);
renderer.setShapeStroke(new BasicStroke(0.5f));
renderer.setShape(new Ellipse2D.Double(-3, -3, 6, 6));
renderer.setOutline(true);
// Create the plot
XYPlot plot = new XYPlot(dataset, xAxis, yAxis, renderer);
plot.setForegroundAlpha(0.65f);
// Reconfigure Y-Axis so the auto-range knows that the data is stacked
yAxis.configure();
// Create the chart
JFreeChart chart = new JFreeChart(null, JFreeChart.DEFAULT_TITLE_FONT, plot, true);
chart.setBackgroundPaint(java.awt.Color.white);
// Write the chart image to the temporary directory
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
filename = ServletUtilities.saveChartAsPNG(chart, 600, 400, info, session);
// Write the image map to the PrintWriter
ChartUtilities.writeImageMap(pw, filename, info);
pw.flush();
} catch (NoDataException e) {
System.out.println(e.toString());
filename = "public_nodata_500x300.png";
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace(System.out);
filename = "public_error_500x300.png";
}
return filename;
}