/**
* precondition : 'attribute' MUST contain number values only
*
* @param cases
* @param attribute
* @return DefaultXYDataset with all values of 'attribute' against event numbers or timestamps.
*/
private XYSeriesCollection getDataAttributes(
String[] attributes, boolean byTime, double timesize) {
XYSeriesCollection result = new XYSeriesCollection();
for (int index = 0; index < attributes.length; index++) {
String attribute = attributes[index];
Integer i = 0;
XYSeries row = new XYSeries(attribute);
for (ProcessInstance pi : mylog.getInstances()) {
Integer x = 0; // count event number
Date begin = pi.getAuditTrailEntries().first().getTimestamp(); // starting
// time
// of
// process
// instance
for (AuditTrailEntry ate : pi.getListOfATEs()) {
if (ate.getAttributes().containsKey(attribute)) {
Double val;
val = Double.valueOf(ate.getAttributes().get(attribute));
if (byTime) {
row.add(timediff(begin, ate.getTimestamp()) / timesize, val.doubleValue());
} else {
row.add(x.doubleValue(), val.doubleValue());
}
}
x++; // event number in case
}
i++; // case number
}
result.addSeries(row);
}
return result;
}
/** Creates fundamental diagram chart. */
private JFreeChart makeFDChart() {
updateFDSeries();
XYSeriesCollection dataset = new XYSeriesCollection();
dataset.addSeries(ffFD);
dataset.addSeries(cFD);
dataset.addSeries(cdFD);
JFreeChart chart =
ChartFactory.createXYLineChart(
null, // chart title
"Density (vpm)", // x axis label
"Flow (vph)", // y axis label
dataset, // data
PlotOrientation.VERTICAL,
false, // include legend
false, // tooltips
false // urls
);
XYPlot plot = (XYPlot) chart.getPlot();
plot.getRenderer().setSeriesPaint(0, Color.GREEN);
plot.getRenderer().setSeriesPaint(1, Color.RED);
plot.getRenderer().setSeriesPaint(2, Color.BLUE);
plot.getRenderer().setStroke(new BasicStroke(2));
return chart;
}
private IntervalXYDataset getHistrogrammedDataAttributes(
String[] attributes, long barsize, long timesize) {
IntervalXYDataset dataset = null;
if (no_intervals) {
dataset = new XYSeriesCollection();
} else {
dataset = new YIntervalSeriesCollection();
}
for (int index = 0; index < attributes.length; index++) {
Histogram histogram = new Histogram(barsize);
String attribute = attributes[index];
for (ProcessInstance pi : mylog.getInstances()) {
Date begin;
try {
begin = pi.getAuditTrailEntryList().get(0).getTimestamp();
} catch (Exception e) {
Message.add(e.getMessage(), Message.ERROR);
return null;
} // starting time of process instance
int j = 0;
for (AuditTrailEntry ate : pi.getListOfATEs()) {
if (ate.getAttributes().containsKey(attribute)) {
Double val;
val = Double.valueOf(ate.getAttributes().get(attribute));
if (xbox.getSelectedIndex() == 2) {
histogram.addValue(j, val);
}
if (xbox.getSelectedIndex() == 3) {
histogram.addValue(timediff(begin, ate.getTimestamp()), val);
}
j++;
}
}
}
if (no_intervals) {
((XYSeriesCollection) dataset).addSeries(histogram.getXYSeries(attribute, timesize));
} else {
((YIntervalSeriesCollection) dataset)
.addSeries(histogram.getYIntervalSeries(attribute, timesize));
}
}
return dataset;
}
public String generateXYChart(
String section, HttpSession session, PrintWriter pw, String courseId, int studentId) {
/*int groupId=0;
if (groupName.equals("All")){
groupId=0;
}else{
groupId = studStatisticBean.getGroupIdByName(groupName);
}*/
String filename = null;
try {
// Retrieve list of WebHits
StudentsConceptChartDataSet cDataSet =
new StudentsConceptChartDataSet(studStatisticBean, courseId, studentId);
ArrayList list = cDataSet.getDataByHitConcept(section);
// Throw a custom NoDataException if there is no data
if (list.size() == 0) {
System.out.println("No data has been found");
throw new NoDataException();
}
// Create and populate an XYSeries Collection
XYSeries dataSeries = new XYSeries("Students progress line");
Iterator iter = list.listIterator();
while (iter.hasNext()) {
StudentsConceptHit ch = (StudentsConceptHit) iter.next();
dataSeries.add(ch.getOrdNumb(), ch.getHitDegree());
}
XYSeriesCollection xyDataset = new XYSeriesCollection(dataSeries);
NumberFormat nf = NumberFormat.getIntegerInstance();
NumberFormat nf2 = NumberFormat.getInstance();
String cTitle = null;
// StandardXYToolTipGenerator ttg = new
// StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,nf,nf2);
CustomXYToolTipGenerator ttg = new CustomXYToolTipGenerator();
ttg.addToolTipSeries(cDataSet.getConceptNames());
StandardXYURLGenerator sxyUrlGen =
new StandardXYURLGenerator("#", xyDataset.getSeriesName(0), "PassedConceptOrdNum");
ValueAxis ordNumAxis = new NumberAxis("Concept ordinal number");
NumberAxis valueAxis = new NumberAxis("Current knowledge");
// valueAxis.setAutoRangeIncludesZero(true);
valueAxis.setRange(0.0, 6.0); // override default
ordNumAxis.setAutoRange(true);
ordNumAxis.setLowerMargin(0.0);
StandardXYItemRenderer renderer =
new StandardXYItemRenderer(
StandardXYItemRenderer.LINES + StandardXYItemRenderer.SHAPES, ttg, sxyUrlGen);
Marker marker = new ValueMarker(1.50); // /
Marker marker2 = new ValueMarker(2.50);
Marker marker3 = new ValueMarker(3.50);
Marker marker4 = new ValueMarker(4.50);
Marker marker5 = new ValueMarker(5.00);
renderer.setShapesFilled(true);
XYPlot plot = new XYPlot(xyDataset, ordNumAxis, valueAxis, renderer);
plot.addRangeMarker(marker);
plot.addRangeMarker(marker2);
plot.addRangeMarker(marker3);
plot.addRangeMarker(marker4);
plot.addRangeMarker(marker5);
XYTextAnnotation xyBad = new XYTextAnnotation("Bad", 1, 1);
xyBad.setX(0.2);
xyBad.setY(0.75);
XYTextAnnotation xyNotBad = new XYTextAnnotation("Not Bad", 1, 1);
xyNotBad.setX(0.2);
xyNotBad.setY(2);
XYTextAnnotation xyGood = new XYTextAnnotation("Good", 1, 1);
xyGood.setX(0.2);
xyGood.setY(3);
XYTextAnnotation xyVeryGood = new XYTextAnnotation("Very Good", 1, 1);
xyVeryGood.setX(0.2);
xyVeryGood.setY(4);
XYTextAnnotation xyExcellent = new XYTextAnnotation("Excellent", 1, 1);
xyExcellent.setX(0.2);
xyExcellent.setY(4.75);
XYTextAnnotation xyExpert = new XYTextAnnotation("Expert", 1, 1);
xyExpert.setX(0.2);
xyExpert.setY(5.25);
plot.addAnnotation(xyBad);
plot.addAnnotation(xyNotBad);
plot.addAnnotation(xyGood);
plot.addAnnotation(xyVeryGood);
plot.addAnnotation(xyExcellent);
plot.addAnnotation(xyExpert);
JFreeChart chart = new JFreeChart("", 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;
}
