private void onPlotClicked(PointF point) {
// make sure the point lies within the graph area. we use gridrect
// because it accounts for margins and padding as well.
if (plot.containsPoint(point.x, point.y)) {
Number x = plot.getXVal(point);
Number y = plot.getYVal(point);
selection = null;
double xDistance = 0;
double yDistance = 0;
// find the closest value to the selection:
for (SeriesBundle<XYSeries, ? extends XYSeriesFormatter> sfPair :
plot.getRegistry().getSeriesAndFormatterList()) {
XYSeries series = sfPair.getSeries();
for (int i = 0; i < series.size(); i++) {
Number thisX = series.getX(i);
Number thisY = series.getY(i);
if (thisX != null && thisY != null) {
double thisXDistance = Region.measure(x, thisX).doubleValue();
double thisYDistance = Region.measure(y, thisY).doubleValue();
if (selection == null) {
selection = new Pair<>(i, series);
xDistance = thisXDistance;
yDistance = thisYDistance;
} else if (thisXDistance < xDistance) {
selection = new Pair<>(i, series);
xDistance = thisXDistance;
yDistance = thisYDistance;
} else if (thisXDistance == xDistance
&& thisYDistance < yDistance
&& thisY.doubleValue() >= y.doubleValue()) {
selection = new Pair<>(i, series);
xDistance = thisXDistance;
yDistance = thisYDistance;
}
}
}
}
} else {
// if the press was outside the graph area, deselect:
selection = null;
}
if (selection == null) {
selectionWidget.setText(NO_SELECTION_TXT);
} else {
selectionWidget.setText(
"Selected: "
+ selection.second.getTitle()
+ " Value: "
+ selection.second.getY(selection.first));
}
plot.redraw();
}
/**
* Removes an existing value from the series.
*
* @param index the index in the series of the value to remove
*/
public synchronized void remove(int index) {
super.remove(index);
double removedValue = mValue.remove(index);
if (removedValue == mMinValue || removedValue == mMaxValue) {
initRange();
}
}
private void updatePlot(SeriesSize seriesSize) {
// Remove all current series from each plot
plot.clear();
// Setup our Series with the selected number of elements
series1 =
new SimpleXYSeries(
Arrays.asList(series1Numbers), SimpleXYSeries.ArrayFormat.Y_VALS_ONLY, "Us");
series2 =
new SimpleXYSeries(
Arrays.asList(series2Numbers), SimpleXYSeries.ArrayFormat.Y_VALS_ONLY, "Them");
plot.setDomainBoundaries(-1, series1.size(), BoundaryMode.FIXED);
plot.setRangeUpperBoundary(
SeriesUtils.minMax(series1, series2).getMaxY().doubleValue() + 1, BoundaryMode.FIXED);
if (seriesSize != null) {
switch (seriesSize) {
case TEN:
plot.setDomainStep(StepMode.INCREMENT_BY_VAL, 2);
break;
case TWENTY:
plot.setDomainStep(StepMode.INCREMENT_BY_VAL, 4);
break;
case SIXTY:
plot.setDomainStep(StepMode.INCREMENT_BY_VAL, 6);
break;
}
}
// add a new series' to the xyplot:
if (series1CheckBox.isChecked()) plot.addSeries(series1, formatter1);
if (series2CheckBox.isChecked()) plot.addSeries(series2, formatter2);
// Setup the BarRenderer with our selected options
MyBarRenderer renderer = plot.getRenderer(MyBarRenderer.class);
renderer.setBarOrientation((BarRenderer.BarOrientation) spRenderStyle.getSelectedItem());
final BarRenderer.BarGroupWidthMode barGroupWidthMode =
(BarRenderer.BarGroupWidthMode) spWidthStyle.getSelectedItem();
renderer.setBarGroupWidth(
barGroupWidthMode,
barGroupWidthMode == BarRenderer.BarGroupWidthMode.FIXED_WIDTH
? sbFixedWidth.getProgress()
: sbVariableWidth.getProgress());
if (BarRenderer.BarOrientation.STACKED.equals(spRenderStyle.getSelectedItem())) {
plot.getInnerLimits().setMaxY(15);
} else {
plot.getInnerLimits().setMaxY(0);
}
plot.redraw();
}
/** Removes all the values from the series. */
public synchronized void clear() {
super.clear();
mValue.clear();
initRange();
}
/**
* Adds a new value to the series.
*
* @param x the value for the X axis
* @param y the value for the Y axis
* @param value the value
*/
public synchronized void add(double x, double y, double value) {
super.add(x, y);
mValue.add(value);
updateRange(value);
}
/**
* @param x
* @param numOfDays
* @param y
*/
public void add(Date x, long numOfDays, double y) {
long days = x.getTime() / DAY + 1;
for (int i = 0; i < numOfDays; i++) super.add(days + i, y);
}
/**
* Adds a new value to the series.
*
* @param x the date / time value for the X axis
* @param y the value for the Y axis
*/
public void add(Date x, double y) {
super.add(x.getTime() / DAY + 1, y);
}
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;
}
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;
}