private RichTooltip buildTooltip() {
if (histogram.countValues() == 0) {
return null;
}
NumberFormat formatter = DecimalFormat.getNumberInstance();
formatter.setMaximumFractionDigits(3);
String average = formatter.format(histogram.getAverage());
String averageInRange = formatter.format(histogram.getAverageInRange());
RichTooltip richTooltip = new RichTooltip();
richTooltip.setTitle("Statistics (In-Range)");
richTooltip.addDescriptionSection(
"<html><b># of Values:</b> "
+ histogram.countValues()
+ " ("
+ histogram.countInRange()
+ ")");
richTooltip.addDescriptionSection(
"<html><b>Average:</b> " + average + " (" + averageInRange + ")");
richTooltip.addDescriptionSection(
"<html><b>Median:</b> "
+ histogram.getMedian()
+ " ("
+ histogram.getMedianInRange()
+ ")");
return richTooltip;
}
