*/
private void makePaintIndex() {
if (this.plot == null) {
return;
}
WaferMapDataset data = this.plot.getDataset();
Number dataMin = data.getMinValue();
Number dataMax = data.getMaxValue();
Set uniqueValues = data.getUniqueValues();
if (uniqueValues.size() <= this.paintLimit) {
int count = 0; // assign a color for each unique value
for (Iterator i = uniqueValues.iterator(); i.hasNext();) {
this.paintIndex.put(i.next(), new Integer(count++));
}