// handler to update the gps tagging tolerance
commercialZoneBlockLength.addBlurHandler(blockLengthBlurHandler);
residentialZoneBlockLength.addBlurHandler(blockLengthBlurHandler);
industrialZoneBlockLength.addBlurHandler(blockLengthBlurHandler);
eventBus.addHandler(LoadCurrentStudyRegionEvent.TYPE, new LoadCurrentStudyRegionEventHandler() {
@Override
public void onLoad(LoadCurrentStudyRegionEvent event) {
for (Iterator iterator = studyRegionList.iterator(); iterator
.hasNext();) {