public static DateRange extractDateRange(GridDataset gridDataset) {
DateRange maxDateRange = null;
for (GridDataset.Gridset gridset : gridDataset.getGridsets()) {
GridCoordSystem gsys = gridset.getGeoCoordSystem();
DateRange dateRange;
CoordinateAxis1DTime time1D = gsys.getTimeAxis1D();
if (time1D != null) {
dateRange = time1D.getDateRange();
} else {
CoordinateAxis time = gsys.getTimeAxis();
if (time == null) continue;
try {
DateUnit du = new DateUnit(time.getUnitsString());
Date minDate = du.makeDate(time.getMinValue());
Date maxDate = du.makeDate(time.getMaxValue());
dateRange = new DateRange(minDate, maxDate);
} catch (Exception e) {
logger.warn("Illegal Date Unit " + time.getUnitsString());
continue;
}
}
if (maxDateRange == null) maxDateRange = dateRange;
else maxDateRange.extend(dateRange);
}
return maxDateRange;
}
