Hi All,
I've been exploring the use of GridDataset object in order to get a Date
object from the NetcdfDataset without identifying time units, etc.
So far I'm only getting nulls when using gds.getStartDate(),
gds.getEndDate()
I've attached my test class. The other bounds are retrieved without
problem.
Thanks for your suggestions.
Dave
package gov.noaa.eds.threddsutilities.util;
import java.util.List;
import org.junit.Test;
import ucar.nc2.constants.AxisType;
import ucar.nc2.dataset.CoordinateAxis;
import ucar.nc2.dataset.NetcdfDataset;
import ucar.nc2.dt.TypedDatasetFactory;
import ucar.nc2.dt.grid.GridDataset;
import static org.junit.Assert.*;
public class ThreddsExtentUtilTest {
@Test
public void gdsTest() {
String urlStr =
"http://edac-dap.northerngulfinstitute.org/thredds/dodsC/ncom_reg1_agg/NCOM_Region_1_Aggregation_fmrc.ncd";;
try {
NetcdfDataset ncd = NetcdfDataset.openDataset(urlStr);
List<CoordinateAxis> coordAxes = ncd.getCoordinateAxes();
StringBuilder errlog = new StringBuilder();
GridDataset gds =
(GridDataset)TypedDatasetFactory.open(ucar.nc2.constants.FeatureType.GRID, ncd,
null, errlog);
for (CoordinateAxis coordAxis : coordAxes) {
if (coordAxis.getAxisType()==AxisType.Lat) {
System.out.println("GridDataset minLat=" +
gds.getBoundingBox().getLatMin());
System.out.println("GridDataset maxLat=" +
gds.getBoundingBox().getLatMax());
System.out.println("CoordAxis minLat=" +
Double.toString(coordAxis.getMaxValue()));
System.out.println("CoordAxis maxLat=" +
Double.toString(coordAxis.getMaxValue()));
}
if (coordAxis.getAxisType()==AxisType.Time) {
if (gds.getStartDate()!=null) { //Ideal if we can get a
Date object
System.out.println("GridDataset startTime=" +
gds.getStartDate().toGMTString());
} else {
System.out.println("GridDataset
startTime=null");
}
if (gds.getEndDate()!=null) { //Ideal if we can get a
Date object
System.out.println("GridDataset endTime=" +
gds.getEndDate().toGMTString());
} else {
System.out.println("GridDataset
endTime=null");
}
System.out.println("CoordAxis startTime=" +
Double.toString(coordAxis.getMinValue()));
System.out.println("CoordAxis endTime=" +
Double.toString(coordAxis.getMaxValue()));
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
