@Test
@Category(NeedsCdmUnitTest.class)
public void testCoordExtract() throws IOException {
try (ucar.nc2.dt.grid.GridDataset dataset =
GridDataset.open(
TestDir.cdmUnitTestDir + "formats/grib2/coordExtract/TestCoordExtract.grib2")) {
System.out.printf("%s%n", dataset.getLocation());
GeoGrid grid = dataset.findGridByName("Convective_inhibition_surface");
assert null != grid;
GridCoordSystem gcs = grid.getCoordinateSystem();
assert null != gcs;
assert grid.getRank() == 3;
System.out.printf("%s%n", gcs);
int result[] = gcs.findXYindexFromLatLon(41.3669944444, -91.140575, null);
System.out.printf("%d %d %n", result[0], result[1]);
assert result[0] == 538;
assert result[1] == 97;
}
}
@Test
public void bugReport() throws IOException {
try (GridDataset dataset =
GridDataset.open(
"http://www.unidata.ucar.edu/software/netcdf/examples/sresa1b_ncar_ccsm3_0_run1_200001.nc")) {
GridDatatype firstGridInfo = dataset.getGrids().get(0);
System.out.println("Grid name =" + firstGridInfo.getName());
GeoGrid firstGrid = (GeoGrid) dataset.getGrids().get(0);
System.out.println("WHOLE GRID");
GridCoordSystem gcs = firstGrid.getCoordinateSystem();
System.out.println("is lat/lon system ? " + gcs.isLatLon());
assert gcs.isLatLon();
LatLonRect rect = gcs.getLatLonBoundingBox();
System.out.println(
"gcs bounding box : latmin="
+ rect.getLatMin()
+ " latmax="
+ rect.getLatMax()
+ " lonmin="
+ rect.getLonMin()
+ " lonmax="
+ rect.getLonMax());
System.out.println("projection : " + gcs.getProjection());
System.out.println(
"width =" + gcs.getXHorizAxis().getSize() + ", height=" + gcs.getYHorizAxis().getSize());
System.out.println(
"X is regular ? " + ((CoordinateAxis1D) gcs.getXHorizAxis()).isRegular());
System.out.println("X is contiguous ? " + gcs.getXHorizAxis().isContiguous());
System.out.println(
"X start : " + ((CoordinateAxis1D) gcs.getXHorizAxis()).getStart());
System.out.println(
"X increment : " + ((CoordinateAxis1D) gcs.getXHorizAxis()).getIncrement());
System.out.println(
"Y is regular ? " + ((CoordinateAxis1D) gcs.getYHorizAxis()).isRegular());
System.out.println("Y is contiguous ? " + gcs.getYHorizAxis().isContiguous());
System.out.println(
"Y start : " + ((CoordinateAxis1D) gcs.getYHorizAxis()).getStart());
System.out.println(
"Y increment : " + ((CoordinateAxis1D) gcs.getYHorizAxis()).getIncrement());
LatLonPoint p = gcs.getLatLon(0, 0);
System.out.println("index (0,0) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
p = gcs.getLatLon(1, 1);
System.out.println("index (1,1) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
System.out.println("looking up lat=" + p.getLatitude() + " lon=" + p.getLongitude());
int[] xy = gcs.findXYindexFromLatLon(p.getLatitude(), p.getLongitude(), null);
System.out.println("index= (" + xy[0] + ", " + xy[1] + ")");
Assert.assertEquals(xy[0], 1);
Assert.assertEquals(xy[1], 1);
// --------------------------------------------------------------------------
double latMin = -20.D, latMax = -10.D, lonMin = 35.D, lonMax = 45.D;
System.out.println(
"\nSUBGRID (latmin="
+ latMin
+ " latmax="
+ latMax
+ " lonmin="
+ lonMin
+ " lonmax="
+ lonMax
+ ")");
LatLonRect latLonRect =
new LatLonRect(new LatLonPointImpl(latMin, lonMin), new LatLonPointImpl(latMax, lonMax));
GeoGrid gridSubset = firstGrid.subset(null, null, latLonRect, 0, 1, 1);
GridCoordSystem gcs2 = gridSubset.getCoordinateSystem();
rect = gcs2.getLatLonBoundingBox();
System.out.println("is lat/lon system ? " + gcs2.isLatLon());
System.out.println(
"gcs bounding box : latmin="
+ rect.getLatMin()
+ " latmax="
+ rect.getLatMax()
+ " lonmin="
+ rect.getLonMin()
+ " lonmax="
+ rect.getLonMax());
System.out.println("projection : " + gcs.getProjection());
System.out.println(
"width ="
+ gcs2.getXHorizAxis().getSize()
+ ", height="
+ gcs2.getYHorizAxis().getSize());
System.out.println(
"X is regular ? " + ((CoordinateAxis1D) gcs2.getXHorizAxis()).isRegular());
System.out.println("X is contiguous ? " + gcs2.getXHorizAxis().isContiguous());
System.out.println(
"X start : " + ((CoordinateAxis1D) gcs2.getXHorizAxis()).getStart());
System.out.println(
"X increment : " + ((CoordinateAxis1D) gcs2.getXHorizAxis()).getIncrement());
System.out.println(
"Y is regular ? " + ((CoordinateAxis1D) gcs2.getYHorizAxis()).isRegular());
System.out.println("Y is contiguous ? " + gcs2.getYHorizAxis().isContiguous());
System.out.println(
"Y start : " + ((CoordinateAxis1D) gcs2.getYHorizAxis()).getStart());
System.out.println(
"Y increment : " + ((CoordinateAxis1D) gcs2.getYHorizAxis()).getIncrement());
p = gcs2.getLatLon(0, 0);
System.out.println("index (0,0) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
p = gcs2.getLatLon(1, 1);
System.out.println("index (1,1) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
System.out.println("looking up lat=" + p.getLatitude() + " lon=" + p.getLongitude());
xy = gcs2.findXYindexFromLatLon(p.getLatitude(), p.getLongitude(), null);
System.out.println("index= (" + xy[0] + ", " + xy[1] + ")");
Assert.assertEquals(xy[0], 1);
Assert.assertEquals(xy[1], 1);
} catch (IOException | InvalidRangeException e) {
e.printStackTrace();
}
}