private void makeVariableNoCoords(
NetcdfFile ncfile, int datatype, String shortName, String longName, Variable from) {
Variable v = new Variable(ncfile, null, null, shortName);
v.setDataType(DataType.BYTE);
v.setDimensions(from.getDimensions());
ncfile.addVariable(null, v);
v.addAttribute(new Attribute(CDM.UNITS, Cinrad2Record.getDatatypeUnits(datatype)));
v.addAttribute(new Attribute(CDM.LONG_NAME, longName));
byte[] b = new byte[2];
b[0] = Cinrad2Record.MISSING_DATA;
b[1] = Cinrad2Record.BELOW_THRESHOLD;
Array missingArray = Array.factory(DataType.BYTE.getPrimitiveClassType(), new int[] {2}, b);
v.addAttribute(new Attribute(CDM.MISSING_VALUE, missingArray));
v.addAttribute(
new Attribute("signal_below_threshold", new Byte(Cinrad2Record.BELOW_THRESHOLD)));
v.addAttribute(
new Attribute(CDM.SCALE_FACTOR, new Float(Cinrad2Record.getDatatypeScaleFactor(datatype))));
v.addAttribute(
new Attribute(CDM.ADD_OFFSET, new Float(Cinrad2Record.getDatatypeAddOffset(datatype))));
v.addAttribute(new Attribute(CDM.UNSIGNED, "true"));
Attribute fromAtt = from.findAttribute(_Coordinate.Axes);
v.addAttribute(new Attribute(_Coordinate.Axes, fromAtt));
Vgroup vgFrom = (Vgroup) from.getSPobject();
Vgroup vg = new Vgroup(datatype, vgFrom.map);
v.setSPobject(vg);
}
// convert to shared dimensions
private void setSharedDimensions(
Variable v, List<Element> values, List<Dimension> unknownDims, String location) {
if (values.size() == 0) return;
// remove the "scalar" dumbension
Iterator<Element> iter = values.iterator();
while (iter.hasNext()) {
Element value = iter.next();
String dimName = value.getText().trim();
if (dimName.equalsIgnoreCase("scalar")) iter.remove();
}
// gotta have same number of dimensions
List<Dimension> oldDims = v.getDimensions();
if (oldDims.size() != values.size()) {
log.error("Different number of dimensions for {} {}", v, location);
return;
}
List<Dimension> newDims = new ArrayList<>();
Group group = v.getParentGroup();
for (int i = 0; i < values.size(); i++) {
Element value = values.get(i);
String dimName = value.getText().trim();
dimName = NetcdfFile.makeValidCdmObjectName(dimName);
Dimension dim = group.findDimension(dimName);
Dimension oldDim = oldDims.get(i);
if (dim == null) dim = checkUnknownDims(dimName, unknownDims, oldDim, location);
if (dim == null) {
log.error(
"Unknown Dimension= {} for variable = {} {} ", dimName, v.getFullName(), location);
return;
}
if (dim.getLength() != oldDim.getLength()) {
log.error(
"Shared dimension ("
+ dim.getShortName()
+ ") has different length than data dimension ("
+ oldDim.getShortName()
+ ") shared="
+ dim.getLength()
+ " org="
+ oldDim.getLength()
+ " for "
+ v
+ " "
+ location);
return;
}
newDims.add(dim);
}
v.setDimensions(newDims);
if (showWork) System.out.printf(" set shared dimensions for %s %n", v.getNameAndDimensions());
}
/**
* Amend the given NetcdfFile with metadata from HDF-EOS structMetadata. All Variables named
* StructMetadata.n, where n= 1, 2, 3 ... are read in and their contents concatenated to make the
* structMetadata String.
*
* @param ncfile Amend this file
* @param eosGroup the group containing variables named StructMetadata.*
* @throws IOException on read error
* @return true if HDF-EOS info was found
*/
public static boolean amendFromODL(NetcdfFile ncfile, Group eosGroup) throws IOException {
String smeta = getStructMetadata(eosGroup);
if (smeta == null) return false;
HdfEos fixer = new HdfEos();
fixer.fixAttributes(ncfile.getRootGroup());
fixer.amendFromODL(ncfile, smeta);
return true;
}
private FeatureType amendGrid(
Element gridElem, NetcdfFile ncfile, Group parent, String location) {
List<Dimension> unknownDims = new ArrayList<>();
// always has x and y dimension
String xdimSizeS = gridElem.getChild("XDim").getText().trim();
String ydimSizeS = gridElem.getChild("YDim").getText().trim();
int xdimSize = Integer.parseInt(xdimSizeS);
int ydimSize = Integer.parseInt(ydimSizeS);
parent.addDimensionIfNotExists(new Dimension("XDim", xdimSize));
parent.addDimensionIfNotExists(new Dimension("YDim", ydimSize));
/* see HdfEosModisConvention
UpperLeftPointMtrs=(-20015109.354000,1111950.519667)
LowerRightMtrs=(-18903158.834333,-0.000000)
Projection=GCTP_SNSOID
ProjParams=(6371007.181000,0,0,0,0,0,0,0,0,0,0,0,0)
SphereCode=-1
*/
Element proj = gridElem.getChild("Projection");
if (proj != null) {
Variable crs = new Variable(ncfile, parent, null, HDFEOS_CRS);
crs.setDataType(DataType.SHORT);
crs.setDimensions(""); // scalar
crs.setCachedData(Array.makeArray(DataType.SHORT, 1, 0, 0)); // fake data
parent.addVariable(crs);
addAttributeIfExists(gridElem, HDFEOS_CRS_Projection, crs, false);
addAttributeIfExists(gridElem, HDFEOS_CRS_UpperLeft, crs, true);
addAttributeIfExists(gridElem, HDFEOS_CRS_LowerRight, crs, true);
addAttributeIfExists(gridElem, HDFEOS_CRS_ProjParams, crs, true);
addAttributeIfExists(gridElem, HDFEOS_CRS_SphereCode, crs, false);
}
// global Dimensions
Element d = gridElem.getChild("Dimension");
List<Element> dims = d.getChildren();
for (Element elem : dims) {
String name = elem.getChild("DimensionName").getText().trim();
name = NetcdfFile.makeValidCdmObjectName(name);
if (name.equalsIgnoreCase("scalar")) continue;
String sizeS = elem.getChild("Size").getText().trim();
int length = Integer.parseInt(sizeS);
Dimension old = parent.findDimension(name);
if ((old == null) || (old.getLength() != length)) {
if (length > 0) {
Dimension dim = new Dimension(name, length);
if (parent.addDimensionIfNotExists(dim) && showWork)
System.out.printf(" Add dimension %s %n", dim);
} else {
log.warn("Dimension {} has size {} {} ", sizeS, name, location);
Dimension udim = new Dimension(name, 1);
udim.setGroup(parent);
unknownDims.add(udim);
if (showWork) System.out.printf(" Add dimension %s %n", udim);
}
}
}
// Geolocation Variables
Group geoFieldsG = parent.findGroup(GEOLOC_FIELDS);
if (geoFieldsG == null) geoFieldsG = parent.findGroup(GEOLOC_FIELDS2);
if (geoFieldsG != null) {
Element floc = gridElem.getChild("GeoField");
List<Element> varsLoc = floc.getChildren();
for (Element elem : varsLoc) {
String varname = elem.getChild("GeoFieldName").getText().trim();
Variable v = geoFieldsG.findVariable(varname);
// if (v == null)
// v = geoFieldsG.findVariable( H4header.createValidObjectName(varname));
assert v != null : varname;
Element dimList = elem.getChild("DimList");
List<Element> values = dimList.getChildren("value");
setSharedDimensions(v, values, unknownDims, location);
}
}
// Data Variables
Group dataG = parent.findGroup(DATA_FIELDS);
if (dataG == null)
dataG =
parent.findGroup(
DATA_FIELDS2); // eg C:\data\formats\hdf4\eos\mopitt\MOP03M-200501-L3V81.0.1.hdf
if (dataG != null) {
Element f = gridElem.getChild("DataField");
List<Element> vars = f.getChildren();
for (Element elem : vars) {
String varname = elem.getChild("DataFieldName").getText().trim();
varname = NetcdfFile.makeValidCdmObjectName(varname);
Variable v = dataG.findVariable(varname);
// if (v == null)
// v = dataG.findVariable( H4header.createValidObjectName(varname));
assert v != null : varname;
Element dimList = elem.getChild("DimList");
List<Element> values = dimList.getChildren("value");
setSharedDimensions(v, values, unknownDims, location);
}
// get projection
String projS = null;
Element projElem = gridElem.getChild("Projection");
if (projElem != null) projS = projElem.getText().trim();
boolean isLatLon = "GCTP_GEO".equals(projS);
// look for XDim, YDim coordinate variables
if (isLatLon) {
for (Variable v : dataG.getVariables()) {
if (v.isCoordinateVariable()) {
if (v.getShortName().equals("YDim")) {
v.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Lat.toString()));
v.addAttribute(new Attribute(CDM.UNITS, CDM.LAT_UNITS));
}
if (v.getShortName().equals("XDim"))
v.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Lon.toString()));
}
}
}
}
return FeatureType.GRID;
}
private FeatureType amendSwath(NetcdfFile ncfile, Element swathElem, Group parent) {
FeatureType featureType = FeatureType.SWATH;
List<Dimension> unknownDims = new ArrayList<>();
// Dimensions
Element d = swathElem.getChild("Dimension");
List<Element> dims = d.getChildren();
for (Element elem : dims) {
String name = elem.getChild("DimensionName").getText().trim();
name = NetcdfFile.makeValidCdmObjectName(name);
if (name.equalsIgnoreCase("scalar")) continue;
String sizeS = elem.getChild("Size").getText().trim();
int length = Integer.parseInt(sizeS);
if (length > 0) {
Dimension dim = parent.findDimensionLocal(name);
if (dim != null) { // already added - may be dimension scale ?
if (dim.getLength() != length) { // ok as long as it matches
log.error("Conflicting Dimensions = {} {}", dim, ncfile.getLocation());
throw new IllegalStateException("Conflicting Dimensions = " + name);
}
} else {
dim = new Dimension(name, length);
if (parent.addDimensionIfNotExists(dim) && showWork)
System.out.printf(" Add dimension %s %n", dim);
}
} else {
log.warn("Dimension " + name + " has size " + sizeS, ncfile.getLocation());
Dimension udim = new Dimension(name, 1);
udim.setGroup(parent);
unknownDims.add(udim);
if (showWork) System.out.printf(" Add dimension %s %n", udim);
}
}
// Dimension Maps
Element dmap = swathElem.getChild("DimensionMap");
List<Element> dimMaps = dmap.getChildren();
for (Element elem : dimMaps) {
String geoDimName = elem.getChild("GeoDimension").getText().trim();
geoDimName = NetcdfFile.makeValidCdmObjectName(geoDimName);
String dataDimName = elem.getChild("DataDimension").getText().trim();
dataDimName = NetcdfFile.makeValidCdmObjectName(dataDimName);
String offsetS = elem.getChild("Offset").getText().trim();
String incrS = elem.getChild("Increment").getText().trim();
int offset = Integer.parseInt(offsetS);
int incr = Integer.parseInt(incrS);
// make new variable for this dimension map
Variable v = new Variable(ncfile, parent, null, dataDimName);
v.setDimensions(geoDimName);
v.setDataType(DataType.INT);
int npts = (int) v.getSize();
Array data = Array.makeArray(v.getDataType(), npts, offset, incr);
v.setCachedData(data, true);
v.addAttribute(new Attribute("_DimensionMap", ""));
parent.addVariable(v);
if (showWork) System.out.printf(" Add dimensionMap %s %n", v);
}
// Geolocation Variables
Group geoFieldsG = parent.findGroup(GEOLOC_FIELDS);
if (geoFieldsG == null) geoFieldsG = parent.findGroup(GEOLOC_FIELDS2);
if (geoFieldsG != null) {
Variable latAxis = null, lonAxis = null;
Element floc = swathElem.getChild("GeoField");
List<Element> varsLoc = floc.getChildren();
for (Element elem : varsLoc) {
String varname = elem.getChild("GeoFieldName").getText().trim();
Variable v = geoFieldsG.findVariable(varname);
// if (v == null)
// v = geoFieldsG.findVariable( H4header.createValidObjectName(varname));
assert v != null : varname;
AxisType axis = addAxisType(ncfile, v);
if (axis == AxisType.Lat) latAxis = v;
if (axis == AxisType.Lon) lonAxis = v;
Element dimList = elem.getChild("DimList");
List<Element> values = dimList.getChildren("value");
setSharedDimensions(v, values, unknownDims, ncfile.getLocation());
if (showWork) System.out.printf(" set coordinate %s %n", v);
}
if ((latAxis != null) && (lonAxis != null)) {
List<Dimension> xyDomain = CoordinateSystem.makeDomain(new Variable[] {latAxis, lonAxis});
if (xyDomain.size() < 2) featureType = FeatureType.PROFILE; // ??
}
}
// Data Variables
Group dataG = parent.findGroup(DATA_FIELDS);
if (dataG == null) dataG = parent.findGroup(DATA_FIELDS2);
if (dataG != null) {
Element f = swathElem.getChild("DataField");
List<Element> vars = f.getChildren();
for (Element elem : vars) {
Element dataFieldNameElem = elem.getChild("DataFieldName");
if (dataFieldNameElem == null) continue;
String varname = NetcdfFile.makeValidCdmObjectName(dataFieldNameElem.getText().trim());
Variable v = dataG.findVariable(varname);
// if (v == null)
// v = dataG.findVariable( H4header.createValidObjectName(varname));
if (v == null) {
log.error("Cant find variable {} {}", varname, ncfile.getLocation());
continue;
}
Element dimList = elem.getChild("DimList");
List<Element> values = dimList.getChildren("value");
setSharedDimensions(v, values, unknownDims, ncfile.getLocation());
}
}
return featureType;
}
/**
* Amend the given NetcdfFile with metadata from HDF-EOS structMetadata
*
* @param ncfile Amend this file
* @param structMetadata structMetadata as String
* @throws IOException on read error
*/
private void amendFromODL(NetcdfFile ncfile, String structMetadata) throws IOException {
Group rootg = ncfile.getRootGroup();
ODLparser parser = new ODLparser();
Element root = parser.parseFromString(structMetadata); // now we have the ODL in JDOM elements
FeatureType featureType = null;
// SWATH
Element swathStructure = root.getChild("SwathStructure");
if (swathStructure != null) {
List<Element> swaths = swathStructure.getChildren();
for (Element elemSwath : swaths) {
Element swathNameElem = elemSwath.getChild("SwathName");
if (swathNameElem == null) {
log.warn("No SwathName element in {} {} ", elemSwath.getName(), ncfile.getLocation());
continue;
}
String swathName = NetcdfFile.makeValidCdmObjectName(swathNameElem.getText().trim());
Group swathGroup = findGroupNested(rootg, swathName);
// if (swathGroup == null)
// swathGroup = findGroupNested(rootg, H4header.createValidObjectName(swathName));
if (swathGroup != null) {
featureType = amendSwath(ncfile, elemSwath, swathGroup);
} else {
log.warn("Cant find swath group {} {}", swathName, ncfile.getLocation());
}
}
}
// GRID
Element gridStructure = root.getChild("GridStructure");
if (gridStructure != null) {
List<Element> grids = gridStructure.getChildren();
for (Element elemGrid : grids) {
Element gridNameElem = elemGrid.getChild("GridName");
if (gridNameElem == null) {
log.warn("No GridName element in {} {} ", elemGrid.getName(), ncfile.getLocation());
continue;
}
String gridName = NetcdfFile.makeValidCdmObjectName(gridNameElem.getText().trim());
Group gridGroup = findGroupNested(rootg, gridName);
// if (gridGroup == null)
// gridGroup = findGroupNested(rootg, H4header.createValidObjectName(gridName));
if (gridGroup != null) {
featureType = amendGrid(elemGrid, ncfile, gridGroup, ncfile.getLocation());
} else {
log.warn("Cant find Grid group {} {}", gridName, ncfile.getLocation());
}
}
}
// POINT - NOT DONE YET
Element pointStructure = root.getChild("PointStructure");
if (pointStructure != null) {
List<Element> pts = pointStructure.getChildren();
for (Element elem : pts) {
Element nameElem = elem.getChild("PointName");
if (nameElem == null) {
log.warn("No PointName element in {} {}", elem.getName(), ncfile.getLocation());
continue;
}
String name = nameElem.getText().trim();
Group ptGroup = findGroupNested(rootg, name);
// if (ptGroup == null)
// ptGroup = findGroupNested(rootg, H4header.createValidObjectName(name));
if (ptGroup != null) {
featureType = FeatureType.POINT;
} else {
log.warn("Cant find Point group {} {}", name, ncfile.getLocation());
}
}
}
if (featureType != null) {
if (showWork) System.out.println("***EOS featureType= " + featureType.toString());
rootg.addAttribute(new Attribute(CF.FEATURE_TYPE, featureType.toString()));
// rootg.addAttribute(new Attribute(CDM.CONVENTIONS, "HDFEOS"));
}
}
public Variable makeVariable(
NetcdfFile ncfile,
int datatype,
String shortName,
String longName,
String abbrev,
List groups)
throws IOException {
int nscans = groups.size();
if (nscans == 0) {
throw new IllegalStateException("No data for " + shortName);
}
// get representative record
List firstGroup = (List) groups.get(0);
Cinrad2Record firstRecord = (Cinrad2Record) firstGroup.get(0);
int ngates = firstRecord.getGateCount(datatype);
String scanDimName = "scan" + abbrev;
String gateDimName = "gate" + abbrev;
Dimension scanDim = new Dimension(scanDimName, nscans);
Dimension gateDim = new Dimension(gateDimName, ngates);
ncfile.addDimension(null, scanDim);
ncfile.addDimension(null, gateDim);
ArrayList dims = new ArrayList();
dims.add(scanDim);
dims.add(radialDim);
dims.add(gateDim);
Variable v = new Variable(ncfile, null, null, shortName);
v.setDataType(DataType.BYTE);
v.setDimensions(dims);
ncfile.addVariable(null, v);
v.addAttribute(new Attribute(CDM.UNITS, Cinrad2Record.getDatatypeUnits(datatype)));
v.addAttribute(new Attribute(CDM.LONG_NAME, longName));
byte[] b = new byte[2];
b[0] = Cinrad2Record.MISSING_DATA;
b[1] = Cinrad2Record.BELOW_THRESHOLD;
Array missingArray = Array.factory(DataType.BYTE.getPrimitiveClassType(), new int[] {2}, b);
v.addAttribute(new Attribute(CDM.MISSING_VALUE, missingArray));
v.addAttribute(
new Attribute("signal_below_threshold", new Byte(Cinrad2Record.BELOW_THRESHOLD)));
v.addAttribute(
new Attribute(CDM.SCALE_FACTOR, new Float(Cinrad2Record.getDatatypeScaleFactor(datatype))));
v.addAttribute(
new Attribute(CDM.ADD_OFFSET, new Float(Cinrad2Record.getDatatypeAddOffset(datatype))));
v.addAttribute(new Attribute(CDM.UNSIGNED, "true"));
ArrayList dim2 = new ArrayList();
dim2.add(scanDim);
dim2.add(radialDim);
// add time coordinate variable
String timeCoordName = "time" + abbrev;
Variable timeVar = new Variable(ncfile, null, null, timeCoordName);
timeVar.setDataType(DataType.INT);
timeVar.setDimensions(dim2);
ncfile.addVariable(null, timeVar);
// int julianDays = volScan.getTitleJulianDays();
// Date d = Cinrad2Record.getDate( julianDays, 0);
// Date d = Cinrad2Record.getDate(volScan.getTitleJulianDays(), volScan.getTitleMsecs());
Date d = volScan.getStartDate();
String units = "msecs since " + formatter.toDateTimeStringISO(d);
timeVar.addAttribute(new Attribute(CDM.LONG_NAME, "time since base date"));
timeVar.addAttribute(new Attribute(CDM.UNITS, units));
timeVar.addAttribute(new Attribute(CDM.MISSING_VALUE, new Integer(MISSING_INT)));
timeVar.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Time.toString()));
// add elevation coordinate variable
String elevCoordName = "elevation" + abbrev;
Variable elevVar = new Variable(ncfile, null, null, elevCoordName);
elevVar.setDataType(DataType.FLOAT);
elevVar.setDimensions(dim2);
ncfile.addVariable(null, elevVar);
elevVar.addAttribute(new Attribute(CDM.UNITS, "degrees"));
elevVar.addAttribute(
new Attribute(
CDM.LONG_NAME,
"elevation angle in degres: 0 = parallel to pedestal base, 90 = perpendicular"));
elevVar.addAttribute(new Attribute(CDM.MISSING_VALUE, new Float(MISSING_FLOAT)));
elevVar.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.RadialElevation.toString()));
// add azimuth coordinate variable
String aziCoordName = "azimuth" + abbrev;
Variable aziVar = new Variable(ncfile, null, null, aziCoordName);
aziVar.setDataType(DataType.FLOAT);
aziVar.setDimensions(dim2);
ncfile.addVariable(null, aziVar);
aziVar.addAttribute(new Attribute(CDM.UNITS, "degrees"));
aziVar.addAttribute(
new Attribute(CDM.LONG_NAME, "azimuth angle in degrees: 0 = true north, 90 = east"));
aziVar.addAttribute(new Attribute(CDM.MISSING_VALUE, new Float(MISSING_FLOAT)));
aziVar.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.RadialAzimuth.toString()));
// add gate coordinate variable
String gateCoordName = "distance" + abbrev;
Variable gateVar = new Variable(ncfile, null, null, gateCoordName);
gateVar.setDataType(DataType.FLOAT);
gateVar.setDimensions(gateDimName);
Array data =
Array.makeArray(
DataType.FLOAT,
ngates,
(double) firstRecord.getGateStart(datatype),
(double) firstRecord.getGateSize(datatype));
gateVar.setCachedData(data, false);
ncfile.addVariable(null, gateVar);
radarRadius = firstRecord.getGateStart(datatype) + ngates * firstRecord.getGateSize(datatype);
gateVar.addAttribute(new Attribute(CDM.UNITS, "m"));
gateVar.addAttribute(new Attribute(CDM.LONG_NAME, "radial distance to start of gate"));
gateVar.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.RadialDistance.toString()));
// add number of radials variable
String nradialsName = "numRadials" + abbrev;
Variable nradialsVar = new Variable(ncfile, null, null, nradialsName);
nradialsVar.setDataType(DataType.INT);
nradialsVar.setDimensions(scanDim.getName());
nradialsVar.addAttribute(new Attribute(CDM.LONG_NAME, "number of valid radials in this scan"));
ncfile.addVariable(null, nradialsVar);
// add number of gates variable
String ngateName = "numGates" + abbrev;
Variable ngateVar = new Variable(ncfile, null, null, ngateName);
ngateVar.setDataType(DataType.INT);
ngateVar.setDimensions(scanDim.getName());
ngateVar.addAttribute(new Attribute(CDM.LONG_NAME, "number of valid gates in this scan"));
ncfile.addVariable(null, ngateVar);
makeCoordinateDataWithMissing(
datatype, timeVar, elevVar, aziVar, nradialsVar, ngateVar, groups);
// back to the data variable
String coordinates =
timeCoordName + " " + elevCoordName + " " + aziCoordName + " " + gateCoordName;
v.addAttribute(new Attribute(_Coordinate.Axes, coordinates));
// make the record map
int nradials = radialDim.getLength();
Cinrad2Record[][] map = new Cinrad2Record[nscans][nradials];
for (int i = 0; i < groups.size(); i++) {
Cinrad2Record[] mapScan = map[i];
List group = (List) groups.get(i);
for (int j = 0; j < group.size(); j++) {
Cinrad2Record r = (Cinrad2Record) group.get(j);
int radial = r.radial_num - 1;
mapScan[radial] = r;
}
}
Vgroup vg = new Vgroup(datatype, map);
v.setSPobject(vg);
return v;
}
public void open(RandomAccessFile raf, NetcdfFile ncfile, CancelTask cancelTask)
throws IOException {
NexradStationDB.init();
volScan = new Cinrad2VolumeScan(raf, cancelTask);
if (volScan.hasDifferentDopplarResolutions())
throw new IllegalStateException("volScan.hasDifferentDopplarResolutions");
radialDim = new Dimension("radial", volScan.getMaxRadials());
ncfile.addDimension(null, radialDim);
makeVariable(
ncfile,
Cinrad2Record.REFLECTIVITY,
"Reflectivity",
"Reflectivity",
"R",
volScan.getReflectivityGroups());
int velocity_type =
(volScan.getDopplarResolution() == Cinrad2Record.DOPPLER_RESOLUTION_HIGH_CODE)
? Cinrad2Record.VELOCITY_HI
: Cinrad2Record.VELOCITY_LOW;
Variable v =
makeVariable(
ncfile,
velocity_type,
"RadialVelocity",
"Radial Velocity",
"V",
volScan.getVelocityGroups());
makeVariableNoCoords(
ncfile, Cinrad2Record.SPECTRUM_WIDTH, "SpectrumWidth", "Spectrum Width", v);
if (volScan.getStationId() != null) {
ncfile.addAttribute(null, new Attribute("Station", volScan.getStationId()));
ncfile.addAttribute(null, new Attribute("StationName", volScan.getStationName()));
ncfile.addAttribute(
null, new Attribute("StationLatitude", new Double(volScan.getStationLatitude())));
ncfile.addAttribute(
null, new Attribute("StationLongitude", new Double(volScan.getStationLongitude())));
ncfile.addAttribute(
null,
new Attribute("StationElevationInMeters", new Double(volScan.getStationElevation())));
double latRadiusDegrees = Math.toDegrees(radarRadius / ucar.unidata.geoloc.Earth.getRadius());
ncfile.addAttribute(
null,
new Attribute(
"geospatial_lat_min", new Double(volScan.getStationLatitude() - latRadiusDegrees)));
ncfile.addAttribute(
null,
new Attribute(
"geospatial_lat_max", new Double(volScan.getStationLatitude() + latRadiusDegrees)));
double cosLat = Math.cos(Math.toRadians(volScan.getStationLatitude()));
double lonRadiusDegrees =
Math.toDegrees(radarRadius / cosLat / ucar.unidata.geoloc.Earth.getRadius());
ncfile.addAttribute(
null,
new Attribute(
"geospatial_lon_min", new Double(volScan.getStationLongitude() - lonRadiusDegrees)));
ncfile.addAttribute(
null,
new Attribute(
"geospatial_lon_max", new Double(volScan.getStationLongitude() + lonRadiusDegrees)));
// add a radial coordinate transform (experimental)
Variable ct = new Variable(ncfile, null, null, "radialCoordinateTransform");
ct.setDataType(DataType.CHAR);
ct.setDimensions(""); // scalar
ct.addAttribute(new Attribute("transform_name", "Radial"));
ct.addAttribute(new Attribute("center_latitude", new Double(volScan.getStationLatitude())));
ct.addAttribute(new Attribute("center_longitude", new Double(volScan.getStationLongitude())));
ct.addAttribute(new Attribute("center_elevation", new Double(volScan.getStationElevation())));
ct.addAttribute(new Attribute(_Coordinate.TransformType, "Radial"));
ct.addAttribute(
new Attribute(_Coordinate.AxisTypes, "RadialElevation RadialAzimuth RadialDistance"));
Array data =
Array.factory(DataType.CHAR.getPrimitiveClassType(), new int[0], new char[] {' '});
ct.setCachedData(data, true);
ncfile.addVariable(null, ct);
}
DateFormatter formatter = new DateFormatter();
ncfile.addAttribute(null, new Attribute(CDM.CONVENTIONS, _Coordinate.Convention));
ncfile.addAttribute(null, new Attribute("format", volScan.getDataFormat()));
ncfile.addAttribute(null, new Attribute(CF.FEATURE_TYPE, FeatureType.RADIAL.toString()));
// Date d = Cinrad2Record.getDate(volScan.getTitleJulianDays(), volScan.getTitleMsecs());
// ncfile.addAttribute(null, new Attribute("base_date", formatter.toDateOnlyString(d)));
ncfile.addAttribute(
null,
new Attribute(
"time_coverage_start", formatter.toDateTimeStringISO(volScan.getStartDate())));
; // .toDateTimeStringISO(d)));
ncfile.addAttribute(
null,
new Attribute("time_coverage_end", formatter.toDateTimeStringISO(volScan.getEndDate())));
ncfile.addAttribute(
null,
new Attribute(CDM.HISTORY, "Direct read of Nexrad Level 2 file into NetCDF-Java 2.2 API"));
ncfile.addAttribute(null, new Attribute("DataType", "Radial"));
ncfile.addAttribute(
null,
new Attribute(
"Title",
"Nexrad Level 2 Station "
+ volScan.getStationId()
+ " from "
+ formatter.toDateTimeStringISO(volScan.getStartDate())
+ " to "
+ formatter.toDateTimeStringISO(volScan.getEndDate())));
ncfile.addAttribute(
null,
new Attribute(
"Summary",
"Weather Surveillance Radar-1988 Doppler (WSR-88D) "
+ "Level II data are the three meteorological base data quantities: reflectivity, mean radial velocity, and "
+ "spectrum width."));
ncfile.addAttribute(
null,
new Attribute(
"keywords",
"WSR-88D; NEXRAD; Radar Level II; reflectivity; mean radial velocity; spectrum width"));
ncfile.addAttribute(
null,
new Attribute(
"VolumeCoveragePatternName",
Cinrad2Record.getVolumeCoveragePatternName(volScan.getVCP())));
ncfile.addAttribute(
null, new Attribute("VolumeCoveragePattern", new Integer(volScan.getVCP())));
ncfile.addAttribute(
null,
new Attribute(
"HorizonatalBeamWidthInDegrees", new Double(Cinrad2Record.HORIZONTAL_BEAM_WIDTH)));
ncfile.finish();
}