/**
* Write a ucar.nc2.ft.PointFeatureCollection in CF point format.
*
* @param pfDataset find the first PointFeatureCollection, and write all data from it
* @param fileOut write to this netcdf-3 file
* @return number of records written
* @throws IOException on read/write error, or if no PointFeatureCollection in pfDataset
*/
public static int writePointFeatureCollection(FeatureDatasetPoint pfDataset, String fileOut)
throws IOException {
// extract the PointFeatureCollection
PointFeatureCollection pointFeatureCollection = null;
List<FeatureCollection> featureCollectionList = pfDataset.getPointFeatureCollectionList();
for (FeatureCollection featureCollection : featureCollectionList) {
if (featureCollection instanceof PointFeatureCollection)
pointFeatureCollection = (PointFeatureCollection) featureCollection;
}
if (null == pointFeatureCollection)
throw new IOException("There is no PointFeatureCollection in " + pfDataset.getLocation());
long start = System.currentTimeMillis();
FileOutputStream fos = new FileOutputStream(fileOut);
DataOutputStream out = new DataOutputStream(new BufferedOutputStream(fos, 10000));
WriterCFPointDataset writer = null;
/* LOOK BAD
List<VariableSimpleIF> dataVars = new ArrayList<VariableSimpleIF>();
ucar.nc2.NetcdfFile ncfile = pfDataset.getNetcdfFile();
if ((ncfile == null) || !(ncfile instanceof NetcdfDataset)) {
dataVars.addAll(pfDataset.getDataVariables());
} else {
NetcdfDataset ncd = (NetcdfDataset) ncfile;
for (VariableSimpleIF vs : pfDataset.getDataVariables()) {
if (ncd.findCoordinateAxis(vs.getName()) == null)
dataVars.add(vs);
}
} */
int count = 0;
pointFeatureCollection.resetIteration();
while (pointFeatureCollection.hasNext()) {
PointFeature pointFeature = (PointFeature) pointFeatureCollection.next();
StructureData data = pointFeature.getData();
if (count == 0) {
EarthLocation loc =
pointFeature.getLocation(); // LOOK we dont know this until we see the obs
String altUnits =
Double.isNaN(loc.getAltitude()) ? null : "meters"; // LOOK units may be wrong
writer = new WriterCFPointDataset(out, pfDataset.getGlobalAttributes(), altUnits);
writer.writeHeader(pfDataset.getDataVariables(), -1);
}
writer.writeRecord(pointFeature, data);
count++;
}
writer.finish();
out.flush();
out.close();
long took = System.currentTimeMillis() - start;
System.out.printf(
"Write %d records from %s to %s took %d msecs %n",
count, pfDataset.getLocation(), fileOut, took);
return count;
}
private boolean filter(PointFeature pdata) {
if ((filter_date != null) && !filter_date.included(pdata.getObservationTimeAsDate()))
return false;
if ((filter_bb != null)
&& !filter_bb.contains(
pdata.getLocation().getLatitude(), pdata.getLocation().getLongitude())) return false;
return true;
}
public void writeObsData(PointFeature pf) throws IOException {
StructureDataScalar coords = new StructureDataScalar("Coords");
if (useAlt)
coords.addMember(
altitudeCoordinateName,
null,
null,
DataType.DOUBLE,
false,
pf.getLocation().getAltitude());
StructureDataComposite sdall = new StructureDataComposite();
sdall.add(coords); // coords first so it takes precedence
sdall.add(pf.getFeatureData());
obsRecno = super.writeStructureData(obsRecno, record, sdall, dataMap);
}
private void writeHeader(ProfileFeature profile, PointFeature obs) throws IOException {
Formatter coordNames = new Formatter().format("%s %s %s", profileTimeName, latName, lonName);
List<VariableSimpleIF> coords = new ArrayList<>();
if (useAlt) {
coords.add(
VariableSimpleImpl.makeScalar(
altitudeCoordinateName, "obs altitude", altUnits, DataType.DOUBLE)
.add(new Attribute(CF.STANDARD_NAME, "altitude"))
.add(
new Attribute(
CF.POSITIVE,
CF1Convention.getZisPositive(altitudeCoordinateName, altUnits))));
coordNames.format(" %s", altitudeCoordinateName);
}
super.writeHeader(
coords, profile.getFeatureData(), obs.getFeatureData(), coordNames.toString());
}
