Examples of NetcdfDataset

ucar.nc2.dataset.NetcdfDataset
NetcdfDataset extends the netCDF API, adding standard attribute parsing such as scale and offset, and explicit support for Coordinate Systems. A NetcdfDataset wraps a NetcdfFile, or is defined by an NcML document.

Be sure to close the dataset when done, best practice is to enclose in a try/finally block:
```
 NetcdfDataset ncd = null; try { ncd = NetcdfDataset.openDataset(fileName); ... } finally { ncd.close(); } 
```
By default NetcdfDataset is opened with all enhancements turned on. The default "enhance mode" can be set through setDefaultEnhanceMode(). One can also explicitly set the enhancements you want in the dataset factory methods. The enhancements are:
- ScaleMissing : process scale/offset/missing attributes, and automatically convert the data.
- ScaleMissingDefer : process scale/offset/missing attributes, but dont automatically convert the data. You can call VariableEnhanced.convertScaleOffsetMissing() on the data manually.
- CoordSystem : extract CoordinateSystem using the CoordSysBuilder plug-in mechanism
- ConvertEnums : automaticlly convert enum values to their corresponding Strings. If you want to do this manually, you can call Variable.lookupEnumString() manually.
Automatic ScaleMissing processing has some overhead, and if you need maximum performance, but still want to use scale/offset/missing value handling, open the NetcdfDataset with ScaleMissingDefer. The VariableDS data type is not promoted, and the data is not converted on a read, but you can call the convertScaleOffsetMissing() routines which will do the conversion on a point-by-point basis. @author caron @see ucar.nc2.NetcdfFile

Examples of ucar.nc2.dataset.NetcdfDataset


  // Grib files are collections of 2D horizontal arrays.
  // LOOK: breaking encapsolation !!!


  private void getIosp() {
    NetcdfDataset ncd = (NetcdfDataset) gds.getNetcdfFile();
    NetcdfFile ncfile = ncd.getReferencedFile();
    while (ncfile instanceof NetcdfDataset) {
      ncd = (NetcdfDataset) ncfile;
      ncfile = ncd.getReferencedFile();
    }
    if (ncfile == null) return;
    IOServiceProvider iosp = ncfile.getIosp();
    if (iosp == null) return;
    if (!(iosp instanceof GridServiceProvider)) return;

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Examples of ucar.nc2.dataset.NetcdfDataset

    String wantName = (pos > -1) ? matchPath.substring(pos + 1) : matchPath;
    String hasName = StringUtil.replace(name, ' ', "_") + "_";


    try {
      if (wantType.equals(FILES)) {
        NetcdfDataset ncd = getNetcdfDataset(matchPath);
        return ncd == null ? null : new ucar.nc2.dt.grid.GridDataset(ncd);


      } else if (wantName.equals(hasName + FMRC) && wantDatasets.contains(FeatureCollectionConfig.FmrcDatasetType.TwoD)) {
        return fmrc.getDataset2D(null);

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Examples of ucar.nc2.dataset.NetcdfDataset

  }


  static public TrajectoryObsDataset open( String netcdfFileURI, ucar.nc2.util.CancelTask cancelTask)
          throws  IOException
  {
    NetcdfDataset ds = NetcdfDataset.acquireDataset( netcdfFileURI, cancelTask);
    if ( RafTrajectoryObsDataset.isValidFile( ds) )
      return new RafTrajectoryObsDataset( ds);
    else if ( SimpleTrajectoryObsDataset.isValidFile( ds))
      return new SimpleTrajectoryObsDataset( ds);
    else if ( Float10TrajectoryObsDataset.isValidFile( ds))

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Examples of ucar.nc2.dataset.NetcdfDataset

      DODSNetcdfFile.debugServerCall = true;
      DODSNetcdfFile.debugCE = true;
      DODSNetcdfFile.debugDataResult = true;
      DODSNetcdfFile.debugConvertData = true;


      NetcdfDataset ds = NetcdfDataset.openDataset("C:/data/ncml/oceanwatch.ncml");
      // System.out.println("ds= "+ ds.toString());


      new SequenceObsDataset(ds, null);


    }

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Examples of ucar.nc2.dataset.NetcdfDataset

    testEnhanceEquals("file:R:/testdata/2008TrainingWorkshop/tds/knmi/RAD___TEST_R_C_NL25PCP_L___20080720T000000_200807201T015500_0001_resampledto256x256.ncml");
  }


  private void testEquals(String ncmlLocation) throws  IOException {
    System.out.println("testEquals");
    NetcdfDataset ncd = NcMLReader.readNcML(ncmlLocation, null);


    String locref  = ncd.getReferencedFile().getLocation();
    NetcdfDataset ncdref = NetcdfDataset.openDataset(locref, false, null);


    CompareNetcdf.compareFiles(ncd, ncdref, false, true, false);


    ncd.close();
    ncdref.close();
  }

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Examples of ucar.nc2.dataset.NetcdfDataset

    ncdref.close();
  }


  private void testEnhanceEquals(String ncmlLocation) throws  IOException {
    System.out.println("testEnhanceEquals");
    NetcdfDataset ncml = NcMLReader.readNcML(ncmlLocation, null);
    NetcdfDataset ncmlEnhanced = new NetcdfDataset(ncml, true);


    String locref  = ncml.getReferencedFile().getLocation();
    NetcdfDataset ncdrefEnhanced = NetcdfDataset.openDataset(locref, true, null);


    CompareNetcdf.compareFiles(ncmlEnhanced, ncdrefEnhanced, false, true, false);


    ncml.close();
    ncdrefEnhanced.close();
  }

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Examples of ucar.nc2.dataset.NetcdfDataset

    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.getShortName()) == null)
          dataVars.add(vs);
      }
    }


    int count = 0;

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Examples of ucar.nc2.dataset.NetcdfDataset


    long start = System.currentTimeMillis();


    // do it in memory for speed
    NetcdfFile ncfile = inMemory ? NetcdfFile.openInMemory(fileIn) : NetcdfFile.open(fileIn);
    NetcdfDataset ncd = new NetcdfDataset(ncfile);


    StringBuilder errlog = new StringBuilder();
    PointObsDataset pobsDataset = (PointObsDataset) TypedDatasetFactory.open(FeatureType.POINT, ncd, null, errlog);


    FileOutputStream fos = new FileOutputStream(fileOut);

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Examples of ucar.nc2.dataset.NetcdfDataset


    long start = System.currentTimeMillis();


    // do it in memory for speed
    NetcdfFile ncfile = inMemory ? NetcdfFile.openInMemory(fileIn) : NetcdfFile.open(fileIn);
    NetcdfDataset ncd = new NetcdfDataset(ncfile);


    StringBuilder errlog = new StringBuilder();
    PointObsDataset pobsDataset = (PointObsDataset) TypedDatasetFactory.open(FeatureType.POINT, ncd, null, errlog);
    if (pobsDataset == null) return false;

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Examples of ucar.nc2.dataset.NetcdfDataset


    long start = System.currentTimeMillis();


    // do it in memory for speed
    NetcdfFile ncfile = inMemory ? NetcdfFile.openInMemory(fileIn) : NetcdfFile.open(fileIn);
    NetcdfDataset ncd = new NetcdfDataset(ncfile);


    Formatter errlog = new Formatter();
    FeatureDataset fd = FeatureDatasetFactoryManager.wrap(FeatureType.ANY_POINT, ncd, null, errlog);
    if (fd == null) return false;

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