Examples of NetcdfFile

ucar.nc2.NetcdfFile
Read-only scientific datasets that are accessible through the netCDF API. Immutable after setImmutable() is called. However, reading data is not thread-safe.
Be sure to close the file when done, best practice is to enclose in a try/finally block:
```
 NetcdfFile ncfile = null; try { ncfile = NetcdfFile.open(fileName); ... } finally { ncfile.close(); } 
```
Naming
Each object has a name (aka "full name") that is unique within the entire netcdf file, and a "short name" that is unique within the parent group. These coincide for objects in the root group, and so are backwards compatible with version 3 files.
1. Variable: group1/group2/varname
2. Structure member Variable: group1/group2/varname.s1.s2
3. Group Attribute: group1/group2@attName
4. Variable Attribute: group1/group2/varName@attName
@author caron

Examples of ucar.nc2.NetcdfFile

     float b_name(3);
   } ArrayOfStructures(10);
    type = Layout(8);  type= 1 (contiguous) storageSize = (10,16) dataSize=0 dataAddress=2048
   */
   public void testStructureWithArrayMember() throws IOException {
    NetcdfFile ncfile = TestH5.openH5("support/DSwith_array_member.h5");


    Variable v = ncfile.findVariable("ArrayOfStructures");
    v.setCaching(false);
    assert( null != v);
    assert( v.getDataType() == DataType.STRUCTURE);
    assert( v instanceof Structure);
    assert( v.getRank() == 1);
    assert( v.getShape()[0] == 10);


    try {
      Array data = v.read(new int[] {4}, new int[] {3});
      assert(data.getElementType() == StructureData.class);
      assert (data instanceof ArrayStructure);
      assert (data.getSize() == 3) : data.getSize();
      assert (data.getRank() == 1);


      int count = 0;
      IndexIterator iter = data.getIndexIterator();
      while (iter.hasNext()) {
        Object o = iter.next();
        assert (o instanceof StructureData);
        StructureData d = (StructureData) o;


        Array arr = d.getArray("a_name");
        assert (arr != null);
        assert (arr.getElementType() == int.class);
        assert (arr instanceof ArrayInt);
        assert (arr.getInt( arr.getIndex()) == 4 + count);
        NCdump.printArray( arr, "a_name", out, null);


        arr = d.getArray("b_name");
        assert (arr != null);
        assert (arr.getElementType() == float.class);
        assert (arr instanceof ArrayFloat);
        assert (arr.getSize() == 3);
        assert (arr.getFloat( arr.getIndex()) == (float) 4.0 + count);
        NCdump.printArray( arr, "b_name", out, null);


        count++;
      }


    }
    catch (InvalidRangeException e) { assert false; }
    catch (IOException e) { assert false; }


    try {
      Array data = v.read();
      assert(data.getElementType() == StructureData.class);
      assert (data instanceof ArrayStructure);
      assert (data.getSize() == 10);
      assert (data.getRank() == 1);


      int count = 0;
      IndexIterator iter = data.getIndexIterator();
      while (iter.hasNext()) {
        Object o = iter.next();
        assert (o instanceof StructureData);
        StructureData d = (StructureData) o;


        Array arr = d.getArray("a_name");
        assert (arr != null);
        assert (arr.getElementType() == int.class);
        assert (arr instanceof ArrayInt);
        assert (arr.getInt( arr.getIndex()) == count);
        NCdump.printArray( arr, "a_name", out, null);


        arr = d.getArray("b_name");
        assert (arr != null);
        assert (arr.getElementType() == float.class);
        assert (arr instanceof ArrayFloat);
        assert (arr.getSize() == 3);
        assert (arr.getFloat( arr.getIndex()) == (float) count);
        NCdump.printArray( arr, "b_name", out, null);


        count++;
      }


    } catch (IOException e) { assert false; }


    ncfile.close();
  } // */

View Full Code Here

Examples of ucar.nc2.NetcdfFile

    compare(filename, remote);
  }


  void compare(String file, String remote) throws IOException {
    System.out.printf("---------------------------\n");
    NetcdfFile ncfile = NetcdfDataset.openFile(file, null);
    NetcdfFile ncfileRemote = new CdmRemote(remote);


    Formatter f= new Formatter();
    CompareNetcdf2 cn = new CompareNetcdf2(f, false, false, false);
    boolean ok = cn.compare(ncfile, ncfileRemote);
    if (ok)
      System.out.printf("compare %s ok %n", file);
    else
      System.out.printf("compare %s NOT OK %n%s", file, f.toString());
    ncfile.close();
    ncfileRemote.close();
  }

View Full Code Here

Examples of ucar.nc2.NetcdfFile


  //////////////////////////////////////////////////////////////
  public static void main2(String[] args) {
    try {
      String filename = "C:/data/formats/netcdf3/testWrite.nc";
      NetcdfFile ncfile = NetcdfFile.open(filename);
      NcStreamWriter writer = new NcStreamWriter(ncfile, null);


      File file = new File("C:/temp/out.ncs");
      FileOutputStream fos = new FileOutputStream(file);
      WritableByteChannel wbc = fos.getChannel();
      writer.streamAll( wbc);
      wbc.close();


      NetcdfFile ncfileBack = NetcdfFile.open(file.getPath());


      Formatter f = new Formatter();
      CompareNetcdf2 cn = new CompareNetcdf2(f, false, false, true);
      boolean ok = cn.compare(ncfile, ncfileBack);
      if (ok)
        System.out.printf("compare %s ok %n", file);
      else
        System.out.printf("compare %s NOT OK %n%s", file, f.toString());


      ncfileBack.close();
      ncfile.close();




    } catch (Exception e) {
      e.printStackTrace();

View Full Code Here

Examples of ucar.nc2.NetcdfFile

      String remote = "http://localhost:8080/thredds/cdmremote/testCdmremote/netcdf3/testWrite.nc";
      CdmRemote ncfileRemote = new CdmRemote(remote);


      String fileOut = "C:/temp/out2.ncs";
      ncfileRemote.writeToFile(fileOut);
      NetcdfFile ncfileBack = NetcdfFile.open(fileOut);


      String filename = "C:/data/formats/netcdf3/testWrite.nc";
      NetcdfFile ncfileOrg = NetcdfFile.open(filename);


      Formatter f = new Formatter();
      CompareNetcdf2 cn = new CompareNetcdf2(f, false, false, true);
      boolean ok = cn.compare(ncfileOrg, ncfileBack);
      if (ok)
        System.out.printf("compare %s ok %n", fileOut);
      else
        System.out.printf("compare %s NOT OK %n%s", fileOut, f.toString());


      ncfileBack.close();
      ncfileOrg.close();
      ncfileRemote.close();


    } catch (Exception e) {
      e.printStackTrace();
    }

View Full Code Here

Examples of ucar.nc2.NetcdfFile


  public void testNamExtract() throws IOException, InvalidRangeException {
    String location = TestAll.cdmUnitTestDir + "ncml/nc/namExtract/test_agg.ncml";
    System.out.println(" TestOffAggExistingTimeUnitsChange.open "+ location);


    NetcdfFile ncfile = NetcdfDataset.openFile(location, null);


    Variable v = ncfile.findVariable("time");
    assert v != null;
    assert v.getDataType() == DataType.DOUBLE;


    String units = v.getUnitsString();
    assert units != null;
    assert units.equals("hours since 2006-09-25T06:00:00Z");


    int count = 0;
    Array data = v.read();
    NCdumpW.printArray(data, "time", new PrintWriter(System.out), null);
    while (data.hasNext()) {
      assert TestAll.closeEnough(data.nextInt(), (count + 1) * 3);
      count++;
    }


    ncfile.close();
  }

View Full Code Here

Examples of ucar.nc2.NetcdfFile

                    " </aggregation>\n" +
                    "</netcdf>";


    String location = "file:"+ TestAll.cdmUnitTestDir + "ncml/nc/narr/";
    System.out.println(" TestOffAggExistingTimeUnitsChange.testNarrGrib=\n"+ ncml);
    NetcdfFile ncfile = NcMLReader.readNcML(new StringReader(ncml), location, null);


    Variable v = ncfile.findVariable("time");
    assert v != null;
    assert v.getDataType() == DataType.DOUBLE;


    String units = v.getUnitsString();
    assert units != null;
    assert units.equals("hours since 2007-04-11T00:00:00Z") : units;


    int count = 0;
    Array data = v.read();
    NCdumpW.printArray(data, "time", new PrintWriter(System.out), null);
    while (data.hasNext()) {
      assert data.nextInt() == count * 3;
      count++;
    }


    ncfile.close();
  }

View Full Code Here

Examples of ucar.nc2.NetcdfFile

            infile=args[0];
        } else { System.out.println("Usage: java SigmetIOServiceProvider inputFile");
        System.exit(0);  }
        try {
            NetcdfFile.registerIOProvider(SigmetIOServiceProvider.class);
            NetcdfFile ncfile=NetcdfFile.open(infile);
            System.out.println("ncfile = \n"+ncfile);
        } catch (Exception e) { System.out.println("MAIN!!!   "+e.toString());
        e.printStackTrace(); }
    }

View Full Code Here

Examples of ucar.nc2.NetcdfFile

  public void testOneCDL() throws IOException, InterruptedException {
    testCDL("C:\\data\\netcdf4\\files\\tst_ncml.nc", true);
  }


  private void testCDL(String filename, boolean show) throws IOException, InterruptedException {
    NetcdfFile ncfile = TestNC2.open(filename);
    System.out.println("File "+filename);


    ByteArrayOutputStream bout = new ByteArrayOutputStream(30 * 1000);
    NCdump.print(ncfile, bout, false, false, false, true, null, null);
    String njCDL = bout.toString();

View Full Code Here

Examples of ucar.nc2.NetcdfFile

  }


  public void testReadCompressedInt() throws IOException {
    // actually doesnt seem to be compressed ??


    NetcdfFile ncfile = TestH5.openH5("support/zip.h5");
    Variable dset = ncfile.findVariable("Data/Compressed_Data");
    assert dset != null;
    assert(dset.getDataType() == DataType.INT);


    assert(dset.getRank() == 2);
    assert(dset.getShape()[0] == 1000);
    assert(dset.getShape()[1] == 20);


    // read entire array
    Array A = dset.read();
    assert(A.getRank() == 2);
    assert(A.getShape()[0] == 1000);
    assert(A.getShape()[1] == 20);


    int[] shape = A.getShape();
    Index ima = A.getIndex();
    for (int i = 0; i < shape[0]; i++)
      for (int j = 0; j < shape[1]; j++)
        assert(  A.getInt(ima.set(i,j)) == i+j) : i+" "+j+" "+A.getInt(ima);


    ncfile.close();
  }

View Full Code Here

Examples of ucar.nc2.NetcdfFile

  }


  public void testReadCompressedByte() throws IOException {
    // actually doesnt seem to be compressed ??


    NetcdfFile ncfile = TestH5.openH5("msg/MSG1_8bit_HRV.H5");
    Variable dset = ncfile.findVariable("image1/image_preview");
    assert dset != null;
    assert(dset.getDataType() == DataType.BYTE);


    assert(dset.getRank() == 2);
    assert(dset.getShape()[0] == 64);
    assert(dset.getShape()[1] == 96);


    // read entire array
    Array A = dset.read();
    assert(A.getRank() == 2);
    assert(A.getShape()[0] == 64);
    assert(A.getShape()[1] == 96);


    byte[] firstRow = new byte[] {
       0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
      31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
      31, 31, 31, 31, 31, 31, 31, 31, 31, 32, 32, 33, 34, 35, 36, 37, 39, 39,
      40, 42, 42, 44, 44, 57, 59, 52, 52, 53, 55, 59, 62, 63, 66, 71, 79, 81,
      83, 85, 87, 89, 90, 87, 84, 84, 87, 94, 82, 80, 76, 77, 68, 59, 57, 61,
      68, 81, 42};


    byte[] lastRow = new byte[] {
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 31, 31,
      31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
      31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
      31, 31, 30, 31, 28, 20, 11, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};


    int[] shape = A.getShape();
    Index ima = A.getIndex();
    int lrow = shape[0]-1;
    for (int j = 0; j < shape[1]; j++) {
      assert(  A.getByte(ima.set(0,j)) == firstRow[j]) : A.getByte(ima)+" should be "+firstRow[j];
      assert(  A.getByte(ima.set(lrow,j)) == lastRow[j]) : A.getByte(ima)+" should be "+lastRow[j];
    }


    ncfile.close();
  }

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.

Examples of NetcdfFile

Naming

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile

Examples of ucar.nc2.NetcdfFile