Package a.b.m2

Examples of a.b.m2.Section

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  static int max_size = 1000 * 1000 * 10;
  static Section makeSubset(Variable v) throws InvalidRangeException {
    int[] shape = v.getShape();
    shape[0] = 1;
    Section s = new Section(shape);
    long size = s.computeSize();
    shape[0] = (int) Math.max(1, max_size / size);
    return new Section(shape);
  }
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    if (null == axis) throw new IllegalArgumentException("There is no GeoZ coordinate");
    return readValue( axis, fromVar, index);
  }

  public double readValue(Variable targetVar, Variable fromVar, int[] index) throws InvalidRangeException, IOException {
    Section axisElement = mapIndex( targetVar, fromVar, index);
    Array result = targetVar.read(axisElement);
    return result.nextDouble();
  }
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  }

  public Section mapIndex(Variable targetVar, Variable fromVar, int[] fromIndex) throws InvalidRangeException {
    List<Dimension> toDims = targetVar.getDimensions();
    List<Dimension> fromDims = fromVar.getDimensions();
    Section result = new Section();

    // each dimension in the target must be present in the source
    for (int i=0; i<toDims.size(); i++) {
      Dimension dim = toDims.get(i);
      int varIndex = fromDims.indexOf(toDims.get(i));
      if (varIndex < 0) throw new IllegalArgumentException("Dimension "+dim+" does not exist");
      result.appendRange(fromIndex[varIndex], fromIndex[varIndex]);
    }
    return result;
  }
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    Variable v2 = ncfile.findVariable("Opaque");
    assert v2 != null;

    Array data = v2.read();
    assert data.getElementType() == ByteBuffer.class : data.getElementType();
    System.out.println( "data size= "+new Section(data.getShape()));
    NCdump.printArray(data, "Opaque data", System.out, null);


    Array odata = v2.read(new Section("1:20"));
    assert odata.getElementType() == ByteBuffer.class;
    assert odata.getSize() == 20;
    ncfile.close();
  }
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    // try subset
    data = v.read("0:9:2, :");
    NCdumpW.printArray(data, "read(0:9:2,:)",  new PrintWriter( System.out), null);

    data = v.read(new Section().appendRange(0,9,2).appendRange(null));
    NCdumpW.printArray(data, "read(Section)",  new PrintWriter( System.out), null);

    // fail
    //int[] origin = new int[] {0, 0};
    //int[] size = new int[] {3, -1};
    //data = v.read(origin, size);

    // from bruno
    int initialIndex = 5;
    int finalIndex = 5;
    data = v.read(initialIndex + ":" + finalIndex + ",:");
    //NCdumpW.printArray(data, "read()",  new PrintWriter(System.out), null);

    System.out.println("Size: " + data.getSize());
    System.out.println("Data: " + data);
    System.out.println("Class: " + data.getClass().getName());
    // loop over outer dimension

    int x = 0;
    while (data.hasNext()) {
      Array as = (Array) data.next(); // inner variable length array of short
      System.out.println("Shape: " + new Section(as.getShape()));
      System.out.println(as);
    }


    ncfile.close();
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        ncfile = iosp.open(filename);
        if (showFile) System.out.println("\n"+ncfile.toString());

        for (Variable v : ncfile.getVariables()) {
          if (v.getSize() > max_size) {
            Section s = makeSubset(v);
            if (showDetail)
              System.out.println("  Try to read variable " + v.getNameAndDimensions() + " size= " + v.getSize() + " section= " + s);
            v.read(s);
          } else {
            if (showDetail)
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    int max_size = 1000 * 1000 * 10;

    Section makeSubset(Variable v) throws InvalidRangeException {
      int[] shape = v.getShape();
      shape[0] = 1;
      Section s = new Section(shape);
      long size = s.computeSize();
      shape[0] = (int) Math.max(1, max_size / size);
      return new Section(shape);
    }
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  public void utestMargolis() throws IOException, InvalidRangeException {
    String dataDir = TestAll.cdmUnitTestDir + "nomads/gfs-hi/";
    GridDataset gridDataset = GridDataset.open( "D:/AStest/margolis/grib2ncdf.ncml" );
    GeoGrid grid = gridDataset.findGridByName( "Turbulence_SIGMET_AIRMET" );
    System.out.println("Grid= "+grid+" section="+ new Section(grid.getShape()));
    System.out.println(" coordSys= "+grid.getCoordinateSystem());

    GeoGrid subset = (GeoGrid) grid.makeSubset(new Range(0, 0), null, new Range(1,1), null, null, null);
    System.out.println("subset= "+subset+" section="+ new Section(subset.getShape()));
    System.out.println(" coordSys= "+subset.getCoordinateSystem());

    gridDataset.close();
  }
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    // we have to translate the want section into the same rank as the storageSize, in order to be able to call
    // Section.intersect(). It appears that storageSize (actually msl.chunkSize) may have an extra dimension, reletive
    // to the Variable.
    if ((dtype == DataType.CHAR) && (wantSection.getRank() < vinfo.storageSize.length))
      this.want = new Section(wantSection).appendRange(1);
    else
      this.want = wantSection;

    // one less chunk dimension, except in the case of char
    int nChunkDims = (dtype == DataType.CHAR) ? vinfo.storageSize.length : vinfo.storageSize.length - 1;
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    // we have to translate the want section into the same rank as the storageSize, in order to be able to call
    // Section.intersect(). It appears that storageSize (actually msl.chunkSize) may have an extra dimension, reletive
    // to the Variable.
    DataType dtype = v2.getDataType();
    if ((dtype == DataType.CHAR) && (wantSection.getRank() < vinfo.storageSize.length))
      this.want = new Section(wantSection).appendRange(1);
    else
      this.want = wantSection;

    // one less chunk dimension, except in the case of char
    nChunkDims = (dtype == DataType.CHAR) ? vinfo.storageSize.length : vinfo.storageSize.length - 1;
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