Package ucar.nc2.iosp.hdf5

Source Code of ucar.nc2.iosp.hdf5.TestH5ReadArray

/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
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* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
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package ucar.nc2.iosp.hdf5;

import junit.framework.*;
import ucar.ma2.*;
import ucar.nc2.NetcdfFile;
import ucar.nc2.Variable;

import java.io.*;

/** Test nc2 read JUnit framework. */

public class TestH5ReadArray extends TestCase {

  public TestH5ReadArray(String name) {
    super(name);
  }

  public void testReadArrayType() throws IOException {
    NetcdfFile ncfile = TestH5.openH5("support/SDS_array_type.h5");

    Variable dset = null;
    assert(null != (dset = ncfile.findVariable("IntArray")));
    assert(dset.getDataType() == DataType.INT);

    assert(dset.getRank() == 3);
    assert(dset.getShape()[0] == 10);
    assert(dset.getShape()[1] == 5);
    assert(dset.getShape()[2] == 4);

    // read entire array
    Array A;
    try {
      A = dset.read();
    }
    catch (IOException e) {
      System.err.println("ERROR reading file");
      assert(false);
      return;
    }
    assert(A.getRank() == 3);

    Index ima = A.getIndex();
    int[] shape = A.getShape();

    for (int i = 0; i < shape[0]; i++)
      for (int j = 0; j < shape[1]; j++)
        for (int k = 0; k < shape[2]; k++)
          if (A.getInt(ima.set(i, j, k)) != i) {
            assert false;
          }


          // read part of array
    dset.setCachedData(null, false); // turn off caching to test read subset
    dset.setCaching(false);
    int[] origin2 = new int[3];
    int[] shape2 = new int[] {
        10, 1, 1};
    try {
      A = dset.read(origin2, shape2);
    }
    catch (InvalidRangeException e) {
      System.err.println("ERROR reading file " + e);
      assert(false);
      return;
    }
    catch (IOException e) {
      System.err.println("ERROR reading file");
      assert(false);
      return;
    }
    assert(A.getRank() == 3);
    assert(A.getShape()[0] == 10);
    assert(A.getShape()[1] == 1);
    assert(A.getShape()[2] == 1);

    ima = A.getIndex();
    for (int j = 0; j < shape2[0]; j++) {
      assert(A.getInt(ima.set0(j)) == j):A.getInt(ima);
    }

    // rank reduction
    Array Areduce = A.reduce();
    Index ima2 = Areduce.getIndex();
    assert(Areduce.getRank() == 1);
    ima = A.getIndex();

    for (int j = 0; j < shape2[0]; j++) {
      assert(A.getInt(ima.set0(j)) == j);
    }

    ncfile.close();
  }

}
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