Java Code Examples for ucar.nc2.NetcdfFiles#openInMemory()

private boolean scanBufrFile(String filename)
    throws IOException, IllegalAccessException, InstantiationException, ClassNotFoundException {
  int count = 0;
  try (RandomAccessFile raf = new RandomAccessFile(filename, "r")) {

    MessageScanner scan = new MessageScanner(raf);
    while (scan.hasNext()) {
      Message m = scan.next();
      if (m == null)
        continue;
      byte[] mbytes = scan.getMessageBytes(m);
      try (NetcdfFile ncfile = NetcdfFiles.openInMemory("test", mbytes, "ucar.nc2.iosp.bufr.BufrIosp2")) {
        NetcdfDataset ncd = new NetcdfDataset(ncfile);
      }
    }
  }
  return true;
}
 

@Test
public void shouldGetAllVariables() throws Exception {
  MvcResult mvc = this.mockMvc.perform(requestBuilder).andReturn();
  assertEquals(200, mvc.getResponse().getStatus());

  // Open the binary response in memory
  // NetcdfFile nf = NetcdfFile.openInMemory("test_data.ncs", response.getContentAsByteArray() );
  NetcdfFile nf;
  GridDataset gdsDataset;
  if (TestDir.cdmUseBuilders) {
    nf = NetcdfFiles.openInMemory("test_data.ncs", mvc.getResponse().getContentAsByteArray());
    gdsDataset =
        new ucar.nc2.dt.grid.GridDataset(NetcdfDatasets.enhance(nf, NetcdfDataset.getDefaultEnhanceMode(), null));
  } else {
    nf = NetcdfFile.openInMemory("test_data.ncs", mvc.getResponse().getContentAsByteArray());
    gdsDataset = new ucar.nc2.dt.grid.GridDataset(new NetcdfDataset(nf));
  }

  assertTrue(gdsDataset.getCalendarDateRange().isPoint());
  assertEquals(7, gdsDataset.getDataVariables().size());

}
 

@Test
public void testStuff() throws Exception {
  String unitDir = TestDir.cdmUnitTestDir + "datasets/bufr/exclude/";
  String filename = unitDir + "uniqueExamples.bufr";

  int size = 0;
  int count = 0;

  try (RandomAccessFile raf = new RandomAccessFile(filename, "r"); OutputStream out = new ByteArrayOutputStream()) {
    MessageScanner scan = new MessageScanner(raf);
    while (scan.hasNext()) {
      Message message = scan.next();
      if (message == null || !message.isTablesComplete() || !message.isBitCountOk())
        continue;
      byte[] mbytes = scan.getMessageBytesFromLast(message);
      NetcdfFile ncfile = NetcdfFiles.openInMemory("test", mbytes, "ucar.nc2.iosp.bufr.BufrIosp");
      NetcdfDataset ncd = new NetcdfDataset(ncfile);
      new Bufr2Xml(message, ncd, out, true);
      out.close();
      count++;
      size += message.getMessageSize();
    }

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

  System.out.printf("total size= %f Kb %n", .001 * size);
}
 

@Test
public void testVert() throws IOException {
  String endpoint = TestOnLocalServer.withHttpPath(
      dataset1 + "&request=GetCoverage&COVERAGE=Temperature&TIME=2012-04-19T00:00:00Z&FORMAT=NetCDF3&vertical=800");
  byte[] content = TestOnLocalServer.getContent(endpoint, 200, null);

  // Open the binary response in memory
  try (NetcdfFile nf = NetcdfFiles.openInMemory("test_data.nc", content)) {
    DtCoverageDataset dt = getDtCoverageDataset(nf);
    Formatter errlog = new Formatter();
    FeatureDatasetCoverage cdc = DtCoverageAdapter.factory(dt, errlog);
    Assert.assertNotNull(errlog.toString(), cdc);
    Assert.assertEquals(1, cdc.getCoverageCollections().size());
    CoverageCollection cd = cdc.getCoverageCollections().get(0);
    assertNotNull(cd);

    Coverage cov = cd.findCoverage("Temperature");
    assertNotNull("Temperature", cov);

    CoverageCoordSys csys = cov.getCoordSys();
    assertNotNull("csys", csys);

    CoverageCoordAxis1D time = (CoverageCoordAxis1D) csys.getAxis(AxisType.Time);
    assertNotNull("time", time);
    Assert.assertEquals(1, time.getNcoords());
    CalendarDate date = time.makeDate(time.getCoordMidpoint(0));
    logger.debug("date = {}", date);
    Assert.assertEquals(date, CalendarDate.parseISOformat(null, "2012-04-19T00:00:00Z"));

    CoverageCoordAxis1D vert = (CoverageCoordAxis1D) csys.getZAxis();
    assertNotNull("vert", vert);
    Assert.assertEquals(1, vert.getNcoords());
    double vertCoord = vert.getCoordMidpoint(0);
    logger.debug("date = {}", date);
    Assert2.assertNearlyEquals(800.0, vertCoord);
  }
}
 

private void openBinaryNew(byte[] content, String gridName) throws IOException {
  try (NetcdfFile nf = NetcdfFiles.openInMemory("test_data.nc", content)) {
    GridDataset gdsDataset = new GridDataset(NetcdfDatasets.enhance(nf, NetcdfDataset.getDefaultEnhanceMode(), null));
    assertNotNull(gdsDataset.findGridByName(gridName));
    logger.debug("{}", nf);
  }
}
 

private void checkGridAsPointNetcdfNew(byte[] content, String varName) throws JDOMException, IOException {
  // Open the binary response in memory
  Formatter errlog = new Formatter();
  try (NetcdfFile nf = NetcdfFiles.openInMemory("checkGridAsPointNetcdf.nc", content)) {
    FeatureDataset fd = FeatureDatasetFactoryManager.wrap(FeatureType.STATION,
        NetcdfDatasets.enhance(nf, NetcdfDataset.getDefaultEnhanceMode(), null), null, errlog);
    assertNotNull(errlog.toString(), fd);
    VariableSimpleIF v = fd.getDataVariable(varName);
    assertNotNull(varName, v);
  }
}
 

@Test
public void testGetCoverageNetcdf() throws IOException {
  String endpoint = TestOnLocalServer.withHttpPath(
      dataset2 + "&request=GetCoverage&COVERAGE=sst&BBOX=10,0,300,80&TIME=2002-12-01T00:00:00Z&FORMAT=NetCDF3");
  byte[] content = TestOnLocalServer.getContent(endpoint, 200, null);

  // Open the binary response in memory
  try (NetcdfFile nf = NetcdfFiles.openInMemory("test_data.nc", content)) {
    DtCoverageDataset dt = getDtCoverageDataset(nf);
    Formatter errlog = new Formatter();
    FeatureDatasetCoverage cdc = DtCoverageAdapter.factory(dt, errlog);
    Assert.assertNotNull(errlog.toString(), cdc);
    Assert.assertEquals(1, cdc.getCoverageCollections().size());
    CoverageCollection cd = cdc.getCoverageCollections().get(0);
    assertNotNull(cd);

    Coverage cov = cd.findCoverage("sst");
    assertNotNull("sst", cov);

    CoverageCoordSys csys = cov.getCoordSys();
    assertNotNull("csys", csys);

    CoverageCoordAxis1D time = (CoverageCoordAxis1D) csys.getAxis(AxisType.Time);
    assertNotNull("time", time);
    Assert.assertEquals(1, time.getNcoords());
    CalendarDate date = time.makeDate(time.getCoordMidpoint(0));
    logger.debug("date = {}", date);
    CalendarDate expected = CalendarDate.parseISOformat(Calendar.gregorian.toString(), "2002-12-01T00:00:00Z"); // CF
                                                                                                                // i
                                                                                                                // guess
    Assert.assertEquals(expected.getMillis(), date.getMillis());
    Assert.assertEquals(expected.getCalendar(), date.getCalendar());
    Assert.assertEquals(expected, date);

    HorizCoordSys hcs = csys.getHorizCoordSys();
    CoverageCoordAxis1D xaxis = hcs.getXAxis();
    Assert.assertEquals(291, xaxis.getNcoords());
    Assert2.assertNearlyEquals(10.5, xaxis.getCoordMidpoint(0));
    Assert2.assertNearlyEquals(300.5, xaxis.getEndValue()); // LOOK is that ok? BB = 10-300: its just catching the
                                                            // edge
    Assert2.assertNearlyEquals(1.0, xaxis.getResolution());

    CoverageCoordAxis1D yaxis = hcs.getYAxis();
    Assert.assertEquals(81, yaxis.getNcoords());
    Assert2.assertNearlyEquals(79.5, yaxis.getCoordMidpoint(0));
    Assert2.assertNearlyEquals(-.5, yaxis.getEndValue()); // LOOK is that ok? BB = 0-80: its just catching the edge
    Assert2.assertNearlyEquals(-1.0, yaxis.getResolution());
  }
}