Example #1
0
  @Test
  public void testFloatingPointCompare() throws Exception {
    String spec =
        TestDir.cdmUnitTestDir + "ft/fmrc/fp_precision/sediment_thickness_#yyMMddHHmm#.*\\.nc$";
    System.out.printf("%n====================FMRC dataset %s%n", spec);
    Formatter errlog = new Formatter();
    Fmrc fmrc = Fmrc.open(spec, errlog);
    assert (fmrc != null) : errlog;

    try (ucar.nc2.dt.GridDataset gridDs = fmrc.getDatasetBest()) {
      GridDatatype v = gridDs.findGridByShortName("thickness_of_sediment");
      assert v != null;
      GridCoordSystem gcs = v.getCoordinateSystem();
      CoordinateAxis1DTime time = gcs.getTimeAxis1D();

      Assert.assertEquals("hours since 2015-03-08 12:51:00.000 UTC", time.getUnitsString());
      Assert.assertEquals(74, time.getSize());
      Array data = time.read();
      System.out.printf("%s%n", NCdumpW.toString(data));

      for (CalendarDate cd : time.getCalendarDates()) {
        assert cd.getFieldValue(CalendarPeriod.Field.Minute) == 0 : System.out.printf("%s%n", cd);
      }
    }
  }
  public static DateRange extractDateRange(GridDataset gridDataset) {
    DateRange maxDateRange = null;

    for (GridDataset.Gridset gridset : gridDataset.getGridsets()) {
      GridCoordSystem gsys = gridset.getGeoCoordSystem();
      DateRange dateRange;

      CoordinateAxis1DTime time1D = gsys.getTimeAxis1D();
      if (time1D != null) {
        dateRange = time1D.getDateRange();
      } else {
        CoordinateAxis time = gsys.getTimeAxis();
        if (time == null) continue;

        try {
          DateUnit du = new DateUnit(time.getUnitsString());
          Date minDate = du.makeDate(time.getMinValue());
          Date maxDate = du.makeDate(time.getMaxValue());
          dateRange = new DateRange(minDate, maxDate);
        } catch (Exception e) {
          logger.warn("Illegal Date Unit " + time.getUnitsString());
          continue;
        }
      }

      if (maxDateRange == null) maxDateRange = dateRange;
      else maxDateRange.extend(dateRange);
    }

    return maxDateRange;
  }
Example #3
0
  public File writeCoverageDataToFile(
      WcsRequest.Format format,
      LatLonRect bboxLatLonRect,
      AxisSubset vertSubset,
      List<String> rangeSubset,
      CalendarDateRange timeRange)
      throws WcsException {
    boolean zRangeDone = false;
    boolean tRangeDone = false;

    try {
      // Get the height range.
      Range zRange = vertSubset != null ? vertSubset.getRange() : null;
      zRangeDone = true;

      // Get the time range.
      Range tRange = null;
      if (timeRange != null) {
        CoordinateAxis1DTime timeAxis = this.coordSys.getTimeAxis1D();
        int startIndex = timeAxis.findTimeIndexFromCalendarDate(timeRange.getStart());
        int endIndex = timeAxis.findTimeIndexFromCalendarDate(timeRange.getEnd());
        tRange = new Range(startIndex, endIndex);
        tRangeDone = true;
      }

      if (format == WcsRequest.Format.GeoTIFF || format == WcsRequest.Format.GeoTIFF_Float) {
        if (rangeSubset.size() != 1) {
          String msg =
              "GeoTIFF response encoding only available for single range field selection ["
                  + rangeSubset
                  + "].";
          log.error("writeCoverageDataToFile(): " + msg);
          throw new WcsException(WcsException.Code.InvalidParameterValue, "RangeSubset", msg);
        }
        String reqRangeFieldName = rangeSubset.get(0);

        File dir = new File(getDiskCache().getRootDirectory());
        File tifFile = File.createTempFile("WCS", ".tif", dir);
        if (log.isDebugEnabled())
          log.debug("writeCoverageDataToFile(): tifFile=" + tifFile.getPath());

        WcsRangeField rangeField = this.range.get(reqRangeFieldName);
        GridDatatype subset =
            rangeField.getGridDatatype().makeSubset(tRange, zRange, bboxLatLonRect, 1, 1, 1);
        Array data = subset.readDataSlice(0, 0, -1, -1);

        GeotiffWriter writer = new GeotiffWriter(tifFile.getPath());
        writer.writeGrid(
            this.dataset.getDataset(), subset, data, format == WcsRequest.Format.GeoTIFF);

        writer.close();

        return tifFile;
      } else if (format == WcsRequest.Format.NetCDF3) {
        File dir = new File(getDiskCache().getRootDirectory());
        File outFile = File.createTempFile("WCS", ".nc", dir);
        if (log.isDebugEnabled())
          log.debug("writeCoverageDataToFile(): ncFile=" + outFile.getPath());
        // WTF ?? this.coordSys.getVerticalAxis().isNumeric();

        NetcdfFileWriter writer =
            NetcdfFileWriter.createNew(NetcdfFileWriter.Version.netcdf3, outFile.getAbsolutePath());
        CFGridWriter2.writeFile(
            this.dataset.getDataset(),
            rangeSubset,
            bboxLatLonRect,
            null,
            1,
            zRange,
            timeRange,
            1,
            true,
            writer);
        return outFile;
      } else {
        log.error(
            "writeCoverageDataToFile(): Unsupported response encoding format [" + format + "].");
        throw new WcsException(
            WcsException.Code.InvalidFormat,
            "Format",
            "Unsupported response encoding format [" + format + "].");
      }
    } catch (InvalidRangeException e) {
      String msg = "Failed to subset coverage [" + this.getName();
      if (!zRangeDone) msg += "] along vertical axis [" + vertSubset + "]. ";
      else if (!tRangeDone) msg += "] along time axis [" + timeRange + "]. ";
      else msg += "] in horizontal plane [" + bboxLatLonRect + "]. ";
      log.error("writeCoverageDataToFile(): " + msg + e.getMessage());
      throw new WcsException(WcsException.Code.CoverageNotDefined, "", msg);
    } catch (IOException e) {
      log.error(
          "writeCoverageDataToFile(): Failed to write file for requested coverage <"
              + this.getName()
              + ">: "
              + e.getMessage());
      throw new WcsException(
          WcsException.Code.UNKNOWN, "", "Problem creating coverage [" + this.getName() + "].");
    }
  }