Package ucar.nc2.units

Examples of ucar.nc2.units.DateFormatter

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   * @param ncfile the NetcdfFile to test
   * @return true if we think this is a Zebra file.
   */
  public static boolean isMine(NetcdfFile ncfile) {

    Variable v = ncfile.findVariable("time_offset");
    if (v == null || !v.isCoordinateVariable()) return false;
    String desc = v.getDescription();
    if (desc == null || !desc.equals("Time delta from start_time")) return false;

    if (null == ncfile.findGlobalAttribute( "start_date")) return false;
    if (null == ncfile.findGlobalAttribute( "start_time")) return false;

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      start = df.parse(start_date);
    } catch (ParseException e) {
      throw new RuntimeException("Cant read start_date="+start_date);
    }

    Variable v = ds.findVariable("time_offset");
    v.addAttribute(new Attribute( "units", "seconds since "+dfo.toDateTimeString(start)));

    Group root = ds.getRootGroup();
    root.addAttribute(new Attribute( "Convention", "Suomi-Station-CDM"));   
    ds.finish();
  }
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    return 0;
  }

  // section reading for member data
  static public ucar.ma2.Array readSection(ParsedSectionSpec cer) throws IOException, InvalidRangeException {
    Variable inner = null;
    List<Range> totalRanges = new ArrayList<Range>();
    ParsedSectionSpec current = cer;
    while (current != null) {
      totalRanges.addAll( current.section.getRanges());
      inner = current.v;
      current = current.child;
    }

    Section total = new Section( totalRanges);
    Array result = Array.factory(inner.getDataType(), total.getShape());

    // must be a Structure
    Structure outer = (Structure) cer.v;
    Structure outerSubset = outer.select( cer.child.v.getShortName()); // allows IOSPs to optimize for  this case
    ArrayStructure outerData = (ArrayStructure) outerSubset.read(cer.section);
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    String timeVars = ds.findAttValueIgnoreCase(null, "timeVariables", "");
    StringTokenizer stoker = new StringTokenizer( timeVars, ", ");
    while (stoker.hasMoreTokens()) {
      String vname = stoker.nextToken();
      Variable v = ds.findVariable(vname);
      if (v != null) {
        v.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Time.toString()));
      } else {
        parseInfo.format(" cant find time variable %s\n", vname);
      }
    }

    String locVars = ds.findAttValueIgnoreCase(null, "stationLocationVariables", "");
    stoker = new StringTokenizer( locVars, ", ");
    int count = 0;
    while (stoker.hasMoreTokens()) {
      String vname = stoker.nextToken();
      Variable v = ds.findVariable(vname);
      if (v != null) {
        AxisType atype = count == 0 ? AxisType.Lat : count == 1 ? AxisType.Lon : AxisType.Height;
        v.addAttribute(new Attribute(_Coordinate.AxisType, atype.toString()));
      } else {
        parseInfo.format(" cant find time variable %s\n",vname);
      }
      count++;
    }
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   */
  public AtmosLnPressure(NetcdfFile ds, Dimension timeDim, List<Parameter> params) {
    super(timeDim);

    String p0name = getParameterStringValue(params, P0);
    Variable p0var = ds.findVariable(p0name);
    double p0;
    try {
      p0 = p0var.readScalarDouble();
    } catch (IOException e) {
      throw new IllegalArgumentException("AtmosLnPressure failed to read "
          + p0name + " err= " + e.getMessage());
    }

    String levName = getParameterStringValue(params, LEV);
    Variable levVar = ds.findVariable(levName);

    try {
      Array lev = levVar.read();
      assert lev.getRank() == 1;
      pressure = new ArrayDouble.D1( (int) lev.getSize());
      IndexIterator ii = pressure.getIndexIterator();
      while (lev.hasNext()) {
        double result = p0 * Math.exp(-lev.nextDouble());
 
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    super.findCoordinateAxes(ds);
  }

  protected AxisType getAxisType( NetcdfDataset ncd, VariableEnhanced v) {

    AxisType atype = super.getAxisType(ncd, v);
    if (atype != null) return atype;

    String unit = v.getUnitsString();
    if (unit == null)
      return null;
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    int count = 0;
    while (stoker.hasMoreTokens()) {
      String vname = stoker.nextToken();
      Variable v = ds.findVariable(vname);
      if (v != null) {
        AxisType atype = count == 0 ? AxisType.Lat : count == 1 ? AxisType.Lon : AxisType.Height;
        v.addAttribute(new Attribute(_Coordinate.AxisType, atype.toString()));
      } else {
        parseInfo.format(" cant find time variable %s\n",vname);
      }
      count++;
    }
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    if (positive != null) {
      v.addAttribute(new Attribute("positive", positive));
    }

    if (units != null) {
      AxisType axisType;
      if (SimpleUnit.isCompatible("millibar", units)) {
        axisType = AxisType.Pressure;
      } else if (SimpleUnit.isCompatible("m", units)) {
        axisType = AxisType.Height;
      } else {
        axisType = AxisType.GeoZ;
      }

      if (lookup instanceof Grib2GridTableLookup || lookup instanceof Grib1GridTableLookup) {
        v.addAttribute(new Attribute("GRIB_level_type", Integer.toString(typicalRecord.getLevelType1())));
      } else {
        v.addAttribute(new Attribute("level_type", Integer.toString(typicalRecord.getLevelType1())));
      }
      v.addAttribute(new Attribute(_Coordinate.AxisType, axisType.toString()));
    }

    if (coordValues == null) {
      coordValues = new double[levels.size()];
      for (int i = 0; i < levels.size(); i++) {
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  private static void mergeOverwriteDataType( ThreddsMetadataBuilder first,
                                              ThreddsMetadataBuilder second,
                                              ThreddsMetadataBuilder mergedThreddsMetadata )
  {
    FeatureType dataType = second.getDataType() != null ? second.getDataType() : first.getDataType();
    if ( dataType != null )
      mergedThreddsMetadata.setDataType( dataType );
  }
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  private VerticalCT makeWRFEtaVerticalCoordinateTransform(NetcdfDataset ds, CoordinateSystem cs) {
    if ((null == ds.findVariable("PH")) || (null == ds.findVariable("PHB")) ||
        (null == ds.findVariable("P")) || (null == ds.findVariable("PB")))
      return null;

    WRFEtaTransformBuilder builder = new WRFEtaTransformBuilder(cs);
    return (VerticalCT) builder.makeCoordinateTransform(ds, null);
  }
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