Examples of ucar.nc2.units.DateUnit

ucar.nc2.units.DateUnit
Handles udunits dates, represented as "n units of time since reference date" eg "1203 days since 1970-01-01 00:00:00".
This is a wrapper around ucar.units package. It tracks the value, the base time unit, and the date origin seperately. @author caron

    }


    TimeCoord(Date runDate, CoordinateAxis1D axis) {
      this.axis = axis;


      DateUnit unit = null;
      try {
        unit = new DateUnit(axis.getUnitsString());
      } catch (Exception e) {
        throw new IllegalArgumentException("Not a unit of time "+axis.getUnitsString());
      }


      int n = (int) axis.getSize();
      offset = new double[n];
      for (int i = 0; i < axis.getSize(); i++) {
        Date d = unit.makeDate(axis.getCoordValue(i));
        offset[i] = getOffsetInHours(runDate, d);
      }
    }

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    List axes = ds.getCoordinateAxes();
    for (int i = 0; i < axes.size(); i++) {
      CoordinateAxis axis = (CoordinateAxis) axes.get(i);
      if (axis.getAxisType() == AxisType.Time) {
        String units = axis.getUnitsString();
        dateUnits =  new DateUnit(units);
        return;
      }
    }
    parseInfo.append("*** Time Units not Found\n");
  }

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    if (axis == null) {
      parseInfo.append("*** Time Units not Found\n");


    } else {
      String units = axis.getUnitsString();
      dateUnits = new DateUnit(units);
    }


  }

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    {4194.0, 4197.0, 4200.0, 4203.0, 4206.0, 4209.0, 4212.0, 4215.0, 4218.0, 4221.0, 4224.0, 4227.0, 4230.0, 4233.0, 4236.0, 4239.0, 4242.0, 4245.0, 4248.0, 4251.0, 4254.0, 4257.0, 4260.0, 4263.0, 4266.0, 4269.0, 4272.0, 4275.0, 4278.0},
    {4200.0, 4203.0, 4206.0, 4209.0, 4212.0, 4215.0, 4218.0, 4221.0, 4224.0, 4227.0, 4230.0, 4233.0, 4236.0, 4239.0, 4242.0, 4245.0, 4248.0, 4251.0, 4254.0, 4257.0, 4260.0, 4263.0, 4266.0, 4269.0, 4272.0, 4275.0, 4278.0, 4281.0, 4284.0},
    {4206.0, 4209.0, 4212.0, 4215.0, 4218.0, 4221.0, 4224.0, 4227.0, 4230.0, 4233.0, 4236.0, 4239.0, 4242.0, 4245.0, 4248.0, 4251.0, 4254.0, 4257.0, 4260.0, 4263.0, 4266.0, 4269.0, 4272.0, 4275.0, 4278.0, 4281.0, 4284.0, 4287.0, 4290.0}
  };


    testAggCoordVar(ncfile, naggs, new DateUnit("hours since 2006-03-15T18:00:00Z"), runhours);
    testTimeCoordVar(ncfile, naggs, 29, "time", timevals);


    System.out.println("TestAggForecastModel.testReadData ");    
    testReadData(ncfile, naggs);
 //   testReadSlice(ncfile);

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    String timeVarName = "time";
    String timeDimName = "time";
    testDimensions(ncfile, naggs, timeDimName);
    testCoordVar(ncfile, 257);
    int[] runtimes = new int[] {0,6,12,18};
    testAggCoordVar(ncfile, naggs, new DateUnit("hours since 2006-07-29T18:00:00Z"), runtimes);
    testTimeCoordVar(ncfile, naggs, 29, timeVarName, evals);


    ncfile.close();
  }

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    assert time.getShape()[0] == nagg;
    assert time.getShape()[1] == ntimes;
    assert time.getDataType() == DataType.DOUBLE || time.getDataType() == DataType.INT;


    String units = time.getUnitsString();
    DateUnit du = new DateUnit( units);


    DateFormatter formatter = new DateFormatter();
    Array data = time.read();
    if (true) {
      PrintWriter pw = new PrintWriter(System.out);
      NCdumpW.printArray(data, "timeCoords", pw, null);
      pw.flush();
    }


    assert data.getSize() == nagg * ntimes;
    assert data.getShape()[0] == nagg;
    assert data.getShape()[1] == ntimes;
    assert data.getElementType() == double.class || data.getElementType() == int.class;


    while (data.hasNext()) {
      double val = data.nextDouble();
      Date date = du.makeDate(val);
      // if (showValues) System.out.println(" date= "+ formatter.toDateTimeStringISO(date));
    }


    Index ima = data.getIndex();
    for (int run=0; run<nagg; run++)

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    CoordValueVar(String varName, DataType dtype, String units) {
      super(varName, dtype);
      this.units = units;
      try {
        du = new DateUnit(units);
      } catch (Exception e) {
        // ok to fail - may not be a time coordinate
      }
    }

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    startDate = new Date();
    endDate = new Date();


    try {
      timeUnit = new DateUnit("hours since 1991-01-01T00:00");
    } catch (Exception e) {
      e.printStackTrace();
    }


    parser = new MetarParseReport();

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      }


    } else {      
      timeAxis.setDataType(DataType.DOUBLE); // otherwise fractional values get lost


      DateUnit du;
      try {
        du = new DateUnit(timeUnits);
      } catch (Exception e) {
        throw new IOException(e.getMessage());
      }
      timeAxis.addAttribute(new Attribute("units", timeUnits));


      for (Date date : dateList) {
        double val = du.makeValue(date);
        ii.setDoubleNext(val);
      }
    }


    timeAxis.setCachedData(timeCoordVals, false);

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            DateUnit.getStandardOrISO((String) radarTimeSpan.get(0));
        this.endDate =
            DateUnit.getStandardOrISO((String) radarTimeSpan.get(1));


        try {
            timeUnit = new DateUnit("hours since 1991-01-01T00:00");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

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