Java Code Examples for ucar.nc2.units.DateUnit#getStandardDate()

/**
 * Make a time struct from the index.
 *
 * @param timeIndex the time value index
 *
 * @return the corresponding TimeStruct
 */
public GradsTimeStruct makeTimeStruct(int timeIndex) {
  double tVal = getValues()[timeIndex];
  Date d = DateUnit.getStandardDate(tVal + " " + getUnit());
  Calendar calendar = Calendar.getInstance();
  calendar.setTimeZone(java.util.TimeZone.getTimeZone("GMT"));
  calendar.setTime(d);
  return makeTimeStruct(calendar);
}
 

private void testDate(String udunits) {

    Date uddate = DateUnit.getStandardDate(udunits);
    CalendarDate cd = CalendarDate.parseUdunits(null, udunits);

    if (!uddate.equals(cd.toDate())) {
      System.out.printf("  BAD %s == %s != %s (diff = %d)%n", udunits, df.toDateTimeString(uddate), cd,
          cd.toDate().getTime() - uddate.getTime());
    }
  }
 

public Date getTime(int point) throws IOException {
  return (DateUnit.getStandardDate(getTimeValue(point) + " " + timeVarUnitsString));
}
 

public Date getNominalTimeAsDate() {
  String dateStr = getNominalTime() + " " + timeVarUnitsString;
  return DateUnit.getStandardDate(dateStr);
}
 

public Date getObservationTimeAsDate() {
  String dateStr = getObservationTime() + " " + timeVarUnitsString;
  return DateUnit.getStandardDate(dateStr);
}
 

public static boolean isValidFile(NetcdfDataset ds) {
  // Check that has a time dimension and a trajectory dimension.
  List list = ds.getRootGroup().getDimensions();
  if (list.size() != 2)
    return (false);
  Dimension d;
  for (int i = 0; i < 2; i++) {
    d = (Dimension) list.get(i);
    if (!d.getShortName().equals(timeDimNameDefault) && !d.getShortName().equals(trajDimNameDefault))
      return (false);
  }

  // Check that has a trajectory coordinate variable.
  Variable var = ds.getRootGroup().findVariableLocal(trajVarNameDefault);
  if (var == null)
    return (false);
  list = var.getDimensions();
  if (list.size() != 1)
    return (false);
  d = (Dimension) list.get(0);
  if (!d.getShortName().equals(trajDimNameDefault))
    return (false);

  // Check that has a time coordinate variable with units that are udunits time
  var = ds.getRootGroup().findVariableLocal(timeVarNameDefault);
  if (var == null)
    return (false);
  list = var.getDimensions();
  if (list.size() != 1)
    return (false);
  d = (Dimension) list.get(0);
  if (!d.getShortName().equals(timeDimNameDefault))
    return (false);
  String units = var.findAttribute("units").getStringValue();
  Date date = DateUnit.getStandardDate("0 " + units);
  if (date == null)
    return (false);

  // Check for variable latitude(time) with units of "deg".
  var = ds.getRootGroup().findVariableLocal(latVarNameDefault);
  if (var == null)
    return (false);
  list = var.getDimensions();
  if (list.size() != 2)
    return (false);
  for (int i = 0; i < 2; i++) {
    d = (Dimension) list.get(i);
    if (!d.getShortName().equals(timeDimNameDefault) && !d.getShortName().equals(trajDimNameDefault))
      return (false);
  }
  // units = var.findAttribute( "units").getStringValue();
  // if ( ! SimpleUnit.isCompatible( units, "degrees_north")) return( false);

  // Check for variable longitude(time) with units of "deg".
  var = ds.getRootGroup().findVariableLocal(lonVarNameDefault);
  if (var == null)
    return (false);
  list = var.getDimensions();
  if (list.size() != 2)
    return (false);
  for (int i = 0; i < 2; i++) {
    d = (Dimension) list.get(i);
    if (!d.getShortName().equals(timeDimNameDefault) && !d.getShortName().equals(trajDimNameDefault))
      return (false);
  }
  // units = var.findAttribute( "units").getStringValue();
  // if ( ! SimpleUnit.isCompatible( units, "degrees_east")) return( false);

  // Check for variable altitude(time) with units of "m".
  var = ds.getRootGroup().findVariableLocal(elevVarNameDefault);
  if (var == null)
    return (false);
  list = var.getDimensions();
  if (list.size() != 2)
    return (false);
  for (int i = 0; i < 2; i++) {
    d = (Dimension) list.get(i);
    if (!d.getShortName().equals(timeDimNameDefault) && !d.getShortName().equals(trajDimNameDefault))
      return (false);
  }
  units = var.findAttribute("units").getStringValue();
  if (!SimpleUnit.isCompatible(units, "m"))
    return (false);

  return (true);
}
 

/**
 * Setup needed for all SingleTrajectoryObsDatatypes. Can only be called once.
 *
 * Units of time varible must be udunits time units.
 * Units of latitude variable must be convertible to "degrees_north" by udunits.
 * Units of longitude variable must be convertible to "degrees_east" by udunits.
 * Units of altitude variable must be convertible to "meters" by udunits.
 *
 * @throws IllegalArgumentException if units of time, latitude, longitude, or altitude variables are not as required.
 * @throws IllegalStateException if this method has already been called.
 */
public void setTrajectoryInfo(Config trajConfig) throws IOException {
  if (timeDim != null)
    throw new IllegalStateException("The setTrajectoryInfo() method can only be called once.");

  this.trajectoryId = trajConfig.getTrajectoryId();
  this.timeDim = trajConfig.getTimeDim();
  this.timeVar = trajConfig.getTimeVar();
  this.latVar = trajConfig.getLatVar();
  this.lonVar = trajConfig.getLonVar();
  this.elevVar = trajConfig.getElevVar();

  trajectoryNumPoint = this.timeDim.getLength();
  timeVarUnitsString = this.timeVar.findAttribute("units").getStringValue();

  // Check that time, lat, lon, elev units are acceptable.
  if (DateUnit.getStandardDate(timeVarUnitsString) == null) {
    throw new IllegalArgumentException("Units of time variable <" + timeVarUnitsString + "> not a date unit.");
  }
  String latVarUnitsString = this.latVar.findAttribute("units").getStringValue();
  if (!SimpleUnit.isCompatible(latVarUnitsString, "degrees_north")) {
    throw new IllegalArgumentException(
        "Units of lat var <" + latVarUnitsString + "> not compatible with \"degrees_north\".");
  }
  String lonVarUnitsString = this.lonVar.findAttribute("units").getStringValue();
  if (!SimpleUnit.isCompatible(lonVarUnitsString, "degrees_east")) {
    throw new IllegalArgumentException(
        "Units of lon var <" + lonVarUnitsString + "> not compatible with \"degrees_east\".");
  }
  String elevVarUnitsString = this.elevVar.findAttribute("units").getStringValue();
  if (!SimpleUnit.isCompatible(elevVarUnitsString, "meters")) {
    throw new IllegalArgumentException(
        "Units of elev var <" + elevVarUnitsString + "> not compatible with \"meters\".");
  }

  try {
    elevVarUnitsConversionFactor = getMetersConversionFactor(elevVarUnitsString);
  } catch (Exception e) {
    throw new IllegalArgumentException(
        "Exception on getMetersConversionFactor() for the units of elev var <" + elevVarUnitsString + ">.");
  }

  if (this.netcdfDataset.hasUnlimitedDimension() && this.netcdfDataset.getUnlimitedDimension().equals(timeDim)) {
    Object result = this.netcdfDataset.sendIospMessage(NetcdfFile.IOSP_MESSAGE_ADD_RECORD_STRUCTURE);
    if ((result != null) && (Boolean) result)
      this.recordVar = (Structure) this.netcdfDataset.getRootGroup().findVariableLocal("record");
    else
      this.recordVar = new StructurePseudo(this.netcdfDataset, null, "record", timeDim);
  } else {
    this.recordVar = new StructurePseudo(this.netcdfDataset, null, "record", timeDim);
  }

  // @todo HACK, HACK, HACK - remove once addRecordStructure() deals with ncd attribute changes.
  Variable elevVarInRecVar = this.recordVar.findVariable(this.elevVar.getFullNameEscaped());
  if (!elevVarUnitsString.equals(elevVarInRecVar.findAttribute("units").getStringValue())) {
    elevVarInRecVar.addAttribute(new Attribute("units", elevVarUnitsString));
  }

  trajectoryVarsMap = new HashMap();
  // for ( Iterator it = this.recordVar.getVariables().iterator(); it.hasNext(); )
  for (Iterator it = this.netcdfDataset.getRootGroup().getVariables().iterator(); it.hasNext();) {
    Variable curVar = (Variable) it.next();
    if (curVar.getRank() > 0 && !curVar.equals(this.timeVar) && !curVar.equals(this.latVar)
        && !curVar.equals(this.lonVar) && !curVar.equals(this.elevVar)
        && (this.recordVar == null ? true : !curVar.equals(this.recordVar))) {
      MyTypedDataVariable typedVar = new MyTypedDataVariable(new VariableDS(null, curVar, true));
      dataVariables.add(typedVar);
      trajectoryVarsMap.put(typedVar.getShortName(), typedVar);
    }
  }

  trajectory = new SingleTrajectory(this.trajectoryId, trajectoryNumPoint, this.timeVar, timeVarUnitsString,
      this.latVar, this.lonVar, this.elevVar, dataVariables, trajectoryVarsMap);

  startDate = trajectory.getTime(0);
  endDate = trajectory.getTime(trajectoryNumPoint - 1);

  ((SingleTrajectory) trajectory).setStartDate(startDate);
  ((SingleTrajectory) trajectory).setEndDate(endDate);
}
 

public Date getTime(int point) throws IOException {
  return (DateUnit.getStandardDate(getTimeValue(point) + " " + timeVarUnitsString));
}
 

public Date getNominalTimeAsDate() {
  String dateStr = getNominalTime() + " " + timeVarUnitsString;
  return DateUnit.getStandardDate(dateStr);
}
 

public Date getObservationTimeAsDate() {
  String dateStr = getObservationTime() + " " + timeVarUnitsString;
  return DateUnit.getStandardDate(dateStr);
}
 

/**
 * _more_
 *
 * @param point _more_
 *
 * @return _more_
 *
 * @throws IOException _more_
 */
public Date getTime(int point) throws IOException {
  if (SimpleUnit.isDateUnit(dimVarUnitsString))
    return (DateUnit.getStandardDate(getTimeValue(point) + " " + dimVarUnitsString));
  else
    return startDate;
}
 

/**
 * _more_
 *
 * @return _more_
 */
public Date getNominalTimeAsDate() {
  String dateStr = getNominalTime() + " " + dimVarUnitsString;
  return DateUnit.getStandardDate(dateStr);
}
 

/**
 * _more_
 *
 * @return _more_
 */
public Date getObservationTimeAsDate() {
  String dateStr = getObservationTime() + " " + dimVarUnitsString;
  return DateUnit.getStandardDate(dateStr);
}