ucar.nc2.dt.trajectory
Class ZebraClassTrajectoryObsDataset

java.lang.Object
  ucar.nc2.dt.TypedDatasetImpl
      ucar.nc2.dt.trajectory.ZebraClassTrajectoryObsDataset

All Implemented Interfaces:

TrajectoryObsDataset, TypedDataset, TypedDatasetFactoryIF

public class ZebraClassTrajectoryObsDataset
extends TypedDatasetImpl
implements TypedDatasetFactoryIF

Implements TrajectoryDataset for datasets with these characteristics:

• it has only one dimension, the dimension is UNLIMITED and is named "time"
• it has one coordinate variable, time(time), with units that are udunits time units
• has the variables latitude(time), longitude(time), and altitude(time) with units "deg", "deg", and "m", respectively.

Since:

Feb 22, 2005T5:37:14 PM

Author:

edavis

Nested Class Summary

static class

SingleTrajectoryObsDataset.Config

Field Summary

protected Variable	elevVar
protected double	elevVarUnitsConversionFactor
protected Variable	latVar
protected Variable	lonVar
protected static SimpleUnit	meterUnit
protected Structure	recordVar
protected Dimension	timeDim
protected Variable	timeVar
protected java.lang.String	timeVarUnitsString
protected TrajectoryObsDatatype	trajectory
protected java.lang.String	trajectoryId
protected int	trajectoryNumPoint
protected java.util.HashMap	trajectoryVarsMap

Fields inherited from class ucar.nc2.dt.TypedDatasetImpl

boundingBox, dataVariables, desc, endDate, location, ncfile, parseInfo, startDate, title

Constructor Summary

ZebraClassTrajectoryObsDataset()

ZebraClassTrajectoryObsDataset(NetcdfDataset ncd)

Method Summary

java.lang.String	getDetailInfo() Show debug / underlying implementation details
protected static double	getMetersConversionFactor(java.lang.String unitsString)
DataType	getScientificDataType() What kind of cientific data type will this return?
java.util.List	getTrajectories() Get trajectories contained in this dataset.
TrajectoryObsDatatype	getTrajectory(java.lang.String trajectoryId) Get the named trajectory
java.util.List	getTrajectoryIds() Get a list of String IDs for the available trajectories.
boolean	isMine(NetcdfDataset ds) Determine if this dataset belongs to you
static boolean	isValidFile(NetcdfDataset ncd)
TypedDataset	open(NetcdfDataset ncd, CancelTask task, java.lang.StringBuffer errlog) Open a NetcdfDataset as a TypedDataset.
protected void	setBoundingBox()
protected void	setEndDate()
protected void	setStartDate()
void	setTrajectoryInfo(SingleTrajectoryObsDataset.Config trajConfig) Setup needed for all SingleTrajectoryObsDatatypes.
boolean	syncExtend() Syncronize with the underlying dataset if it has been extended in a way that is compatible with the existing structural metadata (for instance, if the unlimited dimension has grown).

Methods inherited from class ucar.nc2.dt.TypedDatasetImpl

close, findGlobalAttributeIgnoreCase, getBoundingBox, getDataVariable, getDataVariables, getDescription, getEndDate, getGlobalAttributes, getLocationURI, getNetcdfFile, getStartDate, getTitle, removeDataVariable, setDescription, setLocationURI, setTitle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ucar.nc2.dt.TypedDataset

close, findGlobalAttributeIgnoreCase, getBoundingBox, getDataVariable, getDataVariables, getDescription, getEndDate, getGlobalAttributes, getLocationURI, getNetcdfFile, getStartDate, getTitle

Field Detail

trajectoryId

protected java.lang.String trajectoryId

trajectoryNumPoint

protected int trajectoryNumPoint

trajectoryVarsMap

protected java.util.HashMap trajectoryVarsMap

timeDim

protected Dimension timeDim

timeVar

protected Variable timeVar

recordVar

protected Structure recordVar

latVar

protected Variable latVar

lonVar

protected Variable lonVar

elevVar

protected Variable elevVar

timeVarUnitsString

protected java.lang.String timeVarUnitsString

elevVarUnitsConversionFactor

protected double elevVarUnitsConversionFactor

trajectory

protected TrajectoryObsDatatype trajectory

meterUnit

protected static SimpleUnit meterUnit

Constructor Detail

ZebraClassTrajectoryObsDataset

public ZebraClassTrajectoryObsDataset()

ZebraClassTrajectoryObsDataset

public ZebraClassTrajectoryObsDataset(NetcdfDataset ncd)
                               throws java.io.IOException

Throws:

java.io.IOException

Method Detail

isValidFile

public static boolean isValidFile(NetcdfDataset ncd)

isMine

public boolean isMine(NetcdfDataset ds)

Description copied from interface: TypedDatasetFactoryIF

Determine if this dataset belongs to you

Specified by:

isMine in interface TypedDatasetFactoryIF

Parameters:

ds - examine this NetcdfDataset to see if it belongs to this class.

Returns:

true if this class knows how to create a TypedDataset out of this NetcdfDataset.

open

public TypedDataset open(NetcdfDataset ncd,
                         CancelTask task,
                         java.lang.StringBuffer errlog)
                  throws java.io.IOException

Description copied from interface: TypedDatasetFactoryIF

Open a NetcdfDataset as a TypedDataset.

Specified by:

open in interface TypedDatasetFactoryIF

Parameters:

ncd - already opened NetcdfDataset.

task - use may cancel

errlog - place errors here

Returns:

a subclass of TypedDataset

Throws:

java.io.IOException - on error

getScientificDataType

public DataType getScientificDataType()

Description copied from interface: TypedDatasetFactoryIF

What kind of cientific data type will this return?

Specified by:

getScientificDataType in interface TypedDatasetFactoryIF

Returns:

scientific data type

setTrajectoryInfo

public void setTrajectoryInfo(SingleTrajectoryObsDataset.Config trajConfig)
                       throws java.io.IOException

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:

java.lang.IllegalArgumentException - if units of time, latitude, longitude, or altitude variables are not as required.

java.lang.IllegalStateException - if this method has already been called.

java.io.IOException

getMetersConversionFactor

protected static double getMetersConversionFactor(java.lang.String unitsString)
                                           throws java.lang.Exception

Throws:

java.lang.Exception

setStartDate

protected void setStartDate()

Specified by:

setStartDate in class TypedDatasetImpl

setEndDate

protected void setEndDate()

Specified by:

setEndDate in class TypedDatasetImpl

setBoundingBox

protected void setBoundingBox()

Specified by:

setBoundingBox in class TypedDatasetImpl

getTrajectoryIds

public java.util.List getTrajectoryIds()

Description copied from interface: TrajectoryObsDataset

Get a list of String IDs for the available trajectories.

Specified by:

getTrajectoryIds in interface TrajectoryObsDataset

getTrajectories

public java.util.List getTrajectories()

Description copied from interface: TrajectoryObsDataset

Get trajectories contained in this dataset.

Specified by:

getTrajectories in interface TrajectoryObsDataset

Returns:

List of type TrajectoryObsDatatype.

getTrajectory

public TrajectoryObsDatatype getTrajectory(java.lang.String trajectoryId)

Description copied from interface: TrajectoryObsDataset

Get the named trajectory

Specified by:

getTrajectory in interface TrajectoryObsDataset

getDetailInfo

public java.lang.String getDetailInfo()

Description copied from interface: TypedDataset

Show debug / underlying implementation details

Specified by:

getDetailInfo in interface TypedDataset

Overrides:

getDetailInfo in class TypedDatasetImpl

syncExtend

public boolean syncExtend()

Description copied from interface: TrajectoryObsDataset

Syncronize with the underlying dataset if it has been extended in a way that is compatible with the existing structural metadata (for instance, if the unlimited dimension has grown). Return true if syncronization was needed and sucessful. Otherwise, return false. NOTE: For now, assuming growth of the unlimited dimension only allowed change. To get range for new extent only, use getRange( oldNumPoints + 1, newNumPoints, 1)

Specified by:

syncExtend in interface TrajectoryObsDataset

Returns:

true if syncronization was needed and sucessful, otherwise false.