Package noaa.coastwatch.util.trans

Class DataProjection

java.lang.Object

noaa.coastwatch.util.MetadataContainer

noaa.coastwatch.util.trans.EarthTransform

noaa.coastwatch.util.trans.EarthTransform2D

noaa.coastwatch.util.trans.DataProjection

All Implemented Interfaces:

Cloneable

public class DataProjection
extends EarthTransform2D

The DataProjection class implements earth transform calculations for data coordinates with explicit latitude and longitude data. The only possible operation is translation from data coordinates to geographic coordinates -- the reverse is not implemented.

Since:

3.1.0

Author:

Peter Hollemans

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DESCRIPTION	Projection description string.

Fields inherited from class noaa.coastwatch.util.trans.EarthTransform

boundaryHandler, dims

Constructor Summary

Constructors

Constructor	Description
DataProjection(DataVariable lat, DataVariable lon)	Constructs a data projection from the specified latitude and longitude data.

Method Summary

Modifier and Type	Method	Description
String	describe()	Gets a string describing the earth transform type.
boolean	equals(Object obj)	Compares the specified object with this data projection for equality.
DataVariable	getLat()	Gets the latitude variable used in this projection.
DataVariable	getLon()	Gets the longitude variable used in this projection.
boolean	isInvertible()	Determines if this transform is invertible.
protected void	transformImpl(DataLocation dataLoc, EarthLocation earthLoc)	Implements the data to geographic transform.
protected void	transformImpl(EarthLocation earthLoc, DataLocation dataLoc)	Implements the geographic to data transform.

Methods inherited from class noaa.coastwatch.util.trans.EarthTransform2D

get2DVersion, getBoundingBox, getWorldAxes, isOrientable, main, setPointTransform, transformToPoint

Methods inherited from class noaa.coastwatch.util.trans.EarthTransform

clone, distance, getBoundaryHandler, getDatum, getDimensions, getResolution, getSpheroid, getSpheroid, getSubset, transform, transform, transform, transform

Methods inherited from class noaa.coastwatch.util.MetadataContainer

getMetadataMap

Methods inherited from class java.lang.Object

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

Field Details

DESCRIPTION

public static final String DESCRIPTION

Projection description string.

See Also:

• Constant Field Values

Constructor Details

DataProjection

public DataProjection(DataVariable lat,
 DataVariable lon)

Constructs a data projection from the specified latitude and longitude data.

Parameters:

lat - a data variable containing latitude data.

lon - a data variable containing longitude data.

Method Details

getLat

public DataVariable getLat()

Gets the latitude variable used in this projection.

getLon

public DataVariable getLon()

Gets the longitude variable used in this projection.

describe

public String describe()

Description copied from class: EarthTransform

Gets a string describing the earth transform type.

Specified by:

describe in class EarthTransform

transformImpl

protected void transformImpl(DataLocation dataLoc,
 EarthLocation earthLoc)

Description copied from class: EarthTransform

Implements the data to geographic transform.

Specified by:

transformImpl in class EarthTransform

See Also:

• EarthTransform.transform(DataLocation,EarthLocation)

transformImpl

protected void transformImpl(EarthLocation earthLoc,
 DataLocation dataLoc)

Description copied from class: EarthTransform

Implements the geographic to data transform.

Specified by:

transformImpl in class EarthTransform

See Also:

• EarthTransform.transform(EarthLocation,DataLocation)

isInvertible

public boolean isInvertible()

Description copied from class: EarthTransform

Determines if this transform is invertible. All transforms should translate from data location to geographic location. But to be invertible, the transform must also translate from geographic location back to data location. This method returns true unless overridden by the child class.

Overrides:

isInvertible in class EarthTransform

Returns:

true if this transform is invertible or false if not.

equals

public boolean equals(Object obj)

Compares the specified object with this data projection for equality. The latitudes and longitudes of the two data projections are compared value by value.

Overrides:

equals in class Object

Parameters:

obj - the object to be compared for equality.

Returns:

true if the data projections are equivalent, or false if not.