Package org.geotools.coverage.io.netcdf.crs

Class NetCDFProjection

Object

NetCDFProjection

public class NetCDFProjection
extends Object

Class used to properly setup NetCDF CF Projection parameters. Given a known OGC Projection, it will take care of remapping the Projection's parameters to NetCDF CF GridMapping parameters if supported.

See Also:

• NetCDF CF, Appendix F: Grid Mappings

Field Summary

Fields

Modifier and Type	Field	Description
static final NetCDFProjection	ALBERS_EQUAL_AREA	Currently supported NetCDF projections.
static final NetCDFProjection	LAMBERT_AZIMUTHAL_EQUAL_AREA
static final NetCDFProjection	LAMBERT_CONFORMAL_CONIC_1SP
static final NetCDFProjection	LAMBERT_CONFORMAL_CONIC_2SP
static final NetCDFProjection	MERCATOR_1SP
static final NetCDFProjection	MERCATOR_2SP
static final NetCDFProjection	ORTHOGRAPHIC
static final String	PARAMS_SEPARATOR
static final NetCDFProjection	POLAR_STEREOGRAPHIC
static final NetCDFProjection	ROTATED_POLE
static final NetCDFProjection	STEREOGRAPHIC
static final NetCDFProjection	TRANSVERSE_MERCATOR

Constructor Summary

Constructors

Constructor	Description
NetCDFProjection(String projectionName, String ogcName, Map<String,String> parametersMapping)	NetCDF CF projection constructor

Method Summary

Modifier and Type	Method	Description
String	getName()	Return the NetCDF CF GridMapping name
ParameterValueGroup	getNetcdfParameters(ParameterValueGroup ogcParameters)	Subclasses override this if they wish to adjust OGC parameters before they are written to NetCDF.
String	getOGCName()	Return the OGC/GeoTools projection name
ParameterValueGroup	getOgcParameters(ParameterValueGroup netcdfParameters)	Subclasses override this if they wish to adjust OGC parameters after they are read from NetCDF.
Map<String,String>	getParameters()	Returns the underlying unmodifiable Referencing to NetCDF parameters mapping.
static NetCDFProjection	getSupportedProjection(String projectionName)	Get a NetCDF Projection definition referred by name
static CoordinateReferenceSystem	lookForDatasetCRS(NetcdfDataset dataset)	Look for a dataset global CoordinateReferenceSystem definition provided through a spatial_ref global attribute.
static CoordinateReferenceSystem	lookForVariableCRS(NetcdfDataset dataset, CoordinateReferenceSystem defaultCrs)
static CoordinateReferenceSystem	lookForVariableCRS(NetcdfDataset dataset, CoordinateReferenceSystem defaultCrs, Map<String,Object> crsProperties)	Look for a CoordinateReferenceSystem defined into a variable
static CoordinateReferenceSystem	lookupForCustomEpsg(CoordinateReferenceSystem crs)	Check if any custom EPSG maps the provided crs and return that one
static CoordinateReferenceSystem	parseProjection(NetcdfDataset dataset)	Look for a SPATIAL_REF global attribute and parsing it (as WKT) to setup a CoordinateReferenceSystem
static CoordinateReferenceSystem	parseProjection(Variable var)	Extract the georeferencing projection information from the specified variable and setup a CoordinateReferenceSystem instance
static CoordinateReferenceSystem	parseProjection(Variable var, NetCDFProjection.CRSParser crsParser)	Extract the georeferencing projection information from the specified variable and setup a CoordinateReferenceSystem instance
static CoordinateReferenceSystem	parseProjection(Variable var, NetCDFProjection.CRSParser crsParser, Map<String,Object> crsProperties)	Extract the georeferencing projection information from the specified variable and setup a CoordinateReferenceSystem instance

Methods inherited from class Object

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

Field Details

PARAMS_SEPARATOR

public static final String PARAMS_SEPARATOR

See Also:

• Constant Field Values

ALBERS_EQUAL_AREA

public static final NetCDFProjection ALBERS_EQUAL_AREA

Currently supported NetCDF projections. Check the CF Document

See Also:

• NetCDF CF, Appendix F: Grid Mappings

MERCATOR_1SP

public static final NetCDFProjection MERCATOR_1SP

MERCATOR_2SP

public static final NetCDFProjection MERCATOR_2SP

LAMBERT_AZIMUTHAL_EQUAL_AREA

public static final NetCDFProjection LAMBERT_AZIMUTHAL_EQUAL_AREA

TRANSVERSE_MERCATOR

public static final NetCDFProjection TRANSVERSE_MERCATOR

ORTHOGRAPHIC

public static final NetCDFProjection ORTHOGRAPHIC

POLAR_STEREOGRAPHIC

public static final NetCDFProjection POLAR_STEREOGRAPHIC

STEREOGRAPHIC

public static final NetCDFProjection STEREOGRAPHIC

LAMBERT_CONFORMAL_CONIC_1SP

public static final NetCDFProjection LAMBERT_CONFORMAL_CONIC_1SP

LAMBERT_CONFORMAL_CONIC_2SP

public static final NetCDFProjection LAMBERT_CONFORMAL_CONIC_2SP

ROTATED_POLE

public static final NetCDFProjection ROTATED_POLE

Constructor Details

NetCDFProjection

public NetCDFProjection(String projectionName,
 String ogcName,
 Map<String,String> parametersMapping)

NetCDF CF projection constructor

Method Details

getParameters

public Map<String,String> getParameters()

Returns the underlying unmodifiable Referencing to NetCDF parameters mapping.

getName

public String getName()

Return the NetCDF CF GridMapping name

getOGCName

public String getOGCName()

Return the OGC/GeoTools projection name

getOgcParameters

public ParameterValueGroup getOgcParameters(ParameterValueGroup netcdfParameters)

Subclasses override this if they wish to adjust OGC parameters after they are read from NetCDF. This is the inverse of getNetcdfParameters(ParameterValueGroup).

Parameters:

netcdfParameters - parameter values read from NetCDF

Returns:

parameter values used for OGC projection

getNetcdfParameters

public ParameterValueGroup getNetcdfParameters(ParameterValueGroup ogcParameters)

Subclasses override this if they wish to adjust OGC parameters before they are written to NetCDF. This is the inverse of getOgcParameters(ParameterValueGroup).

Parameters:

ogcParameters - parameter values used for OGC projection

Returns:

parameter values written to NetCDF

getSupportedProjection

public static NetCDFProjection getSupportedProjection(String projectionName)

Get a NetCDF Projection definition referred by name

parseProjection

public static CoordinateReferenceSystem parseProjection(Variable var)
                                                 throws FactoryException

Extract the georeferencing projection information from the specified variable and setup a CoordinateReferenceSystem instance

Throws:

FactoryException

parseProjection

public static CoordinateReferenceSystem parseProjection(Variable var,
 NetCDFProjection.CRSParser crsParser)
                                                 throws FactoryException

Extract the georeferencing projection information from the specified variable and setup a CoordinateReferenceSystem instance

Throws:

FactoryException

parseProjection

public static CoordinateReferenceSystem parseProjection(Variable var,
 NetCDFProjection.CRSParser crsParser,
 Map<String,Object> crsProperties)
                                                 throws FactoryException

Extract the georeferencing projection information from the specified variable and setup a CoordinateReferenceSystem instance

Throws:

FactoryException

parseProjection

public static CoordinateReferenceSystem parseProjection(NetcdfDataset dataset)

Look for a SPATIAL_REF global attribute and parsing it (as WKT) to setup a CoordinateReferenceSystem

lookupForCustomEpsg

public static CoordinateReferenceSystem lookupForCustomEpsg(CoordinateReferenceSystem crs)
                                                     throws FactoryException

Check if any custom EPSG maps the provided crs and return that one

Throws:

FactoryException

lookForVariableCRS

public static CoordinateReferenceSystem lookForVariableCRS(NetcdfDataset dataset,
 CoordinateReferenceSystem defaultCrs)
                                                    throws FactoryException

Throws:

FactoryException

lookForVariableCRS

public static CoordinateReferenceSystem lookForVariableCRS(NetcdfDataset dataset,
 CoordinateReferenceSystem defaultCrs,
 Map<String,Object> crsProperties)
                                                    throws FactoryException

Look for a CoordinateReferenceSystem defined into a variable

Throws:

FactoryException

lookForDatasetCRS

public static CoordinateReferenceSystem lookForDatasetCRS(NetcdfDataset dataset)

Look for a dataset global CoordinateReferenceSystem definition provided through a spatial_ref global attribute.