org.geotoolkit.referencing.operation.provider
Class NTv2

Object
  FormattableObject
      AbstractIdentifiedObject
          DefaultOperationMethod
              MathTransformProvider
                  NTv2

All Implemented Interfaces:

Serializable, Deprecable, LenientComparable, Formattable, IdentifiedObject, OperationMethod

public class NTv2
extends MathTransformProvider

The provider for "National Transformation" version 2 (ESPG:9615). The math transform implementations instantiated by this provider may be any of the following classes:

• NTv2Transform

The following table summarizes the parameters recognized by this provider. For a more detailed parameter list, see the PARAMETERS constant.

Operation name: NTv2

Parameter name	Default value
Latitude and longitude difference file

Grid data
This transform requires data that are not bundled by default with Geotk. Run the geotk-setup module for downloading and installing the grid data.

Since:

3.12

Version:

3.20

Author:

Simon Reynard (Geomatys), Martin Desruisseaux (Geomatys)

See Also:

Geotk coordinate operations matrix, Serialized Form

Module:

referencing/geotk-referencing (download)

View source code for this class

Field Summary

static ParameterDescriptor<String>	DIFFERENCE_FILE Deprecated. Invoke PARAMETERS.descriptor(String) instead.
static ParameterDescriptorGroup	PARAMETERS The group of all parameters expected by this coordinate operation.

Fields inherited from class DefaultOperationMethod

sourceDimension, targetDimension

Fields inherited from interface OperationMethod

FORMULA_KEY

Fields inherited from interface IdentifiedObject

ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Constructor Summary

NTv2()
Constructs a provider.

Method Summary

protected MathTransform	createMathTransform(ParameterValueGroup values) Creates a math transform from the specified group of parameter values.
Class<Transformation>	getOperationType() Returns the operation type.

Methods inherited from class MathTransformProvider

ensureValidValues, formatWKT

Methods inherited from class DefaultOperationMethod

checkDimensions, computeHashCode, equals, getFormula, getParameters, getSourceDimensions, getTargetDimensions

Methods inherited from class AbstractIdentifiedObject

equals, getAlias, getIdentifier, getIdentifiers, getName, getName, getRemarks, hashCode, isDeprecated, nameMatches

Methods inherited from class FormattableObject

print, toString, toWKT, toWKT

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface IdentifiedObject

getAlias, getIdentifiers, getName, getRemarks, toWKT

Field Detail

DIFFERENCE_FILE

@Deprecated
public static final ParameterDescriptor<String> DIFFERENCE_FILE

Deprecated. Invoke PARAMETERS.descriptor(String) instead.

The operation parameter descriptor for the Latitude and longitude difference file parameter value. The file extension is typically ".gsb". There is no default value.

PARAMETERS

public static final ParameterDescriptorGroup PARAMETERS

The group of all parameters expected by this coordinate operation. The following table lists the operation names and the parameters recognized by Geotk. Note that the file extension for the parameter is typically ".gsb".

Name:	EPSG:	NTv2
Identifier:	EPSG:	9615

Name:

EPSG:

Latitude and longitude difference file

Type:	String
Obligation:	mandatory

Constructor Detail

NTv2

public NTv2()

Constructs a provider.

Method Detail

getOperationType

public Class<Transformation> getOperationType()

Returns the operation type.

Overrides:

getOperationType in class MathTransformProvider

Returns:

The GeoAPI interface implemented by this operation.

createMathTransform

protected MathTransform createMathTransform(ParameterValueGroup values)
                                     throws FactoryException

Creates a math transform from the specified group of parameter values.

Specified by:

createMathTransform in class MathTransformProvider

Parameters:

values - The group of parameter values.

Returns:

The created math transform.

Throws:

FactoryException - If the grid files can not be loaded.