Object
- Formattable
- - AbstractMathTransform
  - - MolodenskiTransform

All Implemented Interfaces:

Serializable, MathTransform
```
public class MolodenskiTransform
extends AbstractMathTransform
implements Serializable
```
Two- or three-dimensional datum shift using the (potentially abridged) Molodensky transformation. The Molodensky transformation (EPSG code 9604) and the abridged Molodensky transformation (EPSG code 9605) transform two or three dimensional geographic points from one geographic coordinate reference system to another (a datum shift), using three shift parameters (delta X, delta Y, delta Z) and the difference between the semi-major axis and flattenings of the two ellipsoids.
Unlike the Bursa-Wolf 3 parameter method (which acts on geocentric coordinates), this transformation can be performed directly on geographic coordinates.
References:
- Defense Mapping Agency (DMA), Datums, Ellipsoids, Grids and Grid Reference Systems, Technical Manual 8358.1. Available from http://earth-info.nga.mil/GandG/pubs.html
- Defense Mapping Agency (DMA), The Universal Grids: Universal Transverse Mercator (UTM) and Universal Polar Stereographic (UPS), Fairfax VA, Technical Manual 8358.2. Available from http://earth-info.nga.mil/GandG/pubs.html
- National Imagery and Mapping Agency (NIMA), Department of Defense World Geodetic System 1984, Technical Report 8350.2. Available from http://earth-info.nga.mil/GandG/pubs.html
- "Coordinate Conversions and Transformations including Formulas", EPSG Guidence Note Number 7, Version 19.
Since:

2.1

Author:

Rueben Schulz, Martin Desruisseaux

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`MolodenskiTransform.Provider`	The provider for `MolodenskiTransform`.
`static class`	`MolodenskiTransform.ProviderAbridged`	The provider for abridged `MolodenskiTransform`.

Nested classes/interfaces inherited from class AbstractMathTransform
AbstractMathTransform.Inverse

Field Summary
- Fields inherited from class Formattable
  SINGLE_LINE

Constructor Summary

Constructors
Constructor	Description
`MolodenskiTransform(boolean abridged, double a, double b, boolean source3D, double ta, double tb, boolean target3D, double dx, double dy, double dz)`	Constructs a Molodenski transform from the specified parameters.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object o)`	Compares the specified object with this math transform for equality.
`ParameterDescriptorGroup`	`getParameterDescriptors()`	Returns the parameter descriptors for this math transform.
`ParameterValueGroup`	`getParameterValues()`	Returns the parameters for this math transform.
`int`	`getSourceDimensions()`	Gets the dimension of input points.
`int`	`getTargetDimensions()`	Gets the dimension of output points.
`int`	`hashCode()`	Returns a hash value for this transform.
`MathTransform`	`inverse()`	Creates the inverse transform of this object.
`boolean`	`isIdentity()`	Returns `true` if this transform is the identity one.
`void`	`transform(double[] srcPts, int srcOff, double[] dstPts, int dstOff, int numPts)`	Transforms a list of coordinate point ordinal values.
`void`	`transform(float[] srcPts, int srcOff, float[] dstPts, int dstOff, int numPts)`	Transforms a list of coordinate point ordinal values.

Methods inherited from class AbstractMathTransform
createTransformedShape, derivative, derivative, ensureNonNull, formatWKT, getName, needCopy, normalizeAngle, rollLongitude, transform, transform, transform, transform

Methods inherited from class Formattable
cleanupThreadLocals, toString, toWKT, toWKT, toWKT, toWKT

Methods inherited from class Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface MathTransform
toWKT

- Constructor Detail
  - MolodenskiTransform
```
public MolodenskiTransform(boolean abridged,
                           double a,
                           double b,
                           boolean source3D,
                           double ta,
                           double tb,
                           boolean target3D,
                           double dx,
                           double dy,
                           double dz)
```
    Constructs a Molodenski transform from the specified parameters.
    
    Parameters:
    
    abridged - true for the abridged formula, or false for the complete one.
    
    a - The source semi-major axis length in meters.
    
    b - The source semi-minor axis length in meters.
    
    source3D - true if the source has a height.
    
    ta - The target semi-major axis length in meters.
    
    tb - The target semi-minor axis length in meters.
    
    target3D - true if the target has a height.
    
    dx - The x translation in meters.
    
    dy - The y translation in meters.
    
    dz - The z translation in meters.
- Method Detail
  - getParameterDescriptors
```
public ParameterDescriptorGroup getParameterDescriptors()
```
    Returns the parameter descriptors for this math transform.
    
    Overrides:
    
    getParameterDescriptors in class AbstractMathTransform
    
    Returns:
    
    The parameter descriptors for this math transform, or null.
    
    See Also:
    
    OperationMethod.getParameters()
  - getParameterValues
```
public ParameterValueGroup getParameterValues()
```
    Returns the parameters for this math transform.
    
    Overrides:
    
    getParameterValues in class AbstractMathTransform
    
    Returns:
    
    The parameters for this math transform.
    
    See Also:
    
    Operation.getParameterValues()
  - getSourceDimensions
```
public int getSourceDimensions()
```
    Gets the dimension of input points.
    
    Specified by:
    
    getSourceDimensions in interface MathTransform
    
    Specified by:
    
    getSourceDimensions in class AbstractMathTransform
    
    Returns:
    
    The dimension of input points.
  - getTargetDimensions
```
public final int getTargetDimensions()
```
    Gets the dimension of output points.
    
    Specified by:
    
    getTargetDimensions in interface MathTransform
    
    Specified by:
    
    getTargetDimensions in class AbstractMathTransform
    
    Returns:
    
    The dimension of output points.
  - transform
```
public void transform(double[] srcPts,
                      int srcOff,
                      double[] dstPts,
                      int dstOff,
                      int numPts)
```
    Transforms a list of coordinate point ordinal values. This method is provided for efficiently transforming many points. The supplied array of ordinal values will contain packed ordinal values. For example, if the source dimension is 3, then the ordinals will be packed in this order:
    (x₀,y₀,z₀, x₁,y₁,z₁ ...).
    
    Specified by:
    
    transform in interface MathTransform
    
    Parameters:
    
    srcPts - the array containing the source point coordinates.
    
    srcOff - the offset to the first point to be transformed in the source array.
    
    dstPts - the array into which the transformed point coordinates are returned. May be the same than srcPts.
    
    dstOff - the offset to the location of the first transformed point that is stored in the destination array.
    
    numPts - the number of point objects to be transformed.
  - transform
```
public void transform(float[] srcPts,
                      int srcOff,
                      float[] dstPts,
                      int dstOff,
                      int numPts)
```
    Transforms a list of coordinate point ordinal values. This method is provided for efficiently transforming many points. The supplied array of ordinal values will contain packed ordinal values. For example, if the source dimension is 3, then the ordinals will be packed in this order:
    (x₀,y₀,z₀, x₁,y₁,z₁ ...).
    
    Specified by:
    
    transform in interface MathTransform
    
    Overrides:
    
    transform in class AbstractMathTransform
    
    Parameters:
    
    srcPts - the array containing the source point coordinates.
    
    srcOff - the offset to the first point to be transformed in the source array.
    
    dstPts - the array into which the transformed point coordinates are returned. May be the same than srcPts.
    
    dstOff - the offset to the location of the first transformed point that is stored in the destination array.
    
    numPts - the number of point objects to be transformed.
  - isIdentity
```
public boolean isIdentity()
```
    Returns true if this transform is the identity one. This transform is considered identity (minus rounding errors) if:
    
    the X,Y,Z shift are zero
    the source and target axis length are the same
    the input and output dimension are the same.
    Specified by:
    
    isIdentity in interface MathTransform
    
    Overrides:
    
    isIdentity in class AbstractMathTransform
    
    Returns:
    
    true if this MathTransform is an identity transform; false otherwise.
    
    Since:
    
    2.5
  - inverse
```
public MathTransform inverse()
```
    Creates the inverse transform of this object.
    
    Specified by:
    
    inverse in interface MathTransform
    
    Overrides:
    
    inverse in class AbstractMathTransform
    
    Returns:
    
    The inverse transform.
  - equals
```
public boolean equals(Object o)
```
    Description copied from class: AbstractMathTransform
    
    Compares the specified object with this math transform for equality. The default implementation checks if object is an instance of the same class than this and use the same parameter descriptor. Subclasses should override this method in order to compare internal fields.
    
    Overrides:
    
    equals in class AbstractMathTransform
    
    Parameters:
    
    o - The object to compare with this transform.
    
    Returns:
    
    true if the given object is a transform of the same class and if, given identical source position, the transformed position would be the equals.
  - hashCode
```
public int hashCode()
```
    Description copied from class: AbstractMathTransform
    
    Returns a hash value for this transform.
    
    Overrides:
    
    hashCode in class AbstractMathTransform

Class MolodenskiTransform

Nested Class Summary

Nested classes/interfaces inherited from class AbstractMathTransform

Field Summary

Fields inherited from class Formattable

Constructor Summary

Method Summary

Methods inherited from class AbstractMathTransform

Methods inherited from class Formattable

Methods inherited from class Object

Methods inherited from interface MathTransform

Constructor Detail

MolodenskiTransform

Method Detail

getParameterDescriptors

getParameterValues

getSourceDimensions

getTargetDimensions

transform

transform

isIdentity

inverse

equals

hashCode