| java.lang.Object
 org.geotools.referencing.operation.builder.MathTransformBuilder
org.geotools.referencing.operation.builder.BursaWolfTransformBuilder
| BursaWolfTransformBuilder | | public class BursaWolfTransformBuilder extends MathTransformBuilder (Code) | | Builds
setup as BursaWolf transformation from a list of
.
The calculation uses least square method. Calculated parameters can be
used for following operations:
The equations: X = q * R * x + T , Where X
is the Matrix of destination points, q is the scale, R is the rotation
Matrix, x is the Matrix of source points and T is matrix of translation.
Expressing the errors, we get this: Err = A * Dx + l where
Err is the Error Matrix, A is Matrix of derivations, Dx is Matrix of
difference changes of 7 parameters, and l is value of DX, DY, DZ for
calculated from approximate values. Using the least square method to
minimalize the errors we get this result:
Dx = (ATA)-1 ATl
since:
2.4
version:
$Id: BursaWolfTransformBuilder.java 24925 2007-03-27 20:12:08Z jgarnett $
author:
Jan Jezek |
| Method Summary | |
| protected MathTransform | computeMathTransform()
Returns MathtTransform setup as BursaWolf transformation. | | protected GeneralMatrix | getA()
Glues the submatrix of derivations into the A matrix. | | public BursaWolfParameters | getBursaWolfParameters(GeodeticDatum Datum)
Returns Bursa Wolf Transformation parameters.
Parameters:
Datum - The target datum for this parameters. | | public Class | getCoordinateSystemType()
Returns the required coordinate system type, which is
. | | protected GeneralMatrix | getDRalfa()
Generates partial derivative with respect to alfa. | | protected GeneralMatrix | getDRbeta()
Generates partial derivative with respect to beta. | | protected GeneralMatrix | getDRgamma()
Generates partial derivative with respect to gamma. | | public int | getDimension()
Returns the dimension for
BursaWolfTransformBuilder.getSourceCRS source and
BursaWolfTransformBuilder.getTargetCRS target CRS, which is 2. | | protected GeneralMatrix | getDq()
Generates partial derivative in q (scale factor). | | public GeneralMatrix | getDxMatrix()
Method that claculates the parameters by iteration. | | public int | getMinimumPointCount()
Returns the minimum number of points required by this builder,
which is 3. | | protected double[] | getParameters()
Returns array of doubles of transformation parameters (dx, dy,
dz, ex, ey, ez, scale). | | protected GeneralMatrix | getRalfa()
Generates rotation matrix around X axis. | | protected GeneralMatrix | getRbeta()
Generates rotation matrix around Y axis. | | protected GeneralMatrix | getRgamma()
Generates rotation matrix around Z axis. | | protected GeneralMatrix | getX()
Fills the x matrix by coordinates of destination points. | | protected GeneralMatrix | getl()
Calculates the matrix of errors from aproximate values of
prameters. | | protected GeneralMatrix | getx()
Fills the x matrix by coordinates of source points. | | public void | setTargetGeodeticDatum(GeodeticDatum gd)
| | protected GeneralMatrix | specialMul(GeneralMatrix R, GeneralMatrix x)
|
| BursaWolfTransformBuilder | | public BursaWolfTransformBuilder(List vectors) throws MismatchedSizeException, MismatchedDimensionException, MismatchedReferenceSystemException(Code) | | Creates a BursaWolfTransformBuilder.
Parameters:
vectors - list of |
| computeMathTransform | | protected MathTransform computeMathTransform() throws FactoryException(Code) | | Returns MathtTransform setup as BursaWolf transformation.
calculated MathTransform
throws:
FactoryException - when the size of source and destination pointis not the same or if the number of points is too small todefine such transformation. |
| getA | | protected GeneralMatrix getA()(Code) | | Glues the submatrix of derivations into the A matrix.
A mtarix |
| getBursaWolfParameters | | public BursaWolfParameters getBursaWolfParameters(GeodeticDatum Datum)(Code) | | Returns Bursa Wolf Transformation parameters.
Parameters:
Datum - The target datum for this parameters. parameters the BursaWolfParameters |
| getCoordinateSystemType | | public Class getCoordinateSystemType()(Code) | | Returns the required coordinate system type, which is
.
coordinate system type |
| getDRalfa | | protected GeneralMatrix getDRalfa()(Code) | | Generates partial derivative with respect to alfa.
Matrix, that represents partial derivation of rotation Matrixwith respect to alfa. |
| getDRbeta | | protected GeneralMatrix getDRbeta()(Code) | | Generates partial derivative with respect to beta.
Matrix, that represents partial derivation of rotation Matrixwith respect to beta. |
| getDRgamma | | protected GeneralMatrix getDRgamma()(Code) | | Generates partial derivative with respect to gamma.
Matrix, that represents partial derivation of rotation Matrixwith respect to gamma. |
| getDq | | protected GeneralMatrix getDq()(Code) | | Generates partial derivative in q (scale factor).
rotation Matrix. |
| getDxMatrix | | public GeneralMatrix getDxMatrix()(Code) | | Method that claculates the parameters by iteration. The
tolarance is set to 1 10-8 and max �number of steps is set
to 20.
Matrix of parameters (dx, dy, dz, ex, ey, ez, scale). |
| getMinimumPointCount | | public int getMinimumPointCount()(Code) | | Returns the minimum number of points required by this builder,
which is 3.
the minimum number of points required by this builder which is3. |
| getParameters | | protected double[] getParameters()(Code) | | Returns array of doubles of transformation parameters (dx, dy,
dz, ex, ey, ez, scale).
array of doubles of transformation parameters (dx, dy, dz, ex,ey, ez, scale). |
| getRalfa | | protected GeneralMatrix getRalfa()(Code) | | Generates rotation matrix around X axis.
rotation Matrix |
| getRbeta | | protected GeneralMatrix getRbeta()(Code) | | Generates rotation matrix around Y axis.
rotation Matrix. |
| getRgamma | | protected GeneralMatrix getRgamma()(Code) | | Generates rotation matrix around Z axis.
rotation Matrix. |
| getX | | protected GeneralMatrix getX()(Code) | | Fills the x matrix by coordinates of destination points.
the X matrix |
| getl | | protected GeneralMatrix getl()(Code) | | Calculates the matrix of errors from aproximate values of
prameters.
the l matrix. |
| getx | | protected GeneralMatrix getx()(Code) | | Fills the x matrix by coordinates of source points.
x matrix. |
| setTargetGeodeticDatum | | public void setTargetGeodeticDatum(GeodeticDatum gd)(Code) | | |
| Fields inherited from org.geotools.referencing.operation.builder.MathTransformBuilder | final protected MathTransformFactory mtFactory(Code)(Java Doc)
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