Gets the derivative of this transform at a point.
[Visual Basic]
Function Derivative( _
ByVal cp As CoordinatePoint _
) As Matrix
Missing <returns> documentation for M:Geotools.CoordinateTransformations.IMathTransform.Derivative(Geotools.Positioning.CoordinatePoint)
If the transform does not have a well-defined derivative at the point, then this function should fail in the usual way for the DCP. The derivative is the matrix of the non-translating portion of the approximate affine map at the point. The matrix will have dimensions corresponding to the source and target coordinate systems. If the input dimension is M, and the output dimension is N, then the matrix will have size [M][N]. The elements of the matrix {elt[n][m] : n=0..(N-1)} form a vector in the output space which is parallel to the displacement caused by a small change in the m'th ordinate in the input space.
IMathTransform Interface | IMathTransform Members | Geotools.CoordinateTransformations Namespace