Based on traditional coordinate transformation methods and according to their dimension, a classification has been made which includes these methods in addition to a combination of some of them.
3 groups of coordinate transformations are presented:
2D: 2-dimensional transformations among which the traditional methods of Helmert, Affine and Projective are distinguished plus a simple translation of X and Y coordinates.
3D: 3-dimensional transformations including translations in X, Y, Z and the classical 7 parameter Helmert.
2D + 1D: 3-dimensional transformations using 4-parameter Helmert 2D for X,Y plus translation in Z or translation in Z and slopes X and Y.
The operation is similar for each of the methods, two modes being distinguished to define the transformation:
By Points: Entering a series of pairs of source and target coordinates, in 2D or 3D, and calculating the equation system of the method selected.
By Parameters: Entering the values of the transformation equation parameters directly.
To create a new transformation you have to click the button New…. Similarly, you can upload an already existing one by clicking the option Open…
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