Coordinate Operations affect Geometrical Relationships
The taxonomy for classifying mathematical trans-formations is complex and there are many types:
- isometric, linear, bi-linear, conformal, orthogonal, affine, isomorphic, ...
For SEDRIS, two classifications are sufficient for operations associated with earth referenced spatial reference frames:
- Geometry Preserving Transformations (GPT): That class of conversions/transformations between spatial reference frames that do not distort geometrical relationships.
- Geometry Distorting Transformations (GDT): That class of conversions/transformations between spatial reference frames that distort some geometrical relationships.