Area of Use polygons allow developers to create a method for guiding users with the most appropriate coordinate system or transformation for an area based geopolitical bounding polygons that follow the borders of countries and similar areas around the world. These objects can be viewed in the QT dialogues for selecting coordinate system.
This allows more flexible transformation options when working with high accuracy elevation based data.
This allows developers to create an interface for users of Alberta and Saskatchewan land grids to plot layouts of points and lines directly from Dominion Land Survey coordinates in the context of the borders of the individual townships and ranges.
Enables very complicated chains of horizontal and vertical transformations that were not previously possible to execute in one step.