Subregions

The basic building blocks of the UNDO tool are called subregions. The sum of all subregions in an UNDO tool’s project will be equivalent to the total development area. A subregion represents the collective sum of portions of land within the development area. Subregions can represent a mixture of land categories (e.g. public open space, road reserve and urban residential) or they can represent a single land category. There is no limit to the number or size of the subregions that can be entered into an UNDO tool project.

Subregions are configured in the pre-modelling phase of an UNDO project. There are some basic rules and guidance recommended for dividing a development into subregions – these are outlined in Appendix A: A guide to configuring subregions for the UNDO tool.