Introduction¶
The TerraPlan module in Gemini Terrain+ includes features for classic landscape analysis. You can run different types of surface analyses, and the result is thematic maps such as sun/shade, slope, and exposure. For these analyses, you need a terrain model of the surface, usually a SOSI map for the area.
Another analysis type is overlay analysis. In the past, transparent maps were placed on top of each other on a light table to see how the data overlapped. Today, this is done computationally in a 3D model.
With overlay analysis, you can combine properties from multiple datasets. This lets you identify areas that have a specific set of properties, that is, areas that satisfy the criteria you define.
In zoning plan contexts, this approach is used to find areas that are suitable for specific purposes, or exposed to specific risks. For example, you can run an overlay analysis between slope maps, exposure maps, and sun/shade to find the areas that are best suited for housing development.
We need a polygon that delimits the area for analysis. In the context of zoning plans, this will typically be the plan area.
Example Collection¶
See the example collection for implementation: