AM-05 - Neighborhoods
- Discuss the role of Voronoi polygons as the dual graph of the Delaunay triangulation
- Explain how Voronoi polygons can be used to define neighborhoods around a set of points
- Outline methods that can be used to establish non-overlapping neighborhoods of similarity in raster datasets
- Create proximity polygons (Thiessen/Voronoi polygons) in point datasets
- Write algorithms to calculate neighborhood statistics (minimum, maximum, focal flow) using a moving window in raster datasets
- Explain how the range of map algebra operations (local, focal, zonal, and global) relate to the concept of neighborhoods
AM-03 - Buffers
This short article introduces the definition of buffer and explains how buffers are created for single or multiple geographic features of different geometric types. It also discusses how buffers are generated differently in vector and raster data models and based on the concept of cost.