Proximity Analysis
In practical applications, we often encounter distance-related issues such as:
- Which residential area is closest to a landslide site?
- What are the two nearest supermarkets within 2 kilometers from the National Stadium?
- What are the coverage ranges of mobile signal towers in decreasing order of signal strength?
- How many food processing plants are located within 1000 meters of a polluted river?
- With football stadiums and hotels stored in separate layers, what's the distance from any hotel to the nearest stadium in Switzerland?
Most of these real-world problems involve spatial positions and distances. Proximity analysis provides functions to determine spatial relationships between features, including buffer analysis, Thiessen polygon generation, distance measurement, spatial query, and other capabilities to solve such problems.
This chapter will introduce you to the following topics:
- Thiessen Polygon Construction Principles
- Construct Thiessen Polygon
- Thiessen Polygon Application Examples
- Distance Measurement Principles
- Measure Distance
- Distance Measurement Application Examples
- Buffer Analysis Principles
- Buffer Analysis Application Examples
- Proximity Analysis Solutions