Lecture 6 Spatial Analysis Vector and Raster Data

Question 1

Two main methods of spatial analysis of vector data

Answer 1

Buffering-creates a special polygon with a specified distance around a spatial feature
overlay - comparison of two or more thematic layers

Question 2

what are some setbacks of buffering? Types of buffering? 3

Answer 2

• Only applied to a polygon feature

-Arbitrary - based on best guess
causative - based on “a priori” locations
mandated - buffer dimensions based on government agencies’ mandates

Question 3

Name the types of overlay? 3

Answer 3

Point-in-Polygon overlay
Line in Polygon overlay
Polygon on polygon overlay

Question 4

Different spatial analysis tools we can use on polygon on polygon overlay 7 (SCUSE the II)

Answer 4

Intersection
Union
Symmetrical difference
Identify
Clipping
Erasing
Splitting