PostGIS in Action, Second Edition

List of Figures

Chapter 1. What is a spatial database?

Figure 1.1. Pushpin madness!

Figure 1.2. Database with postgis extension installed

Figure 1.3. Basic geometries: a point, a linestring, and a polygon

Figure 1.4. Loading into the geometry data type

Figure 1.5. U.S. Route 1 in Maryland, with three Hardee’s restaurants in the 20-mile buffer, and the 20-mile buffer around the route

Chapter 2. Spatial data types

Figure 2.1. Open and closed linestrings created using the code in listing 2.2. The points that make up the lines are shown as well.

Figure 2.2. A non-simple linestring

Figure 2.3. Triangular polygon

Figure 2.4. Polygon with interior rings (holes)

Figure 2.5. The Seattle area modeled as a polygon with two rings (Lake Washington fills ...