Practical GIS

Spatial Analysis on Steroids - Using PostGIS

In the last chapter, we did some vector analysis to get meaningful results from our data. We went through the steps of different types of vector analysis technique, and also built models to make our work more convenient. However, the execution of the algorithms still took some time, and you might wonder if there is a more effective way for achieving the same results.

In this chapter, we will explore the PostGIS way of vector analysis, which is faster and more flexible, as spatial operations executed with SQL queries can be saved and reproduced easily. With this approach, we can additionally stay in the realm of our spatial database, which means we do not have to worry about memory layers, temporary ...