Book Image

Geospatial Analysis with SQL

By : Bonny P McClain
Book Image

Geospatial Analysis with SQL

By: Bonny P McClain

Overview of this book

Geospatial analysis is industry agnostic and a powerful tool for answering location questions. Combined with the power of SQL, developers and analysts worldwide rely on database integration to solve real-world spatial problems. This book introduces skills to help you detect and quantify patterns in datasets through data exploration, visualization, data engineering, and the application of analysis and spatial techniques. You will begin by exploring the fundamentals of geospatial analysis where you’ll learn about the importance of geospatial analysis and how location information enhances data exploration. Walter Tobler’s second law of geography states, “the phenomenon external to a geographic area of interest affects what goes on inside.” This quote will be the framework of the geospatial questions we will explore. You’ll then observe the framework of geospatial analysis using SQL while learning to create spatial databases and SQL queries and functions. By the end of this book, you will have an expanded toolbox of analytic skills such as PostGIS and QGIS to explore data questions and analysis of spatial information.
Table of Contents (13 chapters)
Free Chapter
1
Section 1: Getting Started with Geospatial Analytics
6
Section 2: SQL for Spatial Analytics

Analyzing and Understanding Spatial Algorithms

SQL is a powerful tool not only for data exploration but also visualization and subsequent queries. Once you begin writing SQL, you should notice a pattern to writing successful queries. In this chapter, we will begin refining and expanding how we use SQL, as well as building data questions as we join data tables and learn how to run queries in QGIS as well.

The next steps include interfacing with QGIS and running geospatial queries in a GUI that will allow advanced filtering and layer styling, across databases.

This chapter will cover importing a variety of file types into databases along with connecting to databases and executing SQL queries in both pgAdmin and QGIS. We will also cover Spatial joins and how to visualize the output.

Following are the skills introduced:

  • Developing knowledge about geographic space
  • Connecting to databases and executing SQL queries
  • Exploring pattern detection tools