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

Integrating SQL with QGIS

Earlier chapters focusing on SQL and geospatial analysis have expanded your geospatial vocabulary and introduced SQL. You now have access to a host of new tools to explore location intelligence. This final chapter will serve as a segue into an open source workflow for additional learning and insights. The ability to access large datasets and explore them with the expanded functionality of plugins within the QGIS platform, combined with PostGIS and the dynamic spatial query language, is addressed with a higher level of acuity. I suggest downloading the Long-Term Release (LTR) for the most stable QGIS version: https://www.qgis.org/en/site/forusers/download.html.

In this chapter, you will learn to explore SQL queries within DB Manager in QGIS and you will also learn how to import and configure raster datasets along with calculating raster functions.

In this chapter, we’ll cover the following topics:

  • Understanding the SQL query builder in...