Book Image

Python Geospatial Development

By : Erik Westra
Book Image

Python Geospatial Development

By: Erik Westra

Overview of this book

<p>Open Source GIS (Geographic Information System) is a growing area with the explosion of applications such as Google Maps, Google Earth, and GPS. The GIS market is growing rapidly and as a Python developer you will find yourself either wanting grounding in GIS or needing to get up to speed to do your job. In today's location-aware world, all commercial Python developers can benefit from an understanding of GIS development gained using this book.</p> <p>Working with geo-spatial data can get complicated because you are dealing with mathematical models of the Earth's surface. Since Python is a powerful programming language with high-level toolkits, it is well suited to GIS development. will familiarize you with the Python tools required for geo-spatial development such as Mapnik, which is used for mapping in Python. It introduces GIS at the basic level with a clear, detailed walkthrough of the key GIS concepts such as location, distance, units, projections, datums, and GIS data formats. We then examine a number of Python libraries and combine these with geo-spatial data to accomplish a variety of tasks. The book provides an in-depth look at the concept of storing spatial data in a database and how you can use spatial databases as tools to solve a variety of geo-spatial problems. <br /><br />It goes into the details of generating maps using the Mapnik map-rendering toolkit, and helps you to build a sophisticated web-based geo-spatial map-editing application using GeoDjango, Mapnik, and PostGIS. By the end of the book, you will be able to integrate spatial features into your applications and build a complete mapping application from scratch.</p>
Table of Contents (19 chapters)
Python Geospatial Development
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 2. GIS

The term GIS generally refers to Geographical Information Systems, which are complex computer systems for storing, manipulating, and displaying geo-spatial data. GIS can also be used to refer to the more general Geographic Information Sciences, which is the science surrounding the use of GIS systems.

In this chapter, we will look at:

  • The central GIS concepts you will have to become familiar with: location, distance, units, projections, coordinate systems, datums and shapes

  • Some of the major data formats you are likely to encounter when working with geo-spatial data

  • Some of the processes involved in working directly with geo-spatial data