Book Image

Mastering Geospatial Analysis with Python

By : Silas Toms, Paul Crickard, Eric van Rees
Book Image

Mastering Geospatial Analysis with Python

By: Silas Toms, Paul Crickard, Eric van Rees

Overview of this book

Python comes with a host of open source libraries and tools that help you work on professional geoprocessing tasks without investing in expensive tools. This book will introduce Python developers, both new and experienced, to a variety of new code libraries that have been developed to perform geospatial analysis, statistical analysis, and data management. This book will use examples and code snippets that will help explain how Python 3 differs from Python 2, and how these new code libraries can be used to solve age-old problems in geospatial analysis. You will begin by understanding what geoprocessing is and explore the tools and libraries that Python 3 offers. You will then learn to use Python code libraries to read and write geospatial data. You will then learn to perform geospatial queries within databases and learn PyQGIS to automate analysis within the QGIS mapping suite. Moving forward, you will explore the newly released ArcGIS API for Python and ArcGIS Online to perform geospatial analysis and create ArcGIS Online web maps. Further, you will deep dive into Python Geospatial web frameworks and learn to create a geospatial REST API.
Table of Contents (23 chapters)
Title Page
Copyright and Credits
Packt Upsell
Geoprocessing with Geodatabases

Working in the Python console

The QGIS Python console is a Python console. You can perform all of your normal Python tasks with the added benefit of having the QGIS libraries added. From the console, you can manipulate GIS data and display it on the screen, or not.

The Python console is located under the Plugins menu on the QGIS toolbar. You can also access it by pressing Ctrl Alt P on the keyboard. The console will usually open in the bottom of the main window. You can undock it by clicking on the title bar (where it says Python Console), holding down the mouse button, and dragging the window to another location on the screen or by clicking the window button at the top-right of the console:

A screenshot of the Python console

The console has buttons for clearing the window, importing GIS and QGIS specific libraries, running the current command (you can press Enter instead of clicking this button), showing the editor, modifying options, and viewing theHelpfiles. The editor launches a simplified...