Building Mapping Applications with QGIS.
- 1st ed.
- 1 online resource (299 pages)
Intro -- Building Mapping Applications with QGIS -- Table of Contents -- Building Mapping Applications with QGIS -- Credits -- About the Author -- About the Reviewers -- www.PacktPub.com -- Support files, eBooks, discount offers, and more -- Why subscribe? -- Free access for Packt account holders -- Preface -- What this book covers -- What you need for this book -- Who this book is for -- Conventions -- Reader feedback -- Customer support -- Downloading the example code -- Downloading the color images of this book -- Errata -- Piracy -- Questions -- 1. Getting Started with QGIS -- About QGIS -- Installing and running QGIS -- Understanding QGIS concepts -- Linking QGIS and Python -- Exploring the Python Console -- Examining a Python plugin -- Writing an external application -- Summary -- 2. The QGIS Python Console -- Using the console -- Working with geospatial data in the console -- Scripting the QGIS user interface -- The status bar -- The message bar -- Progress indicators -- QGIS logging -- Custom dialogs and windows -- Summary -- 3. Learning the QGIS Python API -- About the QGIS Python APIs -- Deciphering the C++ documentation -- Organizing the QGIS Python libraries -- The qgis.core package -- Maps and map layers -- Coordinate reference systems -- Vector layers -- Displaying vector data -- Accessing vector data -- Spatial indexes -- Raster layers -- How raster data is displayed -- Accessing raster data -- Other useful qgis.core classes -- The qgis.gui package -- The QgisInterface class -- The QgsMapCanvas class -- The QgsMapCanvasItem class -- The QgsMapTool class -- Other useful qgis.gui classes -- Using the PyQGIS library -- Analyzing raster data -- Manipulating vector data and saving it to a shapefile -- Using different symbols for different features within a map -- Calculating the distance between two user-defined points -- Summary. 4. Creating QGIS Plugins -- Getting ready -- Understanding the QGIS plugin architecture -- Creating a simple plugin -- The plugin development process -- Using the Plugin Builder -- Automating the build process -- Plugin help files -- Unit testing -- Distributing your plugin -- Writing a useful plugin -- Possibilities and limitations of plugins -- Summary -- 5. Using QGIS in an External Application -- Introducing Lex -- Getting the data -- Designing the application -- Creating the application's framework -- Adding the user interface -- Connecting the actions -- Creating the map canvas -- Labeling the points -- Filtering the landmarks -- Implementing the zoom tool -- Implementing the pan tool -- Implementing the explore mode -- Further improvements and enhancements -- Summary -- 6. Mastering the QGIS Python API -- Working with symbol layers -- Combining symbol layers -- Implementing symbol layers in Python -- Implementing renderers in Python -- Working with custom map layers -- Creating custom map canvas items -- Using memory-based layers -- Summary -- 7. Selecting and Editing Features in a PyQGIS Application -- Working with selections -- Using the layer editing mode -- Adding Points -- Editing Points -- Deleting Points and other features -- Adding lines and polygons -- Editing lines and polygons -- Summary -- 8. Building a Complete Mapping Application using Python and QGIS -- Introducing ForestTrails -- Designing the ForestTrails application -- Creating the application -- Laying out the application -- Defining the toolbar icons -- The constants.py module -- The forestTrails.py module -- The mapTools.py module -- The ui_mainWindow.py module -- Running the application -- Obtaining the basemap -- Defining the map layers -- Defining the map renderers -- The Pan Tool -- Implementing the track editing mode -- Summary. 9. Completing the ForestTrails Application -- The Add Track map tool -- Testing the application -- Vertex snapping -- The Edit Track map tool -- The Delete Track map tool -- The Get Info map tool -- The Set Start Point and Set End Point actions -- The Find Shortest Path action -- Adjusting the toolbar actions -- Suggested improvements -- Summary -- Index.
If you are an experienced Python developer who wants to create your own geospatial applications with minimum fuss, this is the book for you. While some familiarity with mapping applications would be an advantage, no prior knowledge of geospatial concepts is required. Even if you've never used QGIS before, this book will quickly get you up to speed.