PyQGIS Developer Cookbook¶

Wprowadzenie
- Run Python code when QGIS starts
- Python Console
- Python Plugins
- Python Applications
Loading Projects
Loading Layers
- Vector Layers
- Raster Layers
- Map Layer Registry
Using Raster Layers
- Layer Details
- Renderer
- Refreshing Layers
- Query Values
Using Vector Layers
- Retrieving information about attributes
- Selecting features
- Iterating over Vector Layer
- Modifying Vector Layers
- Modifying Vector Layers with an Editing Buffer
- Using Spatial Index
- Writing Vector Layers
- Memory Provider
- Appearance (Symbology) of Vector Layers
- Further Topics
Geometry Handling
- Geometry Construction
- Access to Geometry
- Geometry Predicates and Operations
Projections Support
- Coordinate reference systems
- Projections
Using Map Canvas
- Embedding Map Canvas
- Using Map Tools with Canvas
- Rubber Bands and Vertex Markers
- Writing Custom Map Tools
- Writing Custom Map Canvas Items
Map Rendering and Printing
- Simple Rendering
- Rendering layers with different CRS
- Output using Map Composer
Expressions, Filtering and Calculating Values
- Parsing Expressions
- Evaluating Expressions
- Przykłady
Reading And Storing Settings
Communicating with the user
- Showing messages. The QgsMessageBar class
- Showing progress
- Logging
Developing Python Plugins
- Writing a plugin
- Plugin content
- Documentation
- Translation
IDE settings for writing and debugging plugins
- A note on configuring your IDE on Windows
- Debugging using Eclipse and PyDev
- Debugging using PDB
Using Plugin Layers
- Subclassing QgsPluginLayer
Compatibility with older QGIS versions
- Plugin menu
Releasing your plugin
- Metadata and names
- Code and help
- Official python plugin repository
Code Snippets
- How to call a method by a key shortcut
- How to toggle Layers
- How to access attribute table of selected features
Writing a Processing plugin
- Creating a plugin that adds an algorithm provider
- Creating a plugin that contains a set of processing scripts
Network analysis library
- General information
- Building a graph
- Graph analysis
QGIS Server Python Plugins
- Server Filter Plugins architecture
- Raising exception from a plugin
- Writing a server plugin
- Access control plugin