Workshop

Introduction - Tools

• QGIS
  • What is QGIS?
  • History
  • Project Layout
  • Basic Usage
• Python
  • What is Python
  • Why it is important/popular
  • Examples
• QT
  • What it is
  • C++
  • Nokia
• PyQT
  • What it is
  • How it provided the idea behind PyQGIS
  • Examples

1st Hour - Exploring how Python can be used in QGIS

• Python in QGIS
  • QGIS Plugins
  • Python Console
• Tutorial #1 – Installing QGIS Plugins
• Tutorial #2 – Exploring the QGIS Python Console
  • Setup
  • Accessing Layers
  • Loading Layers into QGIS
  • Accessing Vector Geometry
  • Accessing Data Attributes
• Exercise
  • Output Vector Layer attributes to the TextBrowser

2nd Hour - Building Python Plugins

• Plugin Architecture
• Tutorial – Building A Simple Plugin
  • Building Our First Plugin with ‘Plugin Builder’
  • Extending the Plugin Builder Templates
  • 1) Designing the GUI
  • 2) Implement Map Canvas Click Action
  • 3) Implement Feature Selection on Map Canvas Click
  • 4) Implement the Tool Activation w/ Checkbox
  • 5) Make a Sexier Tool – Yah!
• Exercises
  • GOAL: On-the-Fly Raster Value Emitter
  • Starter Exercise
  • Advanced Exercise

3rd Hour - Event-Driven Notes / Debugging / Plugin Repositories

• Building Event-Driven Plugins
  • Event Concepts in QGIS
• Debugging Plugins
  • Python console in QGIS
  • Using the PyQT debug hook
  • Pdb Commands and Tricks
• Plugin Repositories
  • Official repositories
  • Publicly available remote repositories
  • Your own private repository
  • Packaging

Workshop Hard Copy Handout

• Handout: Take Home Points
  • Accessing Layers through QgisInterface and QgsMapCanvas
  • Accessing Features (Attributes and Geometry)
  • SIGNAL and SLOT Examples
  • Debugging with Pdb
  • Creating a Plugin Repository

TimeLine

• Workshop Timeline