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Advanced Quantum GIS (QGIS) and GRASS

Aimed at users already familiar with the basics of Quantum GIS (QGIS), this course introduces participants to geodatabases, vector processing and raster processing, allowing QGIS to be used as a tool for advanced GIS analyses.

Key Skills

Participants will acquire the following key skills:

  • Creating and managing geodatabases
  • Geoprocessing
  • Generating surfaces through interpolation

Registering for this course

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Course outline

  • Introduction to the PostGIS and SpatiaLite geodatabases
  • Creating databases
  • Importing shapefiles
  • What is SQL?
  • Tutorial 1: Using PostGIS in Quantum GIS
  • Vector processing
  • Analysis and research tools
  • Geoprocessing
  • Geometry tools
  • Tutorial 2: Geoprocessing tools in Quantum GIS
  • Introduction to GRASS GIS
  • Setting up a GRASS mapset and location
  • Importing/Exporting georeferenced data
  • Raster and vector modules in GRASS
  • Tutorial 3: Creating heat maps
  • Tutorial 4: Determining the watershed and drainage system for a catchment

Tutorials

The course features a series of practical tutorials in which participants carry out exercises, further developing skills learnt during the course.

Tutorial 1: Using PostGIS in Quantum GIS

A PostGIS database will be developed, populated and queried using tools and plugins available in QGIS. Participants will learn how to fetch data using SQL queries and how to use PostGIS functions.

PostGIS

Tutorial 2: Geoprocessing tools in Quantum GIS

In this tutorial, participants will find the areas of forest that 2 types of non-migratory and migratory birds use as their hunting grounds in the New Forest.


Using geoprocessing to find common bird hunting grounds - Map data © OpenStreetMap contributors, CC-BY-SA (Click to enlarge)

Several vector geoprocessing tools will be used to buffer and subtract vectors to find the common hunting grounds.

Tutorial 3: Creating heat maps

Using GRASS GIS and a hypothetical dataset, a heat map of Anti-Social Behaviour Orders (ASBOs) in Staffordshire will be generated.


Heat map of hypothetical ASBO data - Map data © OpenStreetMap contributors, CC-BY-SA (Click to enlarge)

Tutorial 4: Determining the watershed and drainage system for a catchment

In this tutorial, participants will determine a hydrological catchment and natural drain network on the Isle of Wight using modules in GRASS GIS


Hydrological catchment and drainage network in GRASS GIS (Click to enlarge)

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