This section is intended to show how to perform basic GIS operations in QGIS in the most straightforward way. It is modelled after “How do I do that in ArcGIS/Manifold?: illustrating classic GIS tasks”. That document illustrated a selection of tasks which were thought to be representative of common usage in 2004, and was itself derived from a checklist of essential GIS functions that was included in 1988 in “A Process for Selecting Geographic Information Systems”. As well as everyday tasks for managing and presenting spatial data, this section includes common operations which are typically one step in a longer process of analysis.
Apart from personal learning, you are free to use these tutorials in a classroom for teaching purposes. The above license also allows you to adapt the tutorials as per your requirements. I am generally open to any type of non-commercial use of the tutorials published here. If you do use these in any way, I would love to know about it and even feature it here. Please email me at ujaval [at] spatialthoughts [dot] com
Digitizing is one of the most common tasks that a GIS Specialist has to do. Often a large amount of ‘GIS time’ is spent in digitizing raster data to create vector layers that you use in your analysis. Quantum GIS has powerful capabilities to digitize raster data. In this tutorial, we will take some high resolution satellite imagery and digitize it to create a vector polygon layer. The imagery we are using today is from Quickbird satellite.