QGIS Tips

Introduction

This page contains a brief introduction to the Quantum GIS software (QGIS). QGIS is a Free Open Source Software which for more information please see the QGIS website www.qgis.org/. The basics of QGIS, particularly with respect to TUFLOW modelling are described below, each of these has a separate page. If you have any suggestions to be included in these pages, please add them to the discussion page. Please add QGIS Suggestions Here!.

QGIS uses ArcGIS file formats for vector data, with data stored in shapefiles (.shp). QGIS, however, is able to read in MapInfo files directly. In the shapefiles, points, lines and regions are stored in separate files.

Basics

In this section are some basic GIS functions that are regularly used in creating TUFLOW models in QGIS.

1. Navigation
2. Setting Project Projection
3. Editing a Shapes Layer
4. Editing attributes with Table Manager Plugin
5. Importing a Grid
6. Create a grid from points

Tips and Tricks

1. Relief Shading
2. Adding Google / Bing Aerials
3. Convert Lines to Points
4. Rotate Label to Line
5. Export Raster to .asc for TUFLOW input
6. Plot grid elevations using profile tool
7. Update a column
8. Extract cross sections from DEM into TUFLOW .csv format
9. Thematic mapping (Symbology)
   

Useful QGIS plugins

Useful QGIS plugins for TUFLOW modelling (draft)

TUFLOW QGIS plugin

For instructions on running the TUFLOW QGIS plugin, please see the following page.... TUFLOW QGIS plugin

Crayfish QGIS plugin

The Crayfish QGIS Plugin developed by Lutra Consulting provides a powerful 2D result viewing platform for TUFLOW. For instructions on running the Crayfish QGIS plugin, please see the following page.... Crayfish 2D Result Viewer