Section: Software and Platforms

A plugin for visualizing and editing spatial graphs in QGis

Spatial graphs are accurate representations of spatial information through spatial objects linked by relationships (spatial or not). This representation is suited to the modeling and analysis of spatial information by computer processing (data mining, search for shortest paths, etc.). While Geographic information System (GIS), such as QGis, offers the possibility to visualize and manage georeferenced information, the use of spatial graph suffers from the lack of tools to facilitate the construction and integrated visualization.

We developed a QGis plugin for the visualization and the interactive construction of spatial graphs. QGis is the most used open source GIS. This plugin introduces a new type of layer: GraphLayer [16] . These new layers can be integrated into any GIS projects. They offer rich functionality for visualization and interactive editing.