Visibility index for QGIS : finally there!

Welcome visibility index algorithm, aka total viewshed, now available in QGIS Visibility analysis plugin. This metric informs us on the size of the visual field for any location across a given terrain, normally each pixel in a gridded digital elevation model (DEM). At first, visibility index resembles other terrain indices... [Read More]

Ambient occlusion and sky-view factor for QGIS

Ambient occlusion is a concept developed in 3D modelling and visualisation which is used to evaluate the exposition to the ambient light of each model element. The idea is to simulate the diffuse, scattered light that bounces off various surfaces. Such light may not have an identifiable source, as for... [Read More]