Viewshed analysis is a standard feature of GIS software, but its potential cannot be fully explored by standard implementations. The idea behind this plugin is to provide alternative data outputs that cannot be obtained without difficulty (if at all) using simple binary viewsheds. However, the viewshed analysis is not just a “tool” : it is a very tricky kind of spatial modelling. Any implementation of viewshed analysis algorithm is of limited use when lacking proper documentation (which is almost never provided!).
Documentation for plugin version 0.5.x
NB. Manual for can be found here, and a tutorial here.
Viewshed analysis plugin for QGIS has been evolving (slowly) and eventually acquired a new habitat: the Processing toolbox. It can now be used in custom models and scripts similar to other Processing providers (such as SAGA or GRASS). The transformation was not a simple one and the whole thing i...
Visibility analysis plugin for QGIS is prospering quite well. As of writing, it counts some 20 000 downloads and a bunch of « votes », which means that at least several thousand people are using it. (Although, it does feel uncomfortable knowing that any potential error would risk a blame-storm ….)