Landscape Archaeology

Le réseau de parcellaire qui recouvre les campagnes agricoles et pastorales est un sujet particulièrement cher aux archéologues du paysage. Les haies, les chemins, les murets et autres structures qui délimitent les champs cultivés et les pâturages ont parfois une persistance temporelle étonnante : le parcellaire de Hvar, en Croatie,... [Read More]

I’ve been seeing on the net more and more of beautiful maps made in 3D software, Blender mostly. The reason for venturing into 3D: shadows mostly. While we do have hillshading algorithms in most GIS packages, nothing can beat true ambient light for terrain visualisation. Shadows do not only give... [Read More]

Intervisibility analysis tests the potential for visual connection between two observers. I say potential because visibility on landscape scale is often the question of a myriad factors (distance, atmosphere, signal quality etc…). Visibility analysis in GIS is usually taking into account only the terrain (plus solid buildings) and tests whether... [Read More]

QGIS algorithm for natural shadow modelling. [Read More]

Topographic position index (TPI) is a method of terrain classification where the altitude of each data point is evaluated against its neighbours. If a point is higher than its surroundings, the index will be positive, as for example on ridges and hilltops, while the figure will be negative for sunken... [Read More]