Landscape Archaeology

Land visibility in the Mediterranean: a large scale model

Visibility of land was a major consideration for ancient seafaring, for reasons of navigation and security. Even if the open sea travel must have been practised already by the Neolithic…

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Natural places and archaeology

First time I heard of something like “natural places” was some ten years ago at a conference in Slovenia. Several, mostly young researchers were proud to demonstrate an existence of…

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Lissage du modèle numérique de terrain BD ALTI

Le problème n’est pas nouveau, mais on ne trouve toujours pas de solutions simples pour le « maquillage » du modèle numérique de terrain (MNT) très couramment utilisé en France,…

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Benchmarking viewshed algorithm: Nuraghi of Sardinia

The new viewshed plugin for QGIS 3 features an improved algorithm which should result in perceptible improvements in terms of efficiency. So let’s give it a try! Nuraghe in Toralba-Sant'Antine…

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Le géosymbole vu par l’archéologie

[Billet remanié et transféré sur fragments.hypothèses.org] Le concept du géosymbole est issu du mouvement culturaliste en géographie, suite au désenchantement, dans les années 80, par les approches structuralistes. Ces dernières…

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Looping through numpy arrays (e.g. moving/rolling window)

Numpy is the cornerstone of matrix based calculations in QGIS (and elsewhere). It does wonders with raster data (unless it hits the limit of available live memory…). A recurrent problem…

QGIS plugins

Visibility analysis for QGIS 3.0

Visibility analysis plugin is now available in QGIS 3.0! It has been completely refurbished: from now on it will be integrated into the “Processing toolbox”. This is a more appropriate…

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Tanaka method or how to make shaded contour lines

Contour lines have become a commonplace, unassuming companion of our cartographic outputs - GIS has made us forget their visual potential. Already in the 19th century cartographers experimented with shaded…

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My first QGIS map: the aid from Cyrene

Cyrene, Lybia Sometime during the reign of Alexander of Macedon a famine broke out in Greece. We don’t have many documents reporting the gravity of situation; apparently Greece was suffering…

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Polar (circular) diagram

Orientation of geographic features can be an important piece of information, for instance when studying ancient field systems or analysing geological formations. The problem comes when we try to summarise…

Land visibility in the Mediterranean: a large scale model

Natural places and archaeology

Lissage du modèle numérique de terrain BD ALTI

Benchmarking viewshed algorithm: Nuraghi of Sardinia

Le géosymbole vu par l’archéologie

Looping through numpy arrays (e.g. moving/rolling window)

Visibility analysis for QGIS 3.0

Tanaka method or how to make shaded contour lines

My first QGIS map: the aid from Cyrene

Polar (circular) diagram

Heatmaps for spatial analysis: some thoughts and rants…

Spatial archaeology workshop, École française de Rome – program

Visibility Networks

Landscape archaeology: an introduction