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  • Open Access


    Analyser la structure de dispositifs de mise à disposition de données géographiques

    Application aux enjeux de suivi et de gestion du trait de côte en France

    Johan Desbonnet1 , Françoise Gourmelon1, Christophe Claramunt2

    Revue Internationale de Géomatique, Vol.29, No.1, pp. 57-80, 2019, DOI:10.3166/rig.2019.00079

    Abstract In the context of shoreline management and monitoring issues, inferring information and knowledge from the Web are considered as a crucial issue. However, Spatial Data Infrastructures promoters’ strategies and content are still unknown. This article presents a methodological approach to study the technical possibilities of access to the digital geographic information on online platforms often used for shoreline management and monitoring in France. Geographical data access on such platforms is granted by the presence of hyperlinks and Geospatial Web services. The analysis of this structural components (hyperlinks and Web services) shows a disparate situation for the access to geographical information.… More >

  • Open Access


    Pour un observatoire des données géographiques du Web

    Expérimentation à partir des infrastructures de données géographiques françaises

    Matthieu Noucher1 , Françoise Gourmelon2, Christophe Claramunt3

    Revue Internationale de Géomatique, Vol.29, No.1, pp. 9-30, 2019, DOI:10.3166/rig.2019.00074

    Abstract Extensive uses of geographic information generate a data deluge on many Web infrastructures. Monitoring and analyzing the content of these platforms is still a research challenge because these can be considered as very dynamic informational and algorithmic black boxes. The concept of “geographical information observatory” appears as an appropriate mean to monitor, analyze and then provide a better understanding of the evolution of the volume and flows of the spatial data available on a specific web infrastructure. Nevertheless, its implementation raises several methodological questions discussed in this paper, starting from the experimentation of a diachronic data observation of French Spatial… More >

  • Open Access


    Le vandalisme dans l’information géographique volontaire

    Du concept à la détection non supervisée d’anomalie

    Quy Thy Truong1 , Guillaume Touya2, Cyril de Runz3

    Revue Internationale de Géomatique, Vol.29, No.1, pp. 31-56, 2019, DOI:10.3166/rig.2019.00073

    Abstract Since vandalism is a serious matter for the quality of Volunteered Geographic Information, this paper aims at exploring machine learning techniques that enable its detection. First, a focus on the various definitions of vandalism highlights the complexity of this concept. This focus comprises a case study on proven vandals in OpenStreetMap (OSM). Second, we present an experimental vandalism detection on OSM data using a clustering-based outlier detection. The analysis of initial results leads to a discussion about the construction of an OSM vandalism corpus that would be useful in a supervised learning context.

    Dans un contexte où le vandalisme de… More >

  • Open Access


    Analyse spatiotemporelle des tournées de livraison d’une entreprise de livraison à domicile

    Khaled Belhassine1,3, Jacques Renaud1,2,3, Leandro Coelho1,2,3,4, Jean-Philippe Gagliardi5

    Revue Internationale de Géomatique, Vol.29, No.2, pp. 207-230, 2019, DOI:10.3166/rig.2019.00090

    Abstract In this article, we present a spatio-temporal analysis of delivery routes from GPS points of private vehicles. Several thousand GPS geolocation observations obtained from this delivery routes are collected, processed and map matched to the road network. As a result of these spatio-temporal analyzes, we develop daily congestion index calendars as a function of the time of the day. The sectorial congestion ratios are computed and used to determine the best delivery departure times, in order to avoid road congestion. Using data from our industrial partner, our analyzes indicate a potential reduction of 22% of the duration of the delivery… More >

  • Open Access


    Champs et objets pour mieux représenter les phénomènes dans leur contexte géographique

    Anne Ruas, Ha Pham, Laura Pinson

    Revue Internationale de Géomatique, Vol.29, No.2, pp. 185-205, 2019, DOI:10.3166/rig.2019.00081

    Abstract Many studies and research aim at better knowing phenomena such as pollution or climate. The fields of value representing these phenomena can be visualized on scientific visualization tools which do not have the richness of symbolization specific to the GIS, in particular for the georeferencing and for the representation of the vector objects describing the geographical context. The representation in raster on GIS is possible but limited. However, at the scientific level, it is important to be able to co-visualize the fields describing phenomena in their geographical context to better analyze them and make assumptions about the interactions between a… More >

  • Open Access


    Utilisation du modèle PAP/CAR et du SIG pour un zonage du risque d’érosion hydrique

    Exemple du bassin versant de Tessa (Tunisie)

    Nassira Zouaoui, Radhia Mansour, Abdessalem El Ghali

    Revue Internationale de Géomatique, Vol.29, No.3, pp. 361-380, 2019, DOI:10.3166/rig.2020.00096

    Abstract In the humid Mediterranean regions, particularly the NW of Tunisia, the Tessa catchment area is characterized by torrential and irregular rains, combined with significant deforestation, which causes severe erosion that carries away and redistributes the soil. The process of water erosion is very frequent and changes its dynamic aspect according to the evolution and spatial variation of the lithological nature of rocks, the geomorphology of landscapes, the geometry of watersheds and their bioclimatic situation. In this study, an appropriate methodological flowchart was followed by applying the PAP/RAC erosion mapping method, which is based on the principle of weighting the main… More >

  • Open Access


    GeoWeb 2.0 applications could support the Geodesign process

    Wided Batita

    Revue Internationale de Géomatique, Vol.29, No.3, pp. 263-285, 2019, DOI:10.3166/rig.2019.00092

    Abstract The emergence of Web 2.0 is materialized by new technologies (APIs, Ajax, etc.), by new practices (mashup, geotagging, etc.) an, by new tools (wiki, blog, etc.). It is primarily based on the principle of participation and collaboration. In this dynamic, the web mapping with spatial character or simply called Geospatial Web (or Geoweb) evolves by strong technological and social changes. Participatory GeoWeb 2.0 is materialized in particular by mashups among wikis and géobrowsers (ArgooMap, Geowiki, WikiMapia, etc.). The new applications resulting from these mashups are moving towards more interactive forms of collective intelligence. The Geodesign is a new area, which… More >

  • Open Access


    Élaboration d’une application SIG pour un aménagement intégré du littoral de la préfecture de Tanger-Assilah (Maroc)

    Rabii El Hamzaoui, Ahmed Raissoun, Amal Ouahi, Abdelkrim El Arri

    Revue Internationale de Géomatique, Vol.29, No.3, pp. 297-315, 2019, DOI:10.3166/rig.2019.00083

    Abstract Tangier-Assilah prefecture coast, situated in the furthest north-west of Morocco Kingdom constitutes an important attraction center for many socioeconomic activities and shelters an environmental varied rich and vulnerable patrimony.The integrated management of this complex space involves a thorough knowledge of its functioning and evolution, themselves are reliant on several physical socioeconomic and statutory factors, which interact at different spatiotemporal scales. And for such a purpose, the GIS represents an adequate implement for collecting, managing, processing and spreading abroad a huge amount of diverse sources and natures data.The aim of this current work is the implementation of a coastal Geographic Information… More >

  • Open Access


    Classification d’aires de dispersion à l’aide d’un facteur géographique

    Application à la dialectologie

    Clément Chagnaud1,3, Philippe Garat2, Paule-Annick Davoine1,3, Guylaine Brun-Trigaud4

    Revue Internationale de Géomatique, Vol.30, No.1, pp. 67-83, 2020, DOI:10.3166/rig.2020.00107

    Abstract This article has no abstract. More >

  • Open Access


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