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A simulation and visualization environment for spatiotemporal disaster risk assessments of network infrastructures / Magnus Heittzler in Cartographica, vol 52 n° 4 (Winter 2017)  

Public [article]  inCartographica > vol 52 n° 4 (Winter 2017) . - pp 349 - 363 Titre : A simulation and visualization environment for spatiotemporal disaster risk assessments of network infrastructures Type de document : Article/Communication Auteurs : Magnus Heittzler, Auteur ; Juan Carlos Lam, Auteur ; Jürgen Hackl, Auteur ; Bryan T. Adey, Auteur ; Lorenz Hurni, Auteur Année de publication : 2017 Article en page(s) : pp 349 - 363 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse géovisuelle [Termes IGN] données spatiotemporelles [Termes IGN] environnement de développement [Termes IGN] évaluation [Termes IGN] modèle de simulation [Termes IGN] réseau technique [Termes IGN] risque naturel [Termes IGN] Suisse [Vedettes matières IGN] Géovisualisation Résumé : (Auteur) Emerging methodologies for risk assessments of civil infrastructure networks require the coupling of several spatiotemporal models that need to be executed multiple times with varying parametrizations to account for model uncertainty and to investigate “what-if” scenarios. These requirements led to the development of a software environment to support the simulation process and the visual analysis of its results. The simulation engine component of the environment makes it possible to define, couple, and execute models. An embedded infrastructure model facilitates the development of functionality to estimate and aggregate capacity measures of single objects affected by multiple hazards. The simulation manager component can be used to execute multiple instances of the simulation engine conveniently with varying parametrizations. The included visualization tool provides two complementary views. The ensemble view can be used to analyze the data at a highly aggregated level with information visualization techniques and the simulation view can be used to investigate simulations in greater detail via an interactive map window and a state dependency graph. The software environment is used in a risk assessment for the region of Chur, Switzerland, which comprises the simulation of multiple natural hazard scenarios that lead to impaired transport infrastructure capacities and thus to disrupted traffic flows. Numéro de notice : A2017-831 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/cart.52.4.2017-0009 En ligne : https://doi.org/10.3138/cart.52.4.2017-0009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89367 [article]

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Towards better WMS maps through the use of the styled layer descriptor and cartographic conflict resolution for linear features / Ionuţ Iosifescu Enescu in Cartographic journal (the), Vol 52 n° 2 (May 2015)  

Public [article]  inCartographic journal (the) > Vol 52 n° 2 (May 2015) . - pp 125 - 136 Titre : Towards better WMS maps through the use of the styled layer descriptor and cartographic conflict resolution for linear features Type de document : Article/Communication Auteurs : Ionuţ Iosifescu Enescu, Auteur ; Nadia H. Panchaud, Auteur ; Magnus Heittzler, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 125 - 136 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] analyse comparative [Termes IGN] cartographie par internet [Termes IGN] conflit d'espace [Termes IGN] généralisation cartographique automatisée [Termes IGN] objet cartographique [Termes IGN] Styled Layer Descriptor [Termes IGN] Web Map Service Résumé : (Auteur) The Open Geospatial Consortium (OGC) Web Map Service (WMS) and Styled Layer Descriptor (SLD) standards define a way of dynamically producing maps from vector data. However, this dynamic process often results in maps that are not easily readable when the underlying data are automatically represented at smaller scales than the original data were intended for. Fortunately, the SLD rules can be decoded, the symbolization rules translated into geometrical features, and cartographic conflicts detected and partially solved. The conflicting features can be identified based on the use of few basic geospatial analysis functions. After a solution that minimizes these conflicts emerges, new SLD rules are generated that attempt to visually solve the cartographic conflicts. The new SLD rules can then be applied on-demand by a cartographic proxy server that rewrites the incoming GetMap requests to use the new SLD rules. The process for improving the WMS cartographic output has several stages, grouped into preparatory steps (basic automatic generalization methods, rough scale-dependent SLD symbolization) and real-time processing steps (detection of cartographic conflicts, conflicts solution and generation of new SLD rules). The entire process of detecting and solving cartographic conflicts in the maps produced by WMS through the use of overriding SLD rules is described in detail. Furthermore, it is conceivable to transform the conflicting features into spatial objects containing methods for discovering appropriate SLD values that minimize conflicts. Such approaches can bring the performance of automatic detection and correction of cartographic conflicts above the threshold required for interactive visualization, thus, making the process of dynamically solving cartographic conflicts in WMS servers a viable solution. Numéro de notice : A2015-762 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2015.1119468 En ligne : http://dx.doi.org/10.1080/00087041.2015.1119468 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78800 [article]

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030-2015021	RAB	Revue	Centre de documentation	En réserve L003	Disponible