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Adding metadata to maps and styled layers to improve map efficiency / Bénédicte Bucher (2010)    

Public Titre : Adding metadata to maps and styled layers to improve map efficiency Type de document : Article/Communication Auteurs : Bénédicte Bucher , Auteur ; Sébastien Mustière , Auteur ; Laurence Jolivet , Auteur ; Jérémy Renard , Auteur Editeur : Saint-Mandé : Institut Géographique National - IGN (2008-2011) Année de publication : 2010 Conférence : EU 2010, INSPIRE Conference 23/06/2010 25/06/2010 Cracovie Pologne Importance : 7 p. Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] métadonnées [Termes IGN] métadonnées géographiques [Termes IGN] Styled Layer Descriptor Résumé : (auteur) [introduction] Standard APIs to visualise geodata on information infrastructures, like OGC MapContext (OGC 2005) or StyledLayer Document (OGC 2007), focus on specifying the map spatial extent, size and styled layers. The selection of styled layers mostly relies on portrayed features and on the layer acceptable resolutions. Theoretically, the selection of a styled layer could in a near future also rely on the nature of portrayed features based on semantic annotations of feature types in catalogues. But more criteria need to be considered when designing a map, e.g. what relationships between features should be visually rendered or what will be the ambient light. More generally, cartographers point out the relevance of relying on a map requirements to design more usable maps which include usable styles (Forrest 1999) (Chesneau et al. 2005) (Nivala et al. 2007) (Jakobsson 2002) (Stanek et al. 2007)(Bucher et al. 2007). There are two distinct issues addressed in this paper. First issue is that defining fixed styles, e.g. for each INSPIRE layer, that will be used on any map is a very challenging task –if not impossible-. Yet, on the fly definition of adapted styles and feature portrayal is a costly process. A compromise is to define a registry of different styles for the same layers in order to adapt to different ‘criteria’ regarding the final map. Second issue is that many new map makers usually have no academic background in cartography (Gartner and Peterson 2007). They may not always be capable of retrieving relevant styled layers for their map in a registry based on the existing styled layers description (feature types and styling rules); they need an abstract querying model. This also holds when the map maker uses a graphical client to build his map from existing layers flows. In this paper, we introduce both an abstract map specification model and a registry of predefined styled layers, focused on the adequate usage of colours in topographic maps. We illustrate the relevance of the different elements of our model based on three sources. The first one is the French Geoportail experience. The second one is the usability study performed by (Nivala et al. 2007). They have evaluated the usability of Web maps based on end user tests and on expert assessments. The third source is a study where we have extrapolated large scale topographic maps keys from 15 European countries to the French BDTOPO® data model and applied the adapted keys to the same set of BDTOPO® data. Numéro de notice : C2010-059 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans En ligne : https://hal.science/halshs-02344786 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101944

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