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Smart cartographic background symbolization for map mashups in geoportals : A proof of concept by example of landuse representation / Nadia H. Panchaud in Cartographic journal (the), Vol 56 n° 1 (February 2019)  

Public [article]  inCartographic journal (the) > Vol 56 n° 1 (February 2019) . - pp 42 - 58 Titre : Smart cartographic background symbolization for map mashups in geoportals : A proof of concept by example of landuse representation Type de document : Article/Communication Auteurs : Nadia H. Panchaud, Auteur ; Lorenz Hurni, Auteur Année de publication : 2019 Article en page(s) : pp 42 - 58 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] application composite [Termes IGN] cartographie par internet [Termes IGN] conception cartographique [Termes IGN] géoportail [Termes IGN] niveau de gris (image) [Termes IGN] saturation de la couleur [Termes IGN] sémiologie graphique Résumé : (Auteur) Geospatial data are now widely available to the general public thanks to geoportals and online mapping platforms. However, creating a map involves more than just combining data layers. Thus we develop cartographic functions for geoportals to support better visual hierarchy in user map mashups. This includes a couple of preparatory steps followed by a smart cartographic background symbolization derived from the original layer style. We evaluate different approaches to background symbolization: greyscale, desaturation, and smart background. The different background symbolization methods are analysed with two concrete map examples and evaluated with a survey. The smart background symbolization developed in this work improves the visual hierarchy of the map mashup by reducing the visual importance of the background layers. Numéro de notice : A2019-447 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2017.1414019 Date de publication en ligne : 16/11/2018 En ligne : https://doi.org/10.1080/00087041.2017.1414019 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92793 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
030-2019011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Smart cartographic functionality for improving data visualization in map mashups / Nadia H. Panchaud in Cartographica, vol 52 n° 2 (Summer 2017)  

Public [article]  inCartographica > vol 52 n° 2 (Summer 2017) . - pp 194 - 211 Titre : Smart cartographic functionality for improving data visualization in map mashups Type de document : Article/Communication Auteurs : Nadia H. Panchaud, Auteur ; Ionuţ Iosifescu Enescu, Auteur ; Lorenz Hurni, Auteur Année de publication : 2017 Article en page(s) : pp 194 - 211 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique [Termes IGN] activité cartographique [Termes IGN] aide à la conception informatique [Termes IGN] application composite [Termes IGN] cartographie par internet [Termes IGN] données multisources [Termes IGN] fonctionnalité [Termes IGN] géoportail [Termes IGN] rendu (géovisualisation) [Termes IGN] sémiologie graphique [Termes IGN] utilisateur Résumé : (Auteur) Thanks to the growth of geoportal products and online cartographic platforms, access to spatial data has never been so easy for so many people. But access to cartographic knowledge for laypersons using such data is lagging behind. Platforms that allow users to create map mashups from diverse data sources can lead to unsatisfactory cartographic visualization, which reduces the map's legibility and the usefulness of such functions. This article's focus is on creating a framework that supports smart cartographic functions to improve the quality of map mashups. First, we assess the state of cartographic conflicts due to map mashup, using examples from existing geoportals. Afterwards, we describe a framework that allows us to define cartographic functions, focusing on symbology changes and based on a client-side approach. We do not aim to fully model the complex decision-making process of a professional cartographer, but rather to provide a set of smart functions that use appropriate assumptions and constraints based on cartographic principles and semantic information. As proof of concept, the framework and functions are then integrated within a geoportal. Numéro de notice : A2017-376 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/cart.52.2.4115 En ligne : https://doi.org/10.3138/cart.52.2.4115 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85801 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
031-2017021	SL	Revue	Centre de documentation	Revues en salle	Disponible

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]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
030-2015021	RAB	Revue	Centre de documentation	En réserve L003	Disponible