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Vers plus d'expressivité dans les représentations graphiques du territoire / Sidonie Christophe (2018)
contenu dans 4ème colloque international CIST 2018, Représenter les territoires / Clarisse Didelon-Loiseau (2018)
Titre : Vers plus d'expressivité dans les représentations graphiques du territoire Type de document : Article/Communication Auteurs : Sidonie Christophe , Auteur Editeur : Paris : Collège International des Sciences du Territoire CIST Année de publication : 2018 Projets : 1-Pas de projet / Conférence : CIST 2018, 4e colloque du Collège international des sciences du territoire 22/03/2018 24/03/2018 Rouen France Open Access Proceedings Note générale : bibliographie Langues : Français (fre) Descripteur : [Termes IGN] carte topographique
[Termes IGN] conception cartographique
[Termes IGN] rendu expressif
[Termes IGN] représentation cartographique
[Termes IGN] style cartographique
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) This paper addresses the issue of expressivity conveyed by the graphical representations of territory. In order to improve the relevancy between graphical representations and effective uses of those representations, expressivity should be enhanced in map and geovisualisation design. Based on knowledge and methods coming from expressive rendering, a sub-domain of computer graphics, we proposed specific rendering techniques for map and geovisualisation design, from the specification of styles. Two stylisation projects, in map design (MapStyle) and in 3D geovisualisation design (Plu++), provide a high diversity of graphical representations of the territory, aiming at making them relevant for many uses. Exploring the space of possible graphical representations is also a way to approach the issue of perception and cognition of complex phenomena on the territory. Numéro de notice : C2018-001 Affiliation des auteurs : LASTIG COGIT (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésNat DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89388 Documents numériques
en open access
Vers plus d'expressivité ... - pdf éditeurAdobe Acrobat PDF An analysis of movement patterns between zones using taxi GPS data / Zhanlong Chen in Transactions in GIS, vol 21 n° 6 (December 2017)
[article]
Titre : An analysis of movement patterns between zones using taxi GPS data Type de document : Article/Communication Auteurs : Zhanlong Chen, Auteur ; Xi Gong, Auteur ; Zhong Xie, Auteur Année de publication : 2017 Article en page(s) : pp 1341 - 1363 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] modèle numérique
[Termes IGN] Pékin (Chine)
[Termes IGN] trace GPS
[Termes IGN] trajectographie par GPS
[Termes IGN] trajet (mobilité)
[Termes IGN] urbanisme
[Termes IGN] véhicule automobile
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) The discovery of zones and people's movement patterns supports a better understanding of modern cities and enables a more comprehensive strategy for urban planning. This article proposes a modified method based on previous research to simultaneously discover people's zones and movement patterns, called movement patterns between functional zones (MPFZ). The method attempts to take full advantage of taxi GPS data to identify MPFZs by merging the movement traces satisfying the merging conditions. Considering movement directions, movement numbers and the adjacent constraints that consist of spatial relationship and attribute features, the merging conditions limit the movement traces to be merged. The new MPFZs are discovered by an iteration process and are measured by the following three evaluation indices: v‐value, a‐value and c‐value, which represent coverage, accuracy and their trade‐off. Using a real‐world taxi dataset of Beijing, 24 new MPFZs are discovered, which have higher v‐, a‐ and c‐values than the unmerged MPFZs. The results of the real‐world dataset experiment show that the proposed approach is effective and efficient. The proposed method can also be applied to other types of transportation data and regions by adjusting the dataset utilized and controlling the iteration process. Numéro de notice : A2017-839 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12281 Date de publication en ligne : 07/08/2017 En ligne : https://doi.org/10.1111/tgis.12281 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89375
in Transactions in GIS > vol 21 n° 6 (December 2017) . - pp 1341 - 1363[article]An efficient data organization and scheduling strategy for accelerating large vector data rendering / Mingqiang Guo in Transactions in GIS, vol 21 n° 6 (December 2017)
[article]
Titre : An efficient data organization and scheduling strategy for accelerating large vector data rendering Type de document : Article/Communication Auteurs : Mingqiang Guo, Auteur ; Ying Huang, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 1217 - 1236 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] données vectorielles
[Termes IGN] processeur graphique
[Termes IGN] processeur multicoeur
[Termes IGN] rendu (géovisualisation)
[Termes IGN] traitement parallèle
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) Rendering large volumes of vector data is computationally intensive and therefore time consuming, leading to lower efficiency and poorer interactive experience. Graphics processing units (GPUs) are powerful tools in data parallel processing but lie idle most of the time. In this study, we propose an approach to improve the performance of vector data rendering by using the parallel computing capability of many‐core GPUs. Vertex transformation, largely a mathematical calculation that does not require communication with the host storage device, is a time‐consuming procedure because all coordinates of each vector feature need to be transformed to screen vertices. Use of a GPU enables optimization of a general‐purpose mathematical calculation, enabling the procedure to be executed in parallel on a many‐core GPU and optimized effectively. This study mainly focuses on: (1) an organization and storage strategy for vector data based on equal pitch alignment, which can adapt to the GPU's calculating characteristics; (2) a paging‐coalescing transfer and memory access strategy for vector data between the CPU and the GPU; and (3) a balancing allocation strategy to take full advantage of all processing cores of the GPU. Experimental results demonstrate that the approach proposed can significantly improve the efficiency of vector data rendering. Numéro de notice : A2017-837 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12275 Date de publication en ligne : 23/05/2017 En ligne : https://doi.org/10.1111/tgis.12275 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89373
in Transactions in GIS > vol 21 n° 6 (December 2017) . - pp 1217 - 1236[article]Quality control and new data-quality measures for the aesthetics of a Croatian topographic map at the scale of 1:25,000 / Branko Puceković in International journal of cartography, vol 3 n° 2 (December 2017)
[article]
Titre : Quality control and new data-quality measures for the aesthetics of a Croatian topographic map at the scale of 1:25,000 Type de document : Article/Communication Auteurs : Branko Puceković, Auteur ; Miljenko Lapaine, Auteur Année de publication : 2017 Article en page(s) : pp 187 - 200 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] 1:25.000
[Termes IGN] carte topographique
[Termes IGN] contrôle qualité
[Termes IGN] Croatie
[Termes IGN] esthétique cartographique
[Termes IGN] mesure de la qualité
[Termes IGN] représentation du relief
[Termes IGN] rocher
[Termes IGN] style cartographique
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) A brief overview is given of the quality control of a 1:25,000 scale topographic map, carried out by the Croatian Geodetic Institute (CGI). As the topic of the aesthetics of the topographic map has, in the authors’ opinion, not been extensively covered, the paper concentrates on this topic. The paper focuses on devising an aesthetic standard relating mainly to the representation of relief. In fact, aesthetics can be controlled indirectly in terms of relief and water course alignment, the smoothness of contour lines, the non-existence of bonded contour lines and rock representation justification. A comparison between quality control at the CGI and quality elements according to contemporary standards was carried out. The presence of data-quality elements was registered in accordance with the ISO guidelines. A proposal for several data-quality measures for aesthetics related to relief representation is also given. Numéro de notice : A2017-685 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/23729333.2016.1278191 En ligne : https://doi.org/10.1080/01431161.2016.1252477 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=87349
in International journal of cartography > vol 3 n° 2 (December 2017) . - pp 187 - 200[article]A simulation and visualization environment for spatiotemporal disaster risk assessments of network infrastructures / Magnus Heittzler in Cartographica, vol 52 n° 4 (Winter 2017)
[article]
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] GéovisualisationRésumé : (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
in Cartographica > vol 52 n° 4 (Winter 2017) . - pp 349 - 363[article]Réservation
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