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Land and power: Making a new map of Ireland's border / Garrett Carr in Cartographica, vol 52 n° 3 (Fall 2017)
[article]
Titre : Land and power: Making a new map of Ireland's border Type de document : Article/Communication Auteurs : Garrett Carr, Auteur Année de publication : 2017 Article en page(s) : pp 251 – 262 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] conception cartographique
[Termes IGN] délimitation de frontière
[Termes IGN] détail topographique
[Termes IGN] frontière
[Termes IGN] Irlande
[Termes IGN] sémiologie graphique
[Termes IGN] site historique
[Termes IGN] symbole graphique
[Vedettes matières IGN] CartologieRésumé : (auteur) The author discusses the process behind a map of his creation, “A View of the Border.” It charts Ireland's north/south frontier and has been used to illustrate the author's 2017 monograph, The Rule of the Land: Walking Ireland's Border. Defending or questioning the legitimacy of Ireland's border is still a defining force in Ireland's politics, especially in Northern Ireland. In addition, this border is soon to become the United Kingdom's only land border with the European Union. The author takes issue with the borderline symbol on maps, suggesting that the reduction of Ireland to a binary has negative ramifications in political discourse – contributing to an us-versus-them stalemate. On the ground, Ireland's border is largely invisible and almost completely permeable; the author wondered if the border could be mapped in a way that would reflect this. To identify original modes of mapping the frontier, the author travelled the borderline from end to end. The resulting map charts defensive architecture and historical sites, as well as unofficial cross-border routes and other subjects. Many topographic elements on “A View of the Border” do not generally appear on maps; the author explains the thinking behind the inclusion of some of these elements and discusses designing the icons used represent them. The conclusion asks if any of the creative decisions made in “A View of the Border” could be applied to maps other border regions. Numéro de notice : A2017-718 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/cart.52.3.4200 En ligne : https://doi.org/10.3138/cart.52.3.4200 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=88376
in Cartographica > vol 52 n° 3 (Fall 2017) . - pp 251 – 262[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 031-2017031 SL Revue Centre de documentation Revues en salle Disponible Point grid map : a new type of thematic map for statistical data associated with geographic points / Mengjie Zhou in Cartography and Geographic Information Science, Vol 44 n° 5 (September 2017)
[article]
Titre : Point grid map : a new type of thematic map for statistical data associated with geographic points Type de document : Article/Communication Auteurs : Mengjie Zhou, Auteur ; Jing Tian, Auteur ; Fuquan Xiong, Auteur ; Rui Wang, Auteur Année de publication : 2017 Article en page(s) : pp 374 - 389 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] cartographie statistique
[Termes IGN] diagramme
[Termes IGN] données socio-économiques
[Termes IGN] grille
[Termes IGN] point
[Termes IGN] représentation cartographique
[Termes IGN] symbole graphiqueRésumé : (Auteur) Social, economic, and environmental statistical data associated with geographic points are currently globally available in large amounts. When conventional thematic maps, such as proportional symbol maps or point diagram maps, are used to represent these data, the maps appear cluttered if the point data volumes are relatively large or cover a relatively dense region. To overcome these limitations, we propose a new type of thematic map for statistical data associated with geographic points: the point grid map. In a point grid map, an input point data set is transformed into a grid in which each point is represented by a square grid cell of equal size while preserving the relative position of each point, which leads to a clear and uncluttered appearance, and the grid cells can be shaded or patterned with symbols or diagrams according to the attributes of the points. We present an algorithm to construct a point grid map and test it with several simulated and real data sets. Furthermore, we present some variants of the point grid map. Numéro de notice : A2017-447 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2016.1160797 En ligne : http://dx.doi.org/10.1080/15230406.2016.1160797 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86355
in Cartography and Geographic Information Science > Vol 44 n° 5 (September 2017) . - pp 374 - 389[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-2017051 RAB Revue Centre de documentation En réserve L003 Disponible Exploiting illusory grid lines for object-location memory performance in urban topographic maps / Frank Dickmann in Cartographic journal (the), Vol 54 n° 3 (August 2017)
[article]
Titre : Exploiting illusory grid lines for object-location memory performance in urban topographic maps Type de document : Article/Communication Auteurs : Frank Dickmann, Auteur ; Dennis Edler, Auteur ; Anne-Kathrin Bestgen, Auteur ; Lars Kuchinke, Auteur Année de publication : 2017 Article en page(s) : pp 242-253 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie
[Termes IGN] carte interactive
[Termes IGN] carte topographique
[Termes IGN] géopositionnement
[Termes IGN] quadrillage
[Termes IGN] symbole graphique
[Termes IGN] système d'information géographique
[Termes IGN] topologieRésumé : (Auteur) In order to be successful in spatial orientation tasks, people need to recall locations and configurations of spatial objects from their memory. This understanding of geographic space often arises from experience with cartographic media representing topographic and topological information by graphic symbols. Learning spatial information from graphic media is influenced by different perception-based grouping effects distorting the accuracy of spatial object-positions and their relations. Such geometric inaccuracies can be softened by adding a grid layer, which regionalizes the map and can be used as an additional orientation pattern. This grid layer usually consists of solid lines and overlays semantic information. The present paper reports the results of two empirical studies on object-location memory (OLM) performance. In these studies, the amount of visual detail of the grid layer was reduced. By positioning the grid layer below specific urban topographic objects (study 1), the grid pattern was graphically interrupted. These interrupted grid lines were completed by cognitive completion mechanisms (illusory grid lines) described in the Gestalt principles of closure and continuation. The second experiment examined the maximum grid line gap that is closed by cognitive line completion and keeps an advantage for OLM (study 2). Numéro de notice : A2017-693 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2016.1236509 En ligne : https://doi.org/10.1080/00087041.2016.1236509 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=88003
in Cartographic journal (the) > Vol 54 n° 3 (August 2017) . - pp 242-253[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2017031 RAB Revue Centre de documentation En réserve L003 Disponible Modeling canopy reflectance over sloping terrain based on path length correction / Gaofei Yin in IEEE Transactions on geoscience and remote sensing, vol 55 n° 8 (August 2017)
[article]
Titre : Modeling canopy reflectance over sloping terrain based on path length correction Type de document : Article/Communication Auteurs : Gaofei Yin, Auteur ; Ainong Li, Auteur ; Wei Zhao, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 4597 - 4609 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] distorsion du signal
[Termes IGN] figuré du terrain
[Termes IGN] méthode de Monte-Carlo
[Termes IGN] modèle de simulation
[Termes IGN] modèle numérique de surface de la canopée
[Termes IGN] montagne
[Termes IGN] pente
[Termes IGN] réflectance végétaleRésumé : (Auteur) Sloping terrain induces distortion of canopy reflectance (CR), and the retrieval of biophysical variables from remote sensing data needs to account for topographic effects. We developed a 1-D model (the path length correction (PLC) based model) for simulating CR over sloping terrain. The effects of sloping terrain on single-order and diffuse scatterings are accounted for by PLC and modification of the fraction of incoming diffuse irradiance, respectively. The PLC model was validated via both Monte Carlo and remote sensing image simulations. The comparison with the Monte Carlo simulation revealed that the PLC model can capture the pattern of slope-induced reflectance distortion with high accuracy (red band: R2 = 0.88; root-mean-square error (RMSE) = 0.0045; relative RMSE (RRMSE) = 15%; near infrared response (NIR) band: R2 = 0.79; RMSE = 0.041; RRMSE = 16%). The comparison of the PLC-simulated results with remote sensing observations acquired by the Landsat8-OLI sensor revealed an accuracy similar to that with the Monte Carlo simulation (red band: R2 = 0.83; RMSE = 0.0053; RRMSE = 13%; NIR band: R2 = 0.77; RMSE = 0.023; RRMSE = 8%). To further validate the PLC model, we used it to implement topographic normalization; the results showed a large reduction in topographic effects after normalization, which implied that the PLC model captures reflectance variations caused by terrain. The PLC model provides a promising tool to improve the simulation of CR and the retrieval of biophysical variables over mountainous regions. Numéro de notice : A2017-500 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2017.2694483 En ligne : http://dx.doi.org/10.1109/TGRS.2017.2694483 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86442
in IEEE Transactions on geoscience and remote sensing > vol 55 n° 8 (August 2017) . - pp 4597 - 4609[article]Evaluating the performance of using PPK-GPS technique in producing topographic contour map / Ahmed El Shouny in Marine geodesy, vol 40 n° 4 (July 2017)
[article]
Titre : Evaluating the performance of using PPK-GPS technique in producing topographic contour map Type de document : Article/Communication Auteurs : Ahmed El Shouny, Auteur ; Nagy Yakoub, Auteur ; Magdy Hosny, Auteur Année de publication : 2017 Article en page(s) : pp 224 - 238 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] altitude orthométrique
[Termes IGN] analyse comparative
[Termes IGN] carte topographique
[Termes IGN] courbe de niveau
[Termes IGN] données GPS
[Termes IGN] Egypte
[Termes IGN] GPS en mode différentiel
[Termes IGN] Nil (delta du)
[Termes IGN] niveau à bulle
[Termes IGN] post-traitement
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) The Global Positioning System (GPS) is considered as one of the most powerful tools that are used in geodetic works. It is increasingly considered as an alternative tool for conventional surveying techniques. The goal of this research paper is to produce a methodology for generating topographic contour maps using the post-processed kinematic differential GPS technique (PPK-GPS). The performance of this technique is assessed by comparing it with the traditional spirit-leveling technique taking into consideration the accuracy, time, and cost. The study area is located along the Mediterranean coast in the Rosetta area of the middle Delta in Egypt with a total area of about 39 km2. The field work includes 14 control points and about 50,000 PPK observations. In addition, 20 check cross sections that extend along the coastal line from Rosetta to El Burullus cities were observed using both spirit-leveling and GPS-PPK techniques. The results of the comparison indicate that the PPK-GPS technique can be used instead of spirit leveling in producing a topographic contour map with an accuracy of about 20 cm in orthometric height. We find that the PPK-GPS technique reduces the estimated time of leveling works in our study area by about 70%. Numéro de notice : A2017-667 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1080/01490419.2017.1321594 En ligne : https://doi.org/10.1080/01490419.2017.1321594 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=87142
in Marine geodesy > vol 40 n° 4 (July 2017) . - pp 224 - 238[article]Interactive shearing for terrain visualization : an expert study / Jonas Buddeberg in Geoinformatica, vol 21 n° 3 (July - September 2017)PermalinkAppropriation d'outils de géomatique ou de cartographie par des usagers novices / Sandrine Alinat in Cartes & Géomatique, n° 231-232 (mars - août 2017)PermalinkSmart cartographic functionality for improving data visualization in map mashups / Nadia H. Panchaud in Cartographica, vol 52 n° 2 (Summer 2017)PermalinkCartographic continuum rendering based on color and texture interpolation to enhance photo-realism perception / Charlotte Hoarau in ISPRS Journal of photogrammetry and remote sensing, vol 127 (May 2017)PermalinkThe differentiation of point symbols using selected visual variables in the mobile augmented reality system / Łukasz Halik in Cartographic journal (the), Vol 54 n° 2 (May 2017)PermalinkThe effect of spatial distance on the discriminability of colors in maps / Alžběta Brychtová in Cartography and Geographic Information Science, Vol 44 n° 3 (May 2017)PermalinkGrouping rules for effective legend design / Zhe Qin in Cartographic journal (the), Vol 54 n° 1 (February 2017)PermalinkAn improved map-symbol model to facilitate sharing of heterogeneous qualitative map symbols / Mingguang Wu in Cartography and Geographic Information Science, Vol 44 n° 1 (January 2017)PermalinkPermalinkCitizen empowered mapping, ch. 2. Cartographic representation of soundscape: proposals and assessment / Saul Gomez (2017)Permalink