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Using integrated visualization techniques to investigate associations between cardiovascular health outcomes and residential migration in Auckland, New Zealand / Jinfeng Zhao in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

Public [article]  inCartography and Geographic Information Science > Vol 42 n° 5 (November 2015) . - pp 381 - 397 Titre : Using integrated visualization techniques to investigate associations between cardiovascular health outcomes and residential migration in Auckland, New Zealand Type de document : Article/Communication Auteurs : Jinfeng Zhao, Auteur ; Daniel Exeter, Auteur ; Grant Hanham, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 381 - 397 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique [Termes IGN] analyse de données [Termes IGN] analyse multicritère [Termes IGN] cartogramme [Termes IGN] migration humaine [Termes IGN] Nouvelle-Zélande [Termes IGN] santé [Termes IGN] visualisation cartographique Résumé : (Auteur) The negative health effects of living in a deprived neighborhood may influence the incidence of cardiovascular disease (CVD), even after controlling for sociodemographic characteristics, and there is evidence that residential mobility is associated with mortality and morbidity rates. However, few studies have investigated the application of integrated visualization techniques and statistic modeling to communicate the association between residential mobility and cardiovascular outcomes. We focus on examining the association between cardiovascular health outcomes and patient migration in Auckland, New Zealand, in two ways. First, we assess the association between all-cause mortality among patients with CVD and deprivation mobility, controlling for age, gender and ethnicity using multiple logistic regression at the individual level, and then visualize the results. Second, we identify aggregated geographical patterns of prevalence of CVD stratified using migration status, area-deprivation, ethnicity, and geographical area using kriskograms, ring-cartograms, and ringmaps to visualize the results. We reveal distinct patterns for purposefully selected subgroups and highlight disparities by geographic area, deprivation, and ethnicity before discussing the implications of our findings in relation to migration and health outcomes. Numéro de notice : A2015-556 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2015.1013567 En ligne : https://doi.org/10.1080/15230406.2015.1013567 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77594 [article]

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User preferences for world map projections / Bojan Šavrič in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

Public [article]  inCartography and Geographic Information Science > Vol 42 n° 5 (November 2015) . - pp 398 - 409 Titre : User preferences for world map projections Type de document : Article/Communication Auteurs : Bojan Šavrič, Auteur ; Bernhard Jenny, Auteur ; Denis White, Auteur ; Daniel R. Strebe, Auteur Année de publication : 2015 Article en page(s) : pp 398 - 409 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections [Termes IGN] échelle cartographique [Termes IGN] planisphère [Termes IGN] projection carte plate carrée [Termes IGN] projection de Robinson [Termes IGN] utilisateur Résumé : (Auteur) Many small-scale map projections exist, and they have different shapes and distortion characteristics. World map projections are mainly chosen based on their distortion properties and the personal preferences of cartographers. Very little is known about the map projection preferences of map-readers; only two studies have addressed this question so far. This article presents a user study among map-readers and trained cartographers that tests their preferences for world map projections. The paired comparison test of nine commonly used map projections reveals that the map-readers in our study prefer the Robinson and Plate Carrée projections, followed by the Winkel Tripel, Eckert IV, and Mollweide projections. The Mercator and Wagner VII projections come in sixth and seventh place, and the least preferred are two interrupted projections, the interrupted Mollweide and the interrupted Goode Homolosine. Separate binominal tests indicate that map-readers involved in our study seem to like projections with straight rather than curved parallels and meridians with elliptical rather than sinusoidal shapes. Our results indicate that map-readers prefer projections that represent poles as lines to projections that show poles as protruding edges, but there is no clear preference for pole lines in general. The trained cartographers involved in this study have similar preferences, but they prefer pole lines to represent the poles, and they select the Plate Carrée and Mercator projections less frequently than the other participants. Numéro de notice : A2015-557 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2015.1014425 En ligne : https://doi.org/10.1080/15230406.2015.1014425 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77595 [article]

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Plan oblique relief for web maps / Bernhard Jenny in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

Public [article]  inCartography and Geographic Information Science > Vol 42 n° 5 (November 2015) . - pp 410 - 418 Titre : Plan oblique relief for web maps Type de document : Article/Communication Auteurs : Bernhard Jenny, Auteur ; Jonas Buddeberg, Auteur ; Charlotte Hoarau , Auteur ; Johannes Liem, Auteur Année de publication : 2015 Article en page(s) : pp 410 - 418 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique [Termes IGN] cartographie 3D [Termes IGN] géomatique web [Termes IGN] interface web [Termes IGN] OpenLayers [Termes IGN] webGL Résumé : (Auteur) Plan oblique relief shows terrain with a side view on a two-dimensional map, resulting in visualizations where the third dimension of the terrain is more explicit than on traditional two-dimensional maps. Existing plan oblique maps are static: the angle of terrain inclination is not adjustable and the orientation of plan oblique inclination does not change with the orientation of the map. This article introduces two complementary methods that address these issues by using the 3D graphics pipeline to render plan oblique relief for tile-based web maps. The goal is to allow users to adjust the terrain inclination and map rotation angles to better visualize the third dimension of the terrain. The first method pre-renders plan oblique tiles with a server-side application. The tiles are visualized with a standard web mapping framework. The second method renders plan oblique relief on-the-fly in a web browser using WebGL and a customized version of OpenLayers 3, which enables users to select arbitrary terrain inclination and map rotation angles. The second method uses a tiled digital terrain model that is loaded by the web browser. The browser applies the plan oblique transformation, computes a shaded relief, and texturizes the terrain with tiled map layers. Numéro de notice : A2015-558 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/15230406.2015.1015169 Date de publication en ligne : 25/02/2015 En ligne : https://doi.org/10.1080/15230406.2015.1015169 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77597 [article]

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Development of a software tool as an introduction to Geospatial Information Technology based on geospatial standards / Morishige Ota in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

Public [article]  inCartography and Geographic Information Science > Vol 42 n° 5 (November 2015) . - pp 419 - 434 Titre : Development of a software tool as an introduction to Geospatial Information Technology based on geospatial standards Type de document : Article/Communication Auteurs : Morishige Ota, Auteur ; Reese W. Plews, Auteur Année de publication : 2015 Article en page(s) : pp 419 - 434 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] données localisées [Termes IGN] logiciel libre [Termes IGN] outil logiciel [Termes IGN] technologie Résumé : (Auteur) This paper presents the development of an “all-in-one” software tool, called “gittok” [pronounced: jee-tock, ʤiːtɒk] that assists both higher education students and industry professionals in learning about Geospatial Information Technology (GIT) based on the concepts of geospatial standards. While there are a number of popular and advanced open source Geographic Information Science (GIS) systems and tools, the software designed in this research is not a GIS, but an education assistance tool that helps to teach the basic concepts of GIT. Gittok was designed around the basic concept of using geospatial standards to help with learning the knowledge areas of GIT. Gittok allows students to acquire and edit geospatial data directly in compliance with an application schema. Users of the gittok software can gain an overview of GIT and directly experience, through “hands-on” operation, spatial analysis, XML data exchange, geo-library management and map design. Therefore, the authors hope that gittok will become a popular and useful tool for GIT education. Numéro de notice : A2015-559 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2015.1031701 En ligne : https://doi.org/10.1080/15230406.2015.1031701 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77599 [article]

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A rapid approach for automated comparison of independently derived stream networks / Lauwrence V. Stanislawski in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

Public [article]  inCartography and Geographic Information Science > Vol 42 n° 5 (November 2015) . - pp 435 - 448 Titre : A rapid approach for automated comparison of independently derived stream networks Type de document : Article/Communication Auteurs : Lauwrence V. Stanislawski, Auteur ; Barbara P. Buttenfield, Auteur ; Ariel Doumbouya, Auteur Année de publication : 2015 Article en page(s) : pp 435 - 448 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] analyse comparative [Termes IGN] base de données hydrographiques [Termes IGN] bassin hydrographique [Termes IGN] cartographie des flux [Termes IGN] modélisation spatiale [Termes IGN] réseau hydrographique Résumé : (Auteur) This paper presents an improved coefficient of line correspondence (CLC) metric for automatically assessing the similarity of two different sets of linear features. Elevation-derived channels at 1:24,000 scale (24K) are generated from a weighted flow-accumulation model and compared to 24K National Hydrography Dataset (NHD) flowlines. The CLC process conflates two vector datasets through a raster line-density differencing approach that is faster and more reliable than earlier methods. Methods are tested on 30 subbasins distributed across different terrain and climate conditions of the conterminous United States. CLC values for the 30 subbasins indicate 44–83% of the features match between the two datasets, with the majority of the mismatching features comprised of first-order features. Relatively lower CLC values result from subbasins with less than about 1.5 degrees of slope. The primary difference between the two datasets may be explained by different data capture criteria. First-order, headwater tributaries derived from the flow-accumulation model are captured more comprehensively through drainage area and terrain conditions, whereas capture of headwater features in the NHD is cartographically constrained by tributary length. The addition of missing headwaters to the NHD, as guided by the elevation-derived channels, can substantially improve the scientific value of the NHD. Numéro de notice : A2015-560 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2015.1060869 En ligne : https://doi.org/10.1080/15230406.2015.1060869 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77602 [article]

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Exploring the impact of dasymetric refinement on spatiotemporal small area estimates / Barbara P. Buttenfield in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

Public [article]  inCartography and Geographic Information Science > Vol 42 n° 5 (November 2015) . - pp 449 - 459 Titre : Exploring the impact of dasymetric refinement on spatiotemporal small area estimates Type de document : Article/Communication Auteurs : Barbara P. Buttenfield, Auteur ; Matt Ruther, Auteur ; Stefan Leyk, Auteur Année de publication : 2015 Article en page(s) : pp 449 - 459 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] analyse comparative [Termes IGN] analyse diachronique [Termes IGN] démographie [Termes IGN] données spatiotemporelles [Termes IGN] figuration de la densité [Termes IGN] interpolation [Termes IGN] méthodologie Résumé : (Auteur) Comparing demographic small area estimates across multiple time periods is hindered by boundary changes in census enumeration units. Areal interpolation can resolve temporal incompatibilities, but underlying assumptions of uniform population density within units is sometimes flawed and results in distorted estimates. Dasymetric modeling refines spatial precision by limiting areal interpolation to the most likely residential areas. Here, a systematic examination of the impacts of dasymetric refinement on temporal interpolation accuracy compares errors that emerge as a consequence of differing time spans. This paper compares the accuracy of three commonly utilized methods of areal interpolation for temporal analysis of population data over the 1990–2010 decades. It examines whether multi-temporal dasymetric refinement prior to areal interpolation improves the accuracy of small area estimates, comparing two different demographic contexts. Data sets include tract-level demography exhibiting dramatic growth (Las Vegas, Nevada), and relative stability (Pittsburgh, Pennsylvania). Areal interpolation with and without the dasymetric refinement is validated using block level data. The dasymetrically refined target density weighting (TDW) provides the overall best performance for the 2000 source data and the expectation maximization (EM) method gives the overall best performance for the 1990 source data; effects of refinement are more prominent in areas of faster population change. Numéro de notice : A2015-561 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2015.1065206 En ligne : https://doi.org/10.1080/15230406.2015.1065206 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77604 [article]

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