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Multihulls: Spatial representation and processing with variable shape fidelity, applied to gazetteers / J.T. Hastings in Transactions in GIS, vol 13 n°5-6 (October/december 2009)  

Public [article]  inTransactions in GIS > vol 13 n°5-6 (October/december 2009) . - pp 465 - 480 Titre : Multihulls: Spatial representation and processing with variable shape fidelity, applied to gazetteers Type de document : Article/Communication Auteurs : J.T. Hastings, Auteur Année de publication : 2009 Article en page(s) : pp 465 - 480 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] ensemble convexe [Termes IGN] figure géométrique [Termes IGN] géocodage [Termes IGN] raisonnement spatial [Termes IGN] recherche d'information géographique [Termes IGN] répertoire toponymique [Termes IGN] système d'information géographique [Termes IGN] toponyme Résumé : (Auteur) Spatial processing is increasingly prevalent in the modern computing milieu. In particular, geographic information retrieval and location-based services such as GoogleEarth and MapQuest depend on spatial operations in conjunction with gazetteers to georeference geographic features. However, many gazetteers contain only point locations or simple bounding rectangles, which make for erratic and sometimes poor georeferencing. Convex hulls can provide better georeferencing results at modest computational cost, but their shape fidelity is still erratic. Full GIS capabilities are actually overfit for many geospatial and georeferencing purposes, because of the limited accuracy of the underlying data. The financial and technical demands of GIS also exclude it from many markets. Described here is a new technique, multihulls, based on the iterative refinement of convex hulls. Multihulls achieve arbitrary shape fidelity at a small increment in computational cost, consistent with the data, outside a GIS, making them attractive for many geospatial and georeferencing applications, especially gazetteers. Copyright Blackwell Publishing Numéro de notice : A2009-524 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01174.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01174.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30153 [article]

A GIS-based stochastic approach to generating daytime population distributions for vehicle route planning / K. Lau in Transactions in GIS, vol 13 n°5-6 (October/december 2009)  

Public [article]  inTransactions in GIS > vol 13 n°5-6 (October/december 2009) . - pp 481 - 502 Titre : A GIS-based stochastic approach to generating daytime population distributions for vehicle route planning Type de document : Article/Communication Auteurs : K. Lau, Auteur Année de publication : 2009 Article en page(s) : pp 481 - 502 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] itinéraire [Termes IGN] Melbourne [Termes IGN] milieu urbain [Termes IGN] modèle stochastique [Termes IGN] planification urbaine [Termes IGN] répartition géographique [Termes IGN] réseau routier [Termes IGN] surveillance routière [Termes IGN] transport routier Résumé : (Auteur) This article explores the use of daytime population distributions for vehicle route planning in urban environments when proximity to population is a major consideration. A GIS-based stochastic geocoding algorithm is proposed to generate daytime population distribution patterns using travel survey data. Metropolitan Melbourne in Australia is used as a test case with data collected from the Victorian Activity and Travel Survey between 1994 and 1999. The advantage of employing daytime population distributions for vehicle route planning is then illustrated taking dangerous goods delivery and mobile billboard advertising as examples. Analysis suggests that the proposed algorithm generates population distribution patterns with finer spatial and temporal details than that obtained using other estimation methods. The algorithm also eliminates the problem of over- or under-estimation of population associated with previous attempts using travel survey data and therefore provides more accurate results. Copyright Blackwell Publishing Numéro de notice : A2009-525 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01175.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01175.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30154 [article]

Evaluating user experience of experiential GIS / P. Hodza in Transactions in GIS, vol 13 n°5-6 (October/december 2009)  

Public [article]  inTransactions in GIS > vol 13 n°5-6 (October/december 2009) . - pp 503 - 525 Titre : Evaluating user experience of experiential GIS Type de document : Article/Communication Auteurs : P. Hodza, Auteur Année de publication : 2009 Article en page(s) : pp 503 - 525 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] carte pédologique [Termes IGN] convivialité [Termes IGN] environnement géographique virtuel [Termes IGN] interface utilisateur [Termes IGN] monde virtuel [Termes IGN] réalité virtuelle [Termes IGN] retour d'expérience [Termes IGN] SIG 3D Résumé : (Auteur) This article explores the use of daytime population distributions for vehicle route planning in urban environments when proximity to population is a major consideration. A GIS-based stochastic geocoding algorithm is proposed to generate daytime population distribution patterns using travel survey data. Metropolitan Melbourne in Australia is used as a test case with data collected from the Victorian Activity and Travel Survey between 1994 and 1999. The advantage of employing daytime population distributions for vehicle route planning is then illustrated taking dangerous goods delivery and mobile billboard advertising as examples. Analysis suggests that the proposed algorithm generates population distribution patterns with finer spatial and temporal details than that obtained using other estimation methods. The algorithm also eliminates the problem of over- or under-estimation of population associated with previous attempts using travel survey data and therefore provides more accurate results. Copyright Blackwell Publishing Numéro de notice : A2009-526 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01176.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01176.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30155 [article]