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Waiting to know the future: A SLEUTH model forecast of urban growth with real data / G. Manca in Cartographica, vol 47 n° 4 (December 2012)  

Public [article]  inCartographica > vol 47 n° 4 (December 2012) . - pp 250 - 258 Titre : Waiting to know the future: A SLEUTH model forecast of urban growth with real data Type de document : Article/Communication Auteurs : G. Manca, Auteur ; K. Clarke, Auteur Année de publication : 2012 Article en page(s) : pp 250 - 258 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] croissance urbaine [Termes IGN] données démographiques [Termes IGN] données multitemporelles [Termes IGN] Italie [Termes IGN] modèle de simulation [Termes IGN] planification [Termes IGN] prédiction [Termes IGN] Sardaigne [Termes IGN] système d'information géographique [Termes IGN] utilisation du sol Résumé : (Auteur) What is the true value of simulation modelling to urban growth? This article assesses the validity of an integrated approach, based on the SLEUTH Model and land-use planning theory, as used to create an eight-year forecast in 1998. With actual data on the extent of urbanization in 2006 now available, the authors find that the 1998 forecasts were accurate. The case study is located in Macomer, an inland municipality of Sardinia, Italy, an island in the central Mediterranean Sea. Noting that data collection is an essential first step of planning, the authors assess Macomer's land-use history, geography, economy, and demographics as context for more integrated and holistic planning than has been undertaken in the region to date. The 1998 calibration and prediction of the Urban Growth Model, a component of SLEUTH, simulated Macomer's urban growth for the following eight years and has been reviewed and statistically validated. With detailed geographical results, the authors confirm that the 1998 simulation closely reflects real urban growth as of 2006. This finding is particularly notable because urban growth in Sardinia has been slow, and a higher level of accuracy in urban planning is necessary to achieve stronger predictive capability. Numéro de notice : A2012-643 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/carto.47.4.1321 En ligne : http://www.utpjournals.press/doi/full/10.3138/carto.47.4.1321 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32089 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
031-2012041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Geometric rectification of satellite imagery with ground control using space oblique mercator projection theory / L. Ren in Cartography and Geographic Information Science, vol 37 n° 4 (October 2010)  

Public [article]  inCartography and Geographic Information Science > vol 37 n° 4 (October 2010) . - pp 261 - 272 Titre : Geometric rectification of satellite imagery with ground control using space oblique mercator projection theory Type de document : Article/Communication Auteurs : L. Ren, Auteur ; K. Clarke, Auteur ; C. Zhou, Auteur ; et al., Auteur Année de publication : 2010 Article en page(s) : pp 261 - 272 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] correction d'image [Termes IGN] correction géométrique [Termes IGN] géoréférencement [Termes IGN] image IRS [Termes IGN] image panchromatique [Termes IGN] point d'appui [Termes IGN] projection de Mercator oblique Résumé : (Auteur) Precise geometric rectification of satellite imagery normally requires knowing the geodetic location of features identifiable in the image, called ground control points (GCPs). In many cases, however, it is difficult to compute a precise geometric rectification because too few GCPs are available due to the lack of ground data or the nature of the terrain (lakes or oceans, deserts, continuous forest, etc). When too few GCPs are available, Space Oblique Mercator (SOM) projection theory can be applied to provide continuous precise geometric rectification of image tiles or scenes. We use GCPs from adjacent, prior, or subsequent image tiles to create the projection geometry for the intermediate tiles. In this paper, we report on the development of a procedure to implement the use of ancillary GCPs in georectifying under-controlled imagery. To validate our method, a test example was computed using 1999 data obtained by a panchromatic camera on board the Indian Remote Sensing satellite IRS-1C with a spatial resolution of 5.8 m. The testing showed that the precision of geometric rectification in a tile without GCPs is within three pixels (about 17.4 m), and the speed of computation is faster than with traditional methods. Numéro de notice : A2010-538 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1559/152304010793454309 En ligne : https://doi.org/10.1559/152304010793454309 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30730 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-2010041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

vol 36 n° 1 - January 2009 - Autocarto 2008 Research symposium (Bulletin de Cartography and Geographic Information Science) / Cartography and geographic information society  

Public [n° ou bulletin]  est un bulletin de Cartography and Geographic Information Science / Cartography and geographic information society (1999 -)   Titre : vol 36 n° 1 - January 2009 - Autocarto 2008 Research symposium Type de document : Périodique Auteurs : Cartography and geographic information society, Auteur ; K. Clarke, Éditeur scientifique Année de publication : 2009 Langues : Anglais (eng) Descripteur : [Termes IGN] cartographie Numéro de notice : 032-0901 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Numéro de périodique En ligne : http://www.ingentaconnect.com/content/cagis/cagis/2009/00000036/00000001;jsessio [...] Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=21626 [n° ou bulletin]

Contient

• Real-time visualization in operational hydrology through web-based cartography / C. Lienert in Cartography and Geographic Information Science, vol 36 n° 1 (January 2009)  
• An automated method of scale selection and sheet configuration for multiple sheet census maps with Insets / W.G. Thompson in Cartography and Geographic Information Science, vol 36 n° 1 (January 2009)  
• Extracting composite cartographic area features in low-quality maps / S. Leyk in Cartography and Geographic Information Science, vol 36 n° 1 (January 2009)  

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-09011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Spatial resolution and algorithm choice as modifiers of downslope flow computed from digital elevation models / K. Clarke in Cartography and Geographic Information Science, vol 34 n° 3 (July 2007)  

Public [article]  inCartography and Geographic Information Science > vol 34 n° 3 (July 2007) . - pp 215 - 230 Titre : Spatial resolution and algorithm choice as modifiers of downslope flow computed from digital elevation models Type de document : Article/Communication Auteurs : K. Clarke, Auteur ; S.J. Lee, Auteur Année de publication : 2007 Article en page(s) : pp 215 - 230 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] Californie (Etats-Unis) [Termes IGN] écoulement des eaux [Termes IGN] limite de résolution géométrique [Termes IGN] Matlab [Termes IGN] modèle numérique de terrain [Termes IGN] pente [Termes IGN] représentation du relief Résumé : (Auteur) This research investigated the dependence of computing downslope flow from digital elevation models (DEMs) on two basic elements of the flow calculation: the spatial resolution of the DEM and the algorithm used to compute the downslope flow, specifically how it defines topographic slope and aspect. Six algorithms for downslope flow and downslope accumulation were implemented in MATLAB using different assumptions about components of the computation from the terrain analysis literature. We analyzed the results of downslope flow statistically, thresholded the values to yield streams, and compared the different results with the actual surface streams in the National Hydrographic Database. We repeated the computations using DEMs of 3-m, 30-m, and 90-m resolutions, covering a test area near Santa Barbara, California. We conclude that downslope flow computations are overestimates, and that they are fraught with critical algorithmic assumptions and scale effects. They should be approached with great caution in GIS-based analyses. Copyright CaGISociety Numéro de notice : A2007-394 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/152304007781697875 En ligne : https://doi.org/10.1559/152304007781697875 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28757 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-07031	RAB	Revue	Centre de documentation	En réserve L003	Disponible