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Minimum distortion pointed-polar projections for world maps by applying graticule transformation / Janos Gyorffy in International journal of cartography, vol 4 n° 2 (June 2018)
[article]
Titre : Minimum distortion pointed-polar projections for world maps by applying graticule transformation Type de document : Article/Communication Auteurs : Janos Gyorffy, Auteur Année de publication : 2018 Article en page(s) : pp 224 - 240 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections
[Termes IGN] carroyage géographique
[Termes IGN] planisphèreRésumé : (Auteur) Both the media and the geosciences often use small-scale world maps for demonstrating global phenomena. The most important demands on the projection of these maps are: (1) the map distortions have to be reduced as much as possible; (2) the outline shape of the mapped Earth must remind the viewer of the Globe. If the map theme to be illustrated requires neither equivalency (nor, which rarely happens, conformality) nor prescriptions for the map graticule, an aphylactic non-conical projection with simultaneously minimized angular and area distortions is advisable. In this paper, a graticule transformation by a parameterizable function helps to convert minimum distortion pointed-polar pseudocylindrical projections for world maps into general non-conical projections with further minimized distortions. The maximum curvature of the outline shape will be moderated at the same time in order to obtain a definitely pointed-polar character. Numéro de notice : A2018-425 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/23729333.2018.1455263 Date de publication en ligne : 07/05/2018 En ligne : https://doi.org/10.1080/23729333.2018.1455263 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90920
in International journal of cartography > vol 4 n° 2 (June 2018) . - pp 224 - 240[article]The development and analysis of quasi-linear map projections / Jonathan Charles Lliffe in Cartography and Geographic Information Science, Vol 45 n° 3 (May 2018)
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Titre : The development and analysis of quasi-linear map projections Type de document : Article/Communication Auteurs : Jonathan Charles Lliffe, Auteur Année de publication : 2018 Article en page(s) : pp 270 - 283 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections
[Termes IGN] algorithme snake
[Termes IGN] facteur d'échelle
[Termes IGN] projection conforme
[Termes IGN] réseau ferroviaireRésumé : (Auteur) Map projections are an essential component of coordinate systems used in applications such as surveying, topographic mapping, and engineering, and care needs to be taken to select ones that minimize distortion for each case. This article explores the selection process for near-linear features on the surface of the Earth and derives limits for the extent of a project that can be projected within specified distortion tolerances. It is then demonstrated that a multifaceted set of projections of the Earth may be used to extend this concept to the mapping of features such as highways and railways that are quasi-linear but do not exactly follow a standard geometrical line (a great circle or a small circle) on the surface of the Earth. A continuous, conformal coordinate system may be derived in such situations, extending to indefinite length and applicable over a swath of several kilometers width, but it cannot be extended to cover situations with extensive variations in height. Instead, the Snake Projection is analyzed, and it is shown that this can be used to develop continuous (non-zonal) projected coordinate systems for major engineering projects extending for hundreds of kilometers and having extensive height ranges. Examples are shown of the application to railway projects. Numéro de notice : A2018-133 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/15230406.2017.1325332 Date de publication en ligne : 19/05/2017 En ligne : https://doi.org/10.1080/15230406.2017.1325332 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89664
in Cartography and Geographic Information Science > Vol 45 n° 3 (May 2018) . - pp 270 - 283[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-2018031 RAB Revue Centre de documentation En réserve L003 Disponible An adaptable equal-area pseudoconic map projection / Daniel "daan" Strebe in Cartography and Geographic Information Science, Vol 43 n° 4 (September 2016)
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Titre : An adaptable equal-area pseudoconic map projection Type de document : Article/Communication Auteurs : Daniel "daan" Strebe, Auteur Année de publication : 2016 Article en page(s) : pp 338 - 345 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections
[Termes IGN] cartographie dynamique
[Termes IGN] géomatique web
[Termes IGN] mise à l'échelle
[Termes IGN] projection conique
[Termes IGN] projection de Bonne
[Termes IGN] projection équivalente
[Termes IGN] web mapping
[Termes IGN] zone d'intérêtRésumé : (Auteur) Equivalence (the equal-area property of a map projection) is important to some categories of maps. However, unlike conformal projections, completely general techniques do not exist for creating new, computationally reasonable equal-area projections. The literature describes many specific equal-area projections and a few equal-area projections that are more or less configurable, but flexibility is still sparse. This work describes a new, highly configurable equal-area projection system consisting of arcs of concentric circles, placing it in the pseudoconic class. The system uses a novel technique to hybridize the Bonne pseudoconic projection and the Albers conic projection, subsuming many existing projections as degenerate cases. With the resulting system and the technique used to develop it, map projection designers will have greater choice in tailoring the projection to the need. The system may be particularly suited to maps that dynamically adapt to changing scale and region of interest, such as required for online maps. Numéro de notice : A2016-418 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/POSITIONNEMENT Nature : Article DOI : 10.1080/15230406.2015.1088800 En ligne : https://doi.org/10.1080/15230406.2015.1088800 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81315
in Cartography and Geographic Information Science > Vol 43 n° 4 (September 2016) . - pp 338 - 345[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-2016041 RAB Revue Centre de documentation En réserve L003 Disponible Some equal-area, conformal and conventional map projections: a tutorial review / Ebrahim Ghaderpour in Journal of applied geodesy, vol 10 n° 3 (September 2016)
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Titre : Some equal-area, conformal and conventional map projections: a tutorial review Type de document : Article/Communication Auteurs : Ebrahim Ghaderpour, Auteur Année de publication : 2016 Article en page(s) : pp 197 – 209 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections
[Termes IGN] projection conforme
[Termes IGN] projection de Gauss
[Termes IGN] projection équivalente
[Termes IGN] projection Universal Transverse MercatorRésumé : (auteur) Map projections have been widely used in many areas such as geography, oceanography, meteorology, geology, geodesy, photogrammetry and global positioning systems. Understanding different types of map projections is very crucial in these areas. This paper presents a tutorial review of various types of current map projections such as equal-area, conformal and conventional. We present these map projections from a model of the Earth to a flat sheet of paper or map and derive the plotting equations for them in detail. The first fundamental form and the Gaussian fundamental quantities are defined and applied to obtain the plotting equations and distortions in length, shape and size for some of these map projections. Numéro de notice : A2016-971 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1515/jag-2015-0033 En ligne : https://doi.org/10.1515/jag-2015-0033 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83678
in Journal of applied geodesy > vol 10 n° 3 (September 2016) . - pp 197 – 209[article]Generalization of the Lambert–Lagrange projection / Sebastian Orihuela in Cartographic journal (the), Vol 53 n° 2 (May 2016)
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Titre : Generalization of the Lambert–Lagrange projection Type de document : Article/Communication Auteurs : Sebastian Orihuela, Auteur Année de publication : 2016 Article en page(s) : pp 158 - 165 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections
[Termes IGN] projection conforme
[Termes IGN] projection conforme de Gauss
[Termes IGN] projection conforme de Lagrange
[Termes IGN] projection conforme de Lambert
[Termes IGN] projection conique
[Termes IGN] projection stéréographiqueRésumé : (Auteur) The Lagrange projection represents conformally the terrestrial globe within a circle. This is achieved by compressing the latitude and longitude and by applying the new coordinates into the equatorial stereographic projection. The same concept can be generalized to any conformal projection, although the application of this technique to other analytical functions is less known. In this work, the general Lambert–Lagrange projection formula is proposed and the application of the modified coordinates is discussed on projections: stereographic, conformal conic and Gauss–Schreiber. In general, the results are merely a curiosity, except for the case of Gauss–Schreiber, where the use of coordinates with altered scale can be applied in the optimization of conformal projections. Numéro de notice : A2016-511 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2015.1108063 En ligne : http://dx.doi.org/10.1080/00087041.2015.1108063 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81582
in Cartographic journal (the) > Vol 53 n° 2 (May 2016) . - pp 158 - 165[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2016021 RAB Revue Centre de documentation En réserve L003 Disponible Projection Wizard – An online map projection selection tool / Bojan Šavrič in Cartographic journal (the), Vol 53 n° 2 (May 2016)PermalinkAdvanced methods for the estimation of an unknown projection from a map / Tomáš Bayer in Geoinformatica, vol 20 n° 2 (April - June 2016)PermalinkPermalinkUser preferences for world map projections / Bojan Šavrič in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)PermalinkDetermination of definitive standard parallels of normal aspect conic projections equidistant along meridians on an old map / Martina Triplat Horvat in International journal of cartography, vol 1 n° 1 (August 2015)PermalinkPermalinkRisques de projections / Françoise de Blomac in DécryptaGéo le mag, n° 162 (01/12/2014)PermalinkProjections cartographiques et systèmes de références / Miljenko Lapaine in Cartes & Géomatique, n° 221 (septembre 2014)PermalinkBlending world map projections with Flex Projector / Bernhard Jenny in Cartography and Geographic Information Science, vol 40 n° 4 (September 2013)PermalinkThe space oblique conic projection / Liucheng Ren in Cartography and Geographic Information Science, vol 40 n° 4 (September 2013)Permalink