Wikipedia:Graphics Lab/Resources/QGIS/Reprojection: Difference between revisions

Revision as of 11:42, 11 August 2012

Latest revision as of 18:51, 20 November 2021

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{{stub}}

{{in progress|—Contribute to this tutorial by completing one section welcome !}}

== OpenStreetMaps data importation ==

[[File:Kilauea_caldeira_topographic_map-fr.svg|thum|right|300px|Kilauea with OSM data for roads]]

:{{waiting}} → waiting a volunteer, source: [[:fr:Wikipédia:Atelier_graphique/Didacticiels_cartographiques/Didacticiel_de_création_de_carte_avec_QGIS#T.C3.A9l.C3.A9chargement_des_donn.C3.A9es_compl.C3.A9mentaires|This French section]].

;Concept

For small area from villages to towns to small states (< 200 x 200 km), it is often great to add roads, railways, buildings areas provided by OSM.

;Import OSM data to QGis

;Applying colormaps

== Projection (0%) ==

:{{waiting}} → waiting a volunteer

* [http://forum.qgis.org/viewtopic.php?f=2&t=8712 Raster layer to Robinson]

[[File:Equirectangular projection SW.jpg|300px|thumb|Equirectangular projection of the world; the standard parallel is the equator (plate carrée projection).]]

[[Image:Tissot indicatrix world map equirectangular proj.svg|thumb|right|300px|The equirectangular projection with [[Tissot's indicatrix]] of deformation]]

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;Reproject a vector layer

{{stub}}

[[National Geographic Society]] et le [[National Geographic]] préfèrent aujourd'hui la. Pour une carte de la France métropolitaine, la projection officielle est la [[Projection conique conforme de Lambert|Lambert-93]] <ref>[http://www2.equipement.gouv.fr/bulletinofficiel/fiches/bo200024/a0240017.htm décret du 26 décembre 2000]</ref>.

;Frequent projections

{{main|List of National Coordinate Reference Systems}}

* QGIS default, lat/long, world: {{green|'''WGS84 lat/lon (EPSG:4326)'''}}

* [[National Geographic]], [[Winkel tripel projection]]<ref>{{web|url=http://www.winkel.org/other/Winkel%20Tripel%20Projections.htm|titre=Winkel Tripel Projections}}</ref><ref>{{web|url=http://en.academic.ru/dic.nsf/enwiki/3804244|titre=Winkel tripel projection}}</ref>, world:

* USA, standard:

* France (metropole), [[Lambert conformal conic projection|Lambert-93]], standard: {{green|'''WGS84 Lambert-93 (EPSG:2154) id:145}}<!--

Lambert 93 (IGNF:LAMB93) id:10089

Lambert 1993 (EPSG:3057) id:1020

-->

* China, [[Lambert Conformal Conic]]<ref>http://sedac.ciesin.columbia.edu/china/admin/bnd90/bnd90desc.html</ref>:

== Links ==

* [[Liste of National Coordinate Reference Systems]]

== References ==

<references />

{{Digital cartography tutorials}}

{{summarizationCollapse|title=|1=

== (I should read before writing) ==

Read:

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# http://www.qgis.org/wiki/Users_Corner

# [[:En:User:Captain_Blood/GMT_Example]]

{{[[:fr:Wikipédia:Atelier graphique/Didacticiels cartographiques/Didacticiels pour la cartographie numérique géoréférencée}}]]

Travaux impressionnant: