{"id":853,"date":"2025-11-04T11:36:10","date_gmt":"2025-11-04T10:36:10","guid":{"rendered":"https:\/\/dev.datagrandest.fr\/site\/?page_id=853"},"modified":"2026-04-16T12:11:55","modified_gmt":"2026-04-16T10:11:55","slug":"les-flux-de-donnees","status":"publish","type":"page","link":"https:\/\/www.datagrandest.fr\/site\/les-flux-de-donnees\/","title":{"rendered":"Les flux de donn\u00e9es"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":12,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"src\/controllers\/models\/flex.php","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"source":[],"thematique_globale":[],"class_list":["post-853","page","type-page","status-publish","hentry"],"acf":{"glo_image":"","glo_intro":"","glo_car_surcharge_titre":"","glo_car_surcharge_lien":"","cms_contenus_flexibles":[{"acf_fc_layout":"flex_texte_libre","show_title":true,"titre_de_section":"D\u00e9finition et int\u00e9r\u00eat des flux de donn\u00e9es","contenu":"La plateforme DataGrandEst permet de diffuser des donn\u00e9es g\u00e9ographiques sous forme de flux. Les donn\u00e9es sont stock\u00e9es et diffus\u00e9es par un serveur cartographique.\r\n\r\nLes services web obtenus (WMS, WFS et WMTS) respectent des standards internationaux (notamment OGC) permettant ainsi d'assurer une interop\u00e9rabilit\u00e9 entre applications et serveurs de donn\u00e9es.\r\n<h3>Les flux standardis\u00e9s propos\u00e9s DataGrandEst sont :<\/h3>\r\n<ul>\r\n \t<li><strong>WMS\u00a0<\/strong>(ou Web Map Service): Consutaltion des donn\u00e9es sous forme d'images directement g\u00e9n\u00e9r\u00e9es \u00e0 partir des donn\u00e9es (vecteur ou raster)<\/li>\r\n \t<li><strong>WMTS\u00a0<\/strong>(ou Web Map Tile Service) : Consultation des donn\u00e9es sous forme d'images tuil\u00e9es pr\u00e9calcul\u00e9es \u00e0 certaines \u00e9chelles<\/li>\r\n \t<li><strong>WFS\u00a0<\/strong>(ou Web Feature Service) : Consultation des donn\u00e9es vectorielles, permettant de t\u00e9l\u00e9charger et de manipuler les donn\u00e9es (requetes, symbologies)<\/li>\r\n \t<li><strong>WCS\u00a0<\/strong>(ou Web Coverage Service) : T\u00e9l\u00e9chargement de donn\u00e9es raster, n\u00e9cessite un acc\u00e8s authentifi\u00e9<\/li>\r\n \t<li><strong>CSW\u00a0<\/strong>(ou Catalog Service for the Web) :\u00a0Consultation de m\u00e9tadonn\u00e9es sous forme de catalogue web.<\/li>\r\n<\/ul>\r\n<h3>L'utilit\u00e9 des flux de donn\u00e9es est multiple :<\/h3>\r\n<ul>\r\n \t<li>Ils \u00e9vitent de dupliquer et de t\u00e9l\u00e9charger inutilement des donn\u00e9es disponibles en ligne.<\/li>\r\n \t<li>Ils r\u00e9duisent les risques d'usage de donn\u00e9es obsol\u00e8tes. En effet, les donn\u00e9es sont mises \u00e0 jour pour tous les utilisateurs en une fois au niveau des serveurs de DataGrandEst.<\/li>\r\n \t<li>Ils permettent une administration centralis\u00e9e des donn\u00e9es, au lieu d'\u00eatre r\u00e9alis\u00e9e par chacun des utilisateurs ind\u00e9pendament.<\/li>\r\n \t<li>Ils \u00e9vitent d'\u00eatre d\u00e9pendant d'un \u00e9diteur de logiciel sp\u00e9cifique puisque les standards sur lesquels ils reposent sont reconnus par la plupart des outils SIG actuels.<\/li>\r\n<\/ul>\r\n<h2>Comment utiliser un flux de donn\u00e9es<\/h2>\r\nL'usage des flux WMS, WMTS et WFS est tr\u00e8s r\u00e9pandu et bien g\u00e9r\u00e9 par la plupart des outils SIG actuels.\r\n\r\nVous trouverez de l'aide sur ce sujet notamment via les ressources suivantes :\r\n<ul>\r\n \t<li>Sur la\u00a0<a href=\"https:\/\/www.datagrandest.fr\/site\/formations\/mettre-en-ligne-ses-donnees-geographiques-sur-la-plateforme-geograndest\/\">page formation de DataGrandEst<\/a><\/li>\r\n \t<li>Sur le\u00a0<a href=\"https:\/\/geoservices.ign.fr\/documentation\/services\/api-et-services-ogc\/images-wms-ogc\">site de l'IGN consacr\u00e9e \u00e0 l'usage des flux du G\u00e9oportail<\/a><\/li>\r\n \t<li>Des\u00a0<a href=\"https:\/\/geoservices.ign.fr\/documentation\/services\/utilisation-sig\/tutoriel-qgis\">tutoriaux sur QGIS<\/a><\/li>\r\n \t<li>Des\u00a0<a href=\"https:\/\/geoservices.ign.fr\/documentation\/services\/utilisation-sig\/tutoriel-arcgis\">tutoriaux sur ArcGIS<\/a><\/li>\r\n<\/ul>\r\nNotez que les flux passent par une connexion internet. Vous devez avoir correctement param\u00e9tr\u00e9 votre outil SIG pour qu'il reconnaisse le proxy internet de votre organisme le cas \u00e9ch\u00e9ant.\r\n\r\nPour plus d'information sur les donn\u00e9es et services (WMS\/WFS) n'h\u00e9sitez pas \u00e0 consulter le<a href=\"https:\/\/www.datagrandest.fr\/datahub\/news\">\u00a0catalogue f\u00e9d\u00e9rateur de\u00a0m\u00e9tadonn\u00e9es DataGrandEst<\/a>","couleur_de_fond":"transparent","taille_de_la_zone":"large-content","position_texte":"center","image_de_fond":""}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les flux de donn\u00e9es - DataGrandEst<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.datagrandest.fr\/site\/les-flux-de-donnees\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les flux de donn\u00e9es - 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