Web Map Service: Difference between revisions

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{{Short description|Technical standard for Geographical Information System}}

{{infobox file format

| name = WMS

| icon =

| extension =

| mime =

| owner = [[Open Geospatial Consortium|OGC]]

| genre = [[Container format (digital)|Container format]]

| released = 1999<ref name="release" />

| container for = [[XML]], [[JPEG]], [[Portable Network Graphics|PNG]], others

| open = Yes, with Copyright<ref>{{cite web|title=OGC Document Notice|url=http://www.opengeospatial.org/ogc/document|access-date=2 February 2011}}</ref>

| url = {{official URL}}

}}

A '''Web Map Service''' ('''WMS''') is a standard protocol developed by the [[Open Geospatial Consortium]] in 1999 for serving [[georeference]]d map images over the Internet.<ref name="release">{{cite book |last=Scharl |first=Arno |author2=Klaus Tochtermann |author2-link=Klaus Tochtermann |title=The Geospatial Web: How Geobrowsers, Social Software and the Web 2.0 are Shaping the Network Society |publisher=Springer |year=2007 |isbn=978-1-84628-826-5 |pages=225}}</ref> These images are typically produced by a [[mapping server|map server]] from data provided by a [[Geographic Information System|GIS]] database.<ref>{{cite web |url=http://www.opengeospatial.org/standards/wms |title=Web Map Service |publisher=Open Geospatial Consortium |access-date=2009-03-23}}</ref>

==History==

is a standard protocol developed by the Open Geospatial Consortium in 1999 for serving georeferenced map images over the Internet. These imag

The [[Open Geospatial Consortium]] (OGC) became involved in developing standards for web mapping after a paper was published in 1997 by Allan Doyle, outlining a "WWW Mapping Framework".<ref>{{cite news |author=Doyle, Allan |year=1997 |title=WWW Mapping Framework |publisher=Open GIS Consortium }}</ref> The OGC established a task force to come up with a strategy,<ref>{{cite news |author=Cuthbert, A. |title=User Interaction with Geospatial Data |year=1998 |publisher=Open GIS Consortium}}</ref> and organized the "Web Mapping Testbed" initiative, inviting pilot web mapping projects that built upon idea=ideas Webby MapDoyle Serviceand Implementationthe SpecificationOGC –task Version 1force.3 Results of the pilot projects were demonstrated in September 1999, and a second phase of pilot projects ended in April 2000.0<ref>{{cite book |dateauthor=2004Peng, Zhong-01Ren |author2=Ming-20Hsiang Tsou |title=Internet GIS |publisher=OpenJohn GeospatialWiley Consortiumand Sons |access-dateyear=2010-10-262003 |pages=191}}</ref>

The Open Geospatial Consortium released WMS version 1.0.0 in April 2000,<ref>{{cite web |url=http://portal.opengeospatial.org/files/?artifact_id=7196 |title=OpenGIS Web Map Server Interface Implementation Specification (Revision 1.0.0) |date=2000-04-19 |publisher=Open Geospatial Consortium |access-date=2009-04-10}}</ref> followed by version 1.1.0 in June 2001,<ref>{{cite web |url=http://portal.opengeospatial.org/files/?artifact_id=1058 |title=Web Map Service Implementation Specification Version 1.1.0 |date=2001-06-21 |publisher=Open Geospatial Consortium |access-date=2009-04-10}}</ref> and version 1.1.1 in January 2002.<ref>{{cite web |url=http://portal.opengeospatial.org/files/?artifact_id=1081&version=1&format=pdf |title=Web Map Service Implementation Specification – Version 1.1.1 |date=2002-01-16 |publisher=Open Geospatial Consortium |access-date=2009-04-10}}</ref> The OGC released WMS version 1.3.0 in January 2004.<ref>{{cite web |url=http://portal.opengeospatial.org/files/?artifact_id=14416 |title= Web Map Service Implementation Specification – Version 1.3.0 |date=2004-01-20 |publisher=Open Geospatial Consortium |access-date=2010-10-26}}</ref>

ypically produced by a map server from data <span lang="ab" dir="ltr">provided</span> by a GIS database.

==History==

The [[Open Geospatial Consortium]] (OGC) became involved in developing standards for web mapping after a paper was published in 1997 by Allan Doyle, outlining a "WWW Mapping Framework".<ref>{{cite news |author=Doyle, Allan |year=1997 |title=WWW Mapping Framework |publisher=Open GIS Consortium }}</ref> The OGC established a task force to come up with a strategy,<ref>{{cite news |author=Cuthbert, A. |title=User Interaction with Geospatial Data |year=1998 |publisher=Open GIS Consortium}}</ref> and organized the "Web Mapping Testbed" initiative, inviting pilot web mapping projects that built upon idea= Web Map Service Implementation Specification – Version 1.3.0 |date=2004-01-20 |publisher=Open Geospatial Consortium |access-date=2010-10-26}}</ref>

==Requests==

WMS specifies a number of different request types, two of which are required by aavailableany layersWMS (mapserver:<ref>{{cite boundingweb box,|url=http://mapserver.org/ogc/wms_server.html coordinate|title=WMS referenceServer systems,|publisher=Mapserver [[Uniform resource identifier|URI]] of the data and whether the layer is mostly opaque or not)access-date=2009-04-10}}</ref>

* GetCapabilities – returns parameters about the WMS (such as map image format and WMS version compatibility) and the available layers (map bounding box, coordinate reference systems, [[Uniform resource identifier|URI]] of the data and whether the layer is mostly opaque or not)

* GetMap – returns a map image. Parameters include: width and height of the map, coordinate reference system, rendering style, image format

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* GetFeatureInfo – if a layer is marked as 'queryable' then you can request data about a coordinate of the map image.

* DescribeLayer – returns the feature types of the specified layer or layers, which can be further described using [[Web Feature Service|WFS]] or [[Web Coverage Service|WCS]] requests. This request is dependent on the Styled Layer Descriptor (SLD) Profile of WMS.<ref>{{cite web |url=http://www.opengeospatial.org/standards/sld |title=Styled Layer Descriptor (SLD) Profile of the OpenGIS Web Map Service |publisher=OGC |access-date=2015-07-01}}</ref>

* GetLegendGraphic – returnreturns an image of the map's legend image, giving a visual guide to map elements.

All communication is served through [[HTTP]].

==Map image==

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*[[Autodesk]]'s Infrastructure Map Server

*[[Manifold System]]

*[[MapTiler|MapTiler Server]]

*[[Luciad]]'s LuciadLightspeed and LuciadFusion products<ref name="Luciad solutions">[http://www.luciad.com/solutions – Luciad solutions]</ref>