1、BRITISH STANDARD Geographic information Web map server interface ICS 35.240.70 BS EN ISO 19128:2008 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSIThis British Standard was published under the authority of the Standards Policy and Strategy Committe
2、e on 24 January 2006 BSI 2009 National foreword The UK participation in its preparation was entrusted to Technical Committee IST/36, Geographic information. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include
3、 all the necessary provisions of a contract. Users are responsible for its correct application. This British Standard is the UK implementation of EN ISO 19128:2008. It is identical with ISO 19128:2005. It supersedes BS ISO 19128:2005, which is withdrawn. Compliance with a British Standard cannot con
4、fer immunity from legal obligations. BS EN ISO 19128:2008 Date Comments This corrigenda renumbers BS ISO 19128:2005 as BS EN ISO 19128:2008 ISBN 978 0 580 59293 5 Amendments/corrigenda issued since publication 30 June 2009 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Unco
5、ntrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO19128 January2008 ICS35.240.70 EnglishVersion GeographicinformationWebmapserverinterface(ISO 19128:2005) InformationgographiqueInterfacedecarteduserveur web(ISO19128:2005) ThisEuropeanStandardwasapprovedbyCENon15December2007.
6、CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropean Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcerningsuchnational standardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyC
7、ENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytranslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCENManagementCentrehasthesamestatusasthe officialversions. CENmembersarethenationalstandardsbodiesofAustr
8、ia,Belgium,Bulgaria,Cyprus,CzechRepublic,Denmark,Estonia,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUR
9、OPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2008CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO19128:2008:E Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled
10、Copy, (c) BSI Foreword The text of ISO 19128:2005 has been prepared by Technical Committee ISO/TC 211 “Geographic information/Geomatics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 19128:2008 by Technical Committee CEN/TC 287 “Geographic Information“
11、, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2008, and conflicting national standards shall be withdrawn at the latest by July 2008. Attention is
12、 drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the fol
13、lowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sl
14、ovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 19128:2005 has been approved by CEN as EN ISO 19128:2008 without any modifications. BS EN ISO 19128:2008 ii Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BS
15、I iii Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSI ivContents Page Introduction v 1 Scope . 1 2 Conformance. 1 2.1 Conformance classes and requirements . 1 2.2 Basic WMS. 1 2.3 Queryable WMS. 1 3 Normative references . 1 4 Terms and definitions.
16、 2 5 Abbreviated terms 3 6 Basic service elements 4 6.1 Introduction . 4 6.2 Version numbering and negotiation . 4 6.3 General HTTP request rules 5 6.4 General HTTP response rules . 7 6.5 Numeric and Boolean values. 7 6.6 Output formats 8 6.7 Coordinate systems 8 6.8 Request parameter rules 12 6.9 C
17、ommon request parameters 13 6.10 Service result 14 6.11 Service exceptions . 14 7 Web Map Service operations. 14 7.1 Introduction . 14 7.2 GetCapabilities (mandatory) 14 7.3 GetMap (mandatory) . 25 7.4 GetFeatureInfo (optional) . 31 Annex A (normative) Conformance tests 34 Annex B (normative) CRS De
18、finitions 37 Annex C (normative) Handling multi-dimensional data . 44 Annex D (normative) Web Map Service profile of ISO 8601. 50 Annex E (normative) XML Schemas. 52 Annex F (normative) UML model 63 Annex G (informative) Web Mapping Examples 68 Annex H (informative) XML examples 71 Bibliography . 76
19、 BS EN ISO 19128:2008 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSI vIntroduction A Web Map Service (WMS) produces maps of spatially referenced data dynamically from geographic information. This International Standard defines a “map” to be a port
20、rayal of geographic information as a digital image file suitable for display on a computer screen. A map is not the data itself. WMS-produced maps are generally rendered in a pictorial format such as PNG, GIF or JPEG, or occasionally as vector-based graphical elements in Scalable Vector Graphics (SV
21、G) or Web Computer Graphics Metafile (WebCGM) formats. This International Standard defines three operations: one returns service-level metadata; another returns a map whose geographic and dimensional parameters are well-defined; and an optional third operation returns information about particular fe
22、atures shown on a map. Web Map Service operations can be invoked using a standard web browser by submitting requests in the form of Uniform Resource Locators (URLs). The content of such URLs depends on which operation is requested. In particular, when requesting a map the URL indicates what informat
23、ion is to be shown on the map, what portion of the Earth is to be mapped, the desired coordinate reference system, and the output image width and height. When two or more maps are produced with the same geographic parameters and output size, the results can be accurately overlaid to produce a compos
24、ite map. The use of image formats that support transparent backgrounds (e.g. GIF or PNG) allows underlying maps to be visible. Furthermore, individual maps can be requested from different servers. The Web Map Service thus enables the creation of a network of distributed map servers from which client
25、s can build customized maps. Illustrative examples of map request URLs and their resulting maps are shown in Annex G. This International Standard applies to a Web Map Service instance that publishes its ability to produce maps rather than its ability to access specific data holdings. A basic WMS cla
26、ssifies its geographic information holdings into “Layers” and offers a finite number of predefined “Styles” in which to display those layers. This International Standard supports only named Layers and Styles, and does not include a mechanism for user-defined symbolization of feature data. NOTE The O
27、pen Geospatial Consortium (OGC) Styled Layer Descriptor (SLD) specification 6 defines a mechanism for user-defined symbolization of feature data instead of named Layers and Styles. In brief, an SLD-enabled WMS retrieves feature data from a Web Feature Service 7 and applies explicit styling informati
28、on provided by the user in order to render a map. BS EN ISO 19128:2008 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSIblank Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSI 1Geographic information
29、Web map server interface 1 Scope This International Standard specifies the behaviour of a service that produces spatially referenced maps dynamically from geographic information. It specifies operations to retrieve a description of the maps offered by a server to retrieve a map, and to query a serve
30、r about features displayed on a map. This International Standard is applicable to pictorial renderings of maps in a graphical format; it is not applicable to retrieval of actual feature data or coverage data values. 2 Conformance 2.1 Conformance classes and requirements This International Standard d
31、efines two conformance classes, one for a basic WMS, and the other for a queryable WMS. Each has two subclasses, one for clients and the other for servers. 2.2 Basic WMS A basic WMS shall support the basic service elements (see Clause 6), the GetCapabilities operation (see 7.2), and the GetMap opera
32、tion (see 7.3). To conform to this International Standard, a basic WMS shall satisfy the requirements of A.1 of the Abstract Test Suite in Annex A. 2.3 Queryable WMS A queryable WMS shall satisfy all the requirements for a basic WMS, and shall also support the GetFeatureInfo operation (see 7.4). To
33、conform to this International Standard, a queryable WMS shall satisfy all requirements of the Abstract Test Suite in Annex A. 3 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For un
34、dated references, the latest edition of the referenced document (including any amendments) applies. ISO 8601:2004, Data elements and interchange formats Information interchange Representation of dates and times ISO 19111, Geographic information Spatial referencing by coordinates ISO 19115:2003, Geog
35、raphic information Metadata EPSG (February 2003), European Petroleum Survey Group Geodesy Parameters, Lott, R., Ravanas, B., Cain, J., Simonson, G, and Nicolai, R., eds., available at IETF RFC 2045 (November 1996), Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bod
36、ies, Freed, N. and Borenstein, N., eds., available at BS EN ISO 19128:2008 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSI2 IETF RFC 2396 (August 1998), Uniform Resource Identifiers (URI): Generic Syntax, Berners-Lee, T., Fielding, N., and Masinter
37、, L., eds., available at IETF RFC 2616 (June 1999), Hypertext Transfer Protocol HTTP/1.1, Gettys, J., Mogul, J., Frystyk, H., Masinter, L., Leach, P., and Berners-Lee, T., eds., available at UCUM, Unified Code for Units of Measure, Schadow, G. and McDonald, C.J. (eds.), version 1.5 XML 1.0, Extensib
38、le Markup Language (XML) 1.0, World Wide Web Consortium Recommendation, Bray, T., Paoli, J., Sperberg-McQueen, C.M., and Maler, E., eds., available at XML Schema, XML Schema Part 1: Structures, World Wide Web Consortium Recommendation, Thompson, H.S., Beech, D., Maloney, M., and Mendelsohn, N., eds.
39、, available at 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 client software component that can invoke an operation from a server 4.2 coordinate reference system coordinate system that is related to the real world by a datum ISO 19111 4.3 c
40、oordinate system set of mathematical rules for specifying how coordinates are to be assigned to points ISO 19111 4.4 geographic information information concerning phenomena implicitly or explicitly associated with a location relative to the Earth ISO 19101 4.5 interface named set of operations that
41、characterize the behaviour of an entity ISO 19119 4.6 layer basic unit of geographic information that may be requested as a map from a server 4.7 map portrayal of geographic information as a digital image file suitable for display on a computer screen 4.8 operation specification of a transformation
42、or query that an object may be called to execute ISO 19119 BS EN ISO 19128:2008 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSI 34.9 portrayal presentation of information to humans ISO 19117 4.10 request invocation of an operation by a client 4.11
43、response result of an operation returned from a server to a client 4.12 server a particular instance of a service 4.13 service distinct part of the functionality that is provided by an entity through interfaces ISO 14252 4.14 service metadata metadata describing the operations and geographic informa
44、tion available at a server 5 Abbreviated terms CDATA XML Character Data CRS Coordinate Reference System CS Coordinate System DCP Distributed Computing Platform DTD Document Type Definition EPSG European Petroleum Survey Group GIF Graphics Interchange Format GIS Geographic Information System HTTP Hyp
45、ertext Transfer Protocol IANA Internet Assigned Numbers Authority IERS International Earth Rotation Service IETF Internet Engineering Task Force ITRF International Terrestrial Reference Frame ITRS IERS Terrestrial Reference System BS EN ISO 19128:2008 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STAN
46、DARDS, 02/11/2009 06:49, Uncontrolled Copy, (c) BSI4 JPEG Joint Photographic Experts Group MIME Multipurpose Internet Mail Extensions NAD North American Datum OGC Open GIS Consortium PNG Portable Network Graphics RFC Request for Comments SVG Scalable Vector Graphics UCUM Unified Code for Units of Me
47、asure URL Uniform Resource Locator WebCGM Web Computer Graphics Metafile WCS Web Coverage Service WFS Web Feature Service WGS World Geodetic System WMS Web Map Service XML Extensible Markup Language 6 Basic service elements 6.1 Introduction This clause specifies aspects of Web Map Server behaviour t
48、hat are independent of particular operations or are common to several operations. 6.2 Version numbering and negotiation 6.2.1 Version number form and value The Web Map Service (WMS) defines a protocol version number. The version number applies to the XML schema and the request encodings defined in this International Standard. The version number contains three non-negative integers, separated by decimal points, in the form “x.y.z”. The numbers “y” and “z” shall not exceed 99. Implementations of this International Standard shall use the value “1.3.0” as the protocol v
