5data&processingservices
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乐鹏，LIESMARS，Wuhan University
Basic WMS
Basic service elements
GetCapabilities operation GetMap operation
乐鹏，LIESMARS，Wuhan University
Queryable WMS
A Layer CRS A horizontal coordinate reference system for the geographic information that serves as the source for a map. Identifier: label or URL
乐鹏，LIESMARS，Wuhan University
Layer properties
Title Name Abstract and KeywordList Style EX_GeographicBoundingBox CRS BoundingBox Scale denominators Sample dimensions MetadataURL Attribution Identifier and AuthorityURL FeatureListURL DataURL
乐鹏，LIESMARS，Wuhan University
Layer attributes
乐鹏，LIESMARS，Wuhan University
GetMap (mandatory)
乐鹏，LIESMARS，Wuhan University
GetMap response
The response to a valid GetMap request
乐鹏，LIESMARS，Wuhan University
Requests of WMS
Which operation is requested. What information is to be shown on the map What portion of the Earth is to be mapped The desired coordinate reference system 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 composite map.
乐鹏，LIESMARS，Wuhan University
5.1.1网络地图服务（WMS）
Overview
Web Map Service operations
乐鹏，LIESMARS，Wuhan University
Overview
A Web Map Service (WMS) produces maps of
Satisfy all the requirements for a basic WMS Support the GetFeatureInfo operation
乐鹏，LIESMARS，Wuhan University
Version numbering and negotiation
Version numbering and negotiation
MIME type “image/gif”, PNG; MIME type “image/png”, JPEG; MIME type “image/jpeg”,
“graphic element” formats, a scale-independent description of the graphic elements to be displayed
shall be a map of the spatially referenced information layer requested, in the desired style, and having the specified coordinate reference system, bounding box, size, format and transparency. In an HTTP environment, the MIME type of the returned value’s Content-type entity header shall match the format of the return value.
Version number form and value, e.g. “1.3.0”
Appearance in requests and in service
metadata Version number negotiation
乐鹏，LIESMARS，Wuhan University
General HTTP request and response rules
乐鹏，LIESMARS，Wuhan University
Web Map Service operations
GetCapabilities obtain service metadata, which is a machinereadable (and human-readable) description of the server’s information content and acceptable request parameter values. GetMap returns a map. GetFeatureInfo provide clients of a WMS with more information about features in the pictures of maps that were returned by previous Map requests.
spatially referenced data dynamically from geographic information. A portrayal 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 (SVG) or Web Computer Graphics Metafile (WebCGM) formats.
Request parameter rules
Parameter names shall not be case sensitive, but
parameter values shall be. Parameters in a request may be specified in any order. Parameters consisting of lists (for example, BBOX, LAYERS and STYLES in WMS GetMap) shall use the comma (“,”) as the separator If a list item value includes a space or comma, it shall be escaped using the URL encoding rules
乐鹏，LIESMARS，Wuhan University
GetFeatureInfo (optional)
Supported for those Layers for which the
attribute queryable="1“ (true) has been defined or inherited. Because the WMS protocol is stateless, the GetFeatureInfo request indicates to the WMS what map the user is viewing by including most of the original GetMap request parameters (all but VERSION and REQUEST).
metadata The BBOX parameter in the GetMap request The BBOX parameter in the map request part of the GetFeatureInfo request
乐鹏，LIESMARS，Wuhan University
乐鹏，LIESMARS，Wuhan University
GetCapabilities Request
乐鹏，LIESMARS，Wuhan University
GetCapabilities Response
Names and titles General service metadata (Service element) Name, Title, Online Resource URL and Abstract, Keyword List, Contact Information, Fees, Access Constraints, and limits on the number of layers in a request or the output size of maps. Capability metadata the actual operations that are supported by the server, the output formats offered for those operations, and the URL prefix for each operation. Layers and styles
HTTP GET and POST Output formats Text output formats, (e.g., XML; MIME type text/xml). map formats “picture” formats, a rectangular pixel array of fixed size.
SVG; MIME type “image/svg+xml”
乐鹏，LIESMARS，Wuhan University
Coordinate systems
A Map CS
A coordinate reference system for a map produced by a WMS. The Map CS is identified by the label “CRS:1”.
空间数据服务和 处理服务
乐鹏
武汉大学测绘遥感信息工程国家重点实验室
5 空间数据服务和处理服务
5.1 空间数据服务
5.1.1网络地图服务（Web Map Service，
WMS）
5.1.2网络要素服务（Web Feature Service，
WFS） 5.1.3 网络覆盖服务（Web Coverage Service，WCS） 5.2 空间信息处理服务
Label namespace: CRS, EPSG and AUTO2 Vertical CRS Temporal CS
乐鹏，ounding boxes
The <BoundingBox> element in the service
Basic WMS
Basic service elements
GetCapabilities operation GetMap operation
乐鹏，LIESMARS，Wuhan University
Queryable WMS
A Layer CRS A horizontal coordinate reference system for the geographic information that serves as the source for a map. Identifier: label or URL
乐鹏，LIESMARS，Wuhan University
Layer properties
Title Name Abstract and KeywordList Style EX_GeographicBoundingBox CRS BoundingBox Scale denominators Sample dimensions MetadataURL Attribution Identifier and AuthorityURL FeatureListURL DataURL
乐鹏，LIESMARS，Wuhan University
Layer attributes
乐鹏，LIESMARS，Wuhan University
GetMap (mandatory)
乐鹏，LIESMARS，Wuhan University
GetMap response
The response to a valid GetMap request
乐鹏，LIESMARS，Wuhan University
Requests of WMS
Which operation is requested. What information is to be shown on the map What portion of the Earth is to be mapped The desired coordinate reference system 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 composite map.
乐鹏，LIESMARS，Wuhan University
5.1.1网络地图服务（WMS）
Overview
Web Map Service operations
乐鹏，LIESMARS，Wuhan University
Overview
A Web Map Service (WMS) produces maps of
Satisfy all the requirements for a basic WMS Support the GetFeatureInfo operation
乐鹏，LIESMARS，Wuhan University
Version numbering and negotiation
Version numbering and negotiation
MIME type “image/gif”, PNG; MIME type “image/png”, JPEG; MIME type “image/jpeg”,
“graphic element” formats, a scale-independent description of the graphic elements to be displayed
shall be a map of the spatially referenced information layer requested, in the desired style, and having the specified coordinate reference system, bounding box, size, format and transparency. In an HTTP environment, the MIME type of the returned value’s Content-type entity header shall match the format of the return value.
Version number form and value, e.g. “1.3.0”
Appearance in requests and in service
metadata Version number negotiation
乐鹏，LIESMARS，Wuhan University
General HTTP request and response rules
乐鹏，LIESMARS，Wuhan University
Web Map Service operations
GetCapabilities obtain service metadata, which is a machinereadable (and human-readable) description of the server’s information content and acceptable request parameter values. GetMap returns a map. GetFeatureInfo provide clients of a WMS with more information about features in the pictures of maps that were returned by previous Map requests.
spatially referenced data dynamically from geographic information. A portrayal 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 (SVG) or Web Computer Graphics Metafile (WebCGM) formats.
Request parameter rules
Parameter names shall not be case sensitive, but
parameter values shall be. Parameters in a request may be specified in any order. Parameters consisting of lists (for example, BBOX, LAYERS and STYLES in WMS GetMap) shall use the comma (“,”) as the separator If a list item value includes a space or comma, it shall be escaped using the URL encoding rules
乐鹏，LIESMARS，Wuhan University
GetFeatureInfo (optional)
Supported for those Layers for which the
attribute queryable="1“ (true) has been defined or inherited. Because the WMS protocol is stateless, the GetFeatureInfo request indicates to the WMS what map the user is viewing by including most of the original GetMap request parameters (all but VERSION and REQUEST).
metadata The BBOX parameter in the GetMap request The BBOX parameter in the map request part of the GetFeatureInfo request
乐鹏，LIESMARS，Wuhan University
乐鹏，LIESMARS，Wuhan University
GetCapabilities Request
乐鹏，LIESMARS，Wuhan University
GetCapabilities Response
Names and titles General service metadata (Service element) Name, Title, Online Resource URL and Abstract, Keyword List, Contact Information, Fees, Access Constraints, and limits on the number of layers in a request or the output size of maps. Capability metadata the actual operations that are supported by the server, the output formats offered for those operations, and the URL prefix for each operation. Layers and styles
HTTP GET and POST Output formats Text output formats, (e.g., XML; MIME type text/xml). map formats “picture” formats, a rectangular pixel array of fixed size.
SVG; MIME type “image/svg+xml”
乐鹏，LIESMARS，Wuhan University
Coordinate systems
A Map CS
A coordinate reference system for a map produced by a WMS. The Map CS is identified by the label “CRS:1”.
空间数据服务和 处理服务
乐鹏
武汉大学测绘遥感信息工程国家重点实验室
5 空间数据服务和处理服务
5.1 空间数据服务
5.1.1网络地图服务（Web Map Service，
WMS）
5.1.2网络要素服务（Web Feature Service，
WFS） 5.1.3 网络覆盖服务（Web Coverage Service，WCS） 5.2 空间信息处理服务
Label namespace: CRS, EPSG and AUTO2 Vertical CRS Temporal CS
乐鹏，ounding boxes
The <BoundingBox> element in the service