GIServer - WMS Request Parameters

Original File	wmsparam.htm
Abstract	This web page sumarizes the Web Map server parameters used by GIServer.
Author	Pedro Pereira Gonçalves (email)
Last Change
History	2002-03-07 : Some examples links added 2001-11-30 : File Created
Index Page	GIServer tutorial OpenGIS : home page and Web Map Server specification 1.1.0 (pdf , rtf)
Important Links:

A GIServer request, in an HTTP GET or POST request, is packaged (RFC 2616) as a prefix with the server name followed by a set of name/value pairs. The parameter names are not case sensitive but the parameter values are case sensitive and can be specified in any order. The general request is composed of OpenGIS parameters and specific GIServer parameters (check out About GIServer Parameters).

The WMS following parameters are defined (OpenGIS, 2000 and 2001):

VERSION
Defines the request version.
REQUEST
Defines the type of REQUEST. Valid values are GETMAP, GETCAPABILITES, AND GETFEATUREINFO.
An example will be available soon
LAYERS
List of one or more information LAYERS to be requested.
See also: Requesting Web Map Server Layers
STYLES
List of one or more STYLES to be used to the requested layers.
See also: Requesting a Map
STYLES
List of one or more STYLES to be used to the requested layers.
See also: Requesting a Map
SRS
Defines the Spatial Reference System (projection or datum) that will be used to access or draw the information requested
See also: Suppport for Geographic Transformations
BBOX
Sets the geographic box of the request
See also: Requesting a Map, Using Mouse Events, Requesting Web Map Server Layers
WIDTH
Defines the WIDTH of the map’s bitmap.
HEIGHT
Defines the HEIGHT of the map’s bitmap.
FORMAT
Defines the FORMAT of the map's bitmap in the MIME-type format
See also: The WMS Format parameter and the implication of cascading requests in GIServer
TRANSPARENT
Defines if the image will be drawn with TRANSPARENT background.
BGCOLOR
Defines the color of the background.
EXCEPTIONS
Defines the server’s behavior if an EXCEPTIONS occurs.
TIME
Defines the temporal dimension of the requested layers.
See also: Requesting Web Map Server Temporal Layers
ELEVATION
Defines the elevation dimension of the requested layers.