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OGC WFS

The Open Geospatial Consortium (OGC) Web Feature Service (WFS) Implementation Specification allows a client to retrieve geospatial data encoded in Geography Markup Language (GML) from multiple Web Feature Services. The specification defines interfaces for data access and manipulation operations on geographic features, using HTTP as the distributed computing platform. Via these interfaces, a Web user or service can combine, use and manage geodata -- the feature information behind a map image -- from different sources.

SIS can act as a client, accessing any OGC compliant WFS service allowing querying and retrieval of encoded GML features. Cadcorp GeognoSIS and Cadcorp ISAPI can act as OGC compliant WFS services allowing any complaint client to access to the WFS service.

This is a memory based dataset.

Arguments to CreateDataSourceOverlay API Method

clsDataSource$
- WFSDataSource

params$
- [GetFeaturesURI=uri,][DescribeFeatureTypeURI=uri,][PostData=httpdata,][OverlayName=name,][RequestMethod=post|get,][Validate=true|false]
  
  GetFeaturesURI
  The URL of the OGC Web Feature Server GetFeatures request. The default value is "".
  
  DescribeFeatureTypeURI
  The URL of the OGC Web Feature Server DescribeFeatureType request. The default value is "".
  
  PostData
  If the RequestMethod is "post", then this is the HTTP POST data for the request.
  
  OverlayName
  The overlay name to be used in SIS.
  
  RequestMethod
  Specifies which HTTP request method to use, either "post" or "get".
  
  Validate
  Specifies whether or not to validate the downloaded GML.

See also: www.opengeospatial.org

Compatibility:

Cadcorp SIS Map Modeller
Cadcorp SIS Map Editor
Cadcorp SIS Map Manager
Cadcorp SIS Map Express
Cadcorp SIS ActiveX Modeller
Cadcorp SIS ActiveX Manager
Cadcorp SIS ActiveX Viewer
Cadcorp GeognoSIS

See full list of Dataset Formats

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