te::gml Namespace Reference

This is the namespace for the GML module. More...


class  Envelope
 Envelope defines an extent using a pair of positions defining opposite corners in arbitrary dimensions. More...
class  Module
 This singleton defines the TerraLib GML module entry. More...

Detailed Description

This is the namespace for the GML module.

The OpenGIS Geography Markup Language Encoding Standard (GML is an XML grammar for expressing geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic transactions on the Internet.
As with most XML based grammars, there are two parts to the grammar the schema that describes the document and the instance document that contains the actual data.
A GML document is described using a GML Schema. This allows users and developers to describe generic geographic data sets that contain points, lines and polygons. However, the developers of GML envision communities working to define community-specific application schemas [en.wikipedia.org/wiki/GML_Application_Schemas] that are specialized extensions of GML. Using application schemas, users can refer to roads, highways, and bridges instead of points, lines and polygons. If everyone in a community agrees to use the same schemas they can exchange data easily and be sure that a road is still a road when they view it.
Clients and servers with interfaces that implement the OpenGIS Web Feature Service Interface Standard [http://www.opengeospatial.org/standards/wfs] read and write GML data. GML is also an ISO standard (ISO 19136:2007) [www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=32554 ].
Most of the documentation used in GML classes were extracted from the specificaton available at: http://www.opengeospatial.org/standards/gml.

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