Gml file definition

The gml:mimeType property points to a definition of the file mime type. The gml:fileStructure property is defined by a codelist. Note further that all values shall be enclosed in a single file. Multi-file structures for values are not supported in GML. The semantics of the range set is described as above using the gml:rangeParameters property. To do so, you must include the optional xs:import line specified in the GML schema fragment for FeatureSchema.

The sample feature implements a table definition for the Buildings feature in the Open GIS Consortium document r1. This table definition is expressed in an XML format on page 14 of the document and is reproduced as follows:. Start with the GML that is already written and add the skeleton for an FDO Feature Class, which includes the skeleton for a class definition with identity properties. You can make the following changes:. For more information on the srsName attribute, see Coordinate Reference System below.

The elements whose coordinates are interpreted with respect to such a CRS include the following:. An srsName attribute attached to a geometry object specifies the object's CRS, as shown in the following example:. It refers to a definition of the Coordinate Reference System that is used to interpret the coordinates in the geometry.

The CRS definition may be in a document i. Note that LineString objects, along with LinearRing objects, assume linear interpolation between the specified points. The following GML example illustrates the distinction between features and geometry objects. The Building feature has several geometry objects , sharing one of them the Point with identifier p21 with the SurveyMonument feature:.

Note that the reference is to the shared Point and not to the SurveyMonument , since any feature object can have more than one geometry object property. The rest of the geography is defined by the photo-collection schema. Geography Markup Language From wiki.

Jump to: navigation , search. Geography Markup Language A vector map, with points, polylines and polygons. Filename extension. Hidden category: Wiki. Navigation menu Personal tools Create account Log in.

Namespaces Page Discussion. Views Read View source View history. Need Help Contact us About Wiki. GIS Online help. In other languages. Add Links. This page was last modified on 29 November , at This page has been accessed 24, times. A vector map, with points, polylines and polygons.

Open Geospatial Consortium. Geographic Information System. This article's external links may not follow wiki.