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Geography Markup Language
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===Initial work – to OGC recommendation paper=== Ron Lake started work on GML in the fall of 1998, following earlier work on [[XML]] encodings for radio broadcasting. Lake presented his early ideas to an [[Open Geospatial Consortium|OGC]] meeting in Atlanta, Georgia, in February 1999, under the title xGML. This introduced the idea of a GeoDOM, and the notion of Geographic Styling Language (GSL) based on [[Extensible Stylesheet Language|XSL]]. Akifumi Nakai of NTT Data also presented at the same meeting on work partly underway at NTT Data on an XML encoding called G-XML, which was targeted at location–based services.<ref>{{ cite web|url=http://www.dpc.jipdec.or.jp/gxml/contents-e/history.htm|title=G-XML|url-status=dead|archive-url=https://web.archive.org/web/20091217094736/http://www.dpc.jipdec.or.jp/gxml/contents-e/history.htm|archive-date=2009-12-17}}</ref> In April 1999, Galdos created the XBed team (with CubeWerx, [[Oracle Corporation]], [[MapInfo Corporation]], NTT Data, [[Mitsubishi]], and Compusult as subcontractors). Xbed was focused on the use of XML for geospatial. This led to the creation of SFXML (Simple Features XML) with input from Galdos, US Census, and NTT Data. Galdos demonstrated an early map style engine pulling data from an Oracle-based "GML" data server (precursor of the WFS) at the first OGC Web Map Test Bed in September 1999. In October 1999, Galdos Systems rewrote the SFXML draft document into a Request for Comment, and changed the name of the language to GML (Geography Markup Language). This document introduced several key ideas that became the foundation of GML, including the 1) Object-Property-Value rule, 2) Remote properties (via rdf:resource), and 3) the decision to use application schemas rather than a set of static schemas. The paper also proposed that the language be based on the [[Resource Description Framework]] (RDF) rather than on the DTDs used to that point. These issues, including the use of RDF, were hotly debated within the OGC community during 1999 and 2000, with the result that the final GML Recommendation Paper contained three GML profiles – two based on [[Document Type Definition|DTD]], and one on RDF – with one of the DTD's using a static schema approach. This passed as a Recommendation Paper at the OGC in May 2000.<ref>{{Cite web|url=http://portal.opengeospatial.org/files/?artifact_id=13252|title=GML in JPEG 2000 for Geographic Imagery (GMLJP2) Encoding Specification}}</ref>
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