Why was OGDI created? Multiple geospatial data formats Important data integration / conversion cost (65% - 85 % of the GIS implementation cost) Various projections Need for accessing data from a CD-ROM Need for accessing data from the Internet Reusable code for many applications

What does OGDI do? Direct and transparent access to local and networked geospatial datastores Multiple and simultaneous access to heterogeneous datastores Extraction of geometry and attributes Transparent and on-the-fly transformation of –Projections –Coordinates systems –Hardware representation Runs under Win32 (Windows 95/NT) and Unix

Open Geospatial Datastore Interface T. Fisher

Who maintains OGDI? Intergraph ESRI Canada Global Geomatics CubeWerx CIRI NRCan National Defence GTIS SpatialWare Socomar Infomar IDON Corp Health Canada Navitrak Engineering and others The Information Interoperability Institute members include: (not exclusive)

What implementations exist and what has made them successful: CubeSTOR from CubeWERX OGDI Servers and adapters from Global Geomatics Java OGDI from Global Geomatics JViews from ILOG SpatialFX from ObjectFX

Lockheed Martin - Radar Simulation DND Research Establishment - various prototypes GEOMedia from Intergraph (Vector Formats) ARCView from ESRI (Raster formats) MARINET Project Multi-dimension OGDI

New or near Future Developments ARCView Vector formats ESRI Map Objects OLE-OGDI Integration of Remote Database Access based on SQL/MM Meta-data services

How does OGDI relate to OGC, TC211 OGC- Submitted to Simple Feature Access Internet Thread –Thread stopped –OGDI moved to WWW working group ISO - Submitted as a reference platform –ISO still in process of deciding what services are

How extensible is OGDI to additional data formats Approximately 25 drivers available commercially –GRASS, DXF, DGN, DOQ, PAMAP, ARCInfo, SHAPE, MID/MIF, MrSID, CubeSTOR, etc... Public Domain or Gov’t owned drivers –ADRG, CADRG, CIB, VRF/VPF, DTED, GRID, CEOS, NTDB/CCOGIF 3.0

How extensible is OGDI to other DCP’s (distributed computing platforms) The OGDI is written in ANSI C and in SUN JAVA making it very portable Can be wrapped into a CORBA or OLE environment Can also be adapted to map connect to a CORBA or OLE source as a driver

Applications ISO/TC211 Feature API OGC SQL OGC CORBA OGC OLE/DB Access, Query and Update - in compliance with the General Feature Model Simple Feature Data Access, OGC-RFP-1 ISO OGC Table, rows Records ISO/TC211 WI 19 Services

Applications ISO/TC211 Feature API OGC SQL OGC CORBA OGC OLE/DB ISO OGC OGDI API OGDI integration into ISO