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The OGC and OpenGIS Development

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A student who is interested in the proximity of new public schools to closed ... The WMT demonstrated two uses of Web mapping: ... – PowerPoint PPT presentation

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Title: The OGC and OpenGIS Development


1
The OGC and OpenGIS Development
2
What is OpenGIS?
  • OpenGIS is defined as transparent access to mixed
    geodata and geoprocessing resources in a
    networked environment.

3
The Importance of OpenGIS for the development of
WebGIS
  • Interoperability established by OpenGIS standards
    will enable web users to combine data from many
    locations by eliminating obstacles created by
    platform differences.

4
Sample application
  • A student who is interested in the proximity of
    new public schools to closed landfills can easily
    create a map on his browser by connecting to just
    the data he needs. The student does not know that
    the data is coming from two different state
    agencies (TNRCC and TEA), or that the data is
    kept in two different GIS platform types. With
    the creation of true OpenGIS interfaces the
    student can create a map that was never even
    imagined by the suppliers of the data.

5
The OpenGIS Consortium
The OGC was created in order to develop the means
by which the next level of GIS interoperability
can be realized. The OGC is made up of developers
and users of geographic information resources
including vendors, system integrators, academia,
government agencies, and standards organizations.
6
Goal of the OGC
  • The goal of the OpenGIS Project is to provide a
    comprehensive suite of shared interface
    specifications. These specifications will enable
    developers to write the software components that
    will provide true interoperability.

7
Completed Implementation Specifications
  • The OpenGIS Simple Features Specification
    currently open to public at http//www.opengis.org
  • The OpenGIS Grid Coverage Specification
    (Available to the public late 2000)
  • The OpenGIS Catalog Services Specification
    (Available to the public late 2000)

8
Future OGC Specifications
  • Feature Identity Relationships
  • Geometry
  • Ordinary Coverages
  • Presentation- The OpenGIS Mapping
    Specifications GetMap, GetCapabilities, and
    GetFeatureInfo
  • In the normal Technical Committee process, these
    are created first as abstract specifications
    and than as an implementation specifications.

9
OGCs recent breakthrough Web Mapping Testbed 1
  • The WMT demonstrated two uses of Web mapping
  • Thin Client- A user easily and rapidly
    searched, retrieved, compiled geospatial
    information from multiple locations on the WWW
    with only a web browser.
  • GIS Client- A disaster management agency used
    the interoperable web-based geodata to feed
    pre-made functions on a agency GIS which created
    data that would otherwise take to long acquire
    and process.

10
Future DIR Research Topics
  • Open Source GIS platforms (GRASS, EPPL7)
  • Freely distributed Web mapping software
    (UMN Mapserver, Jshape)
  • Emerging and existing Metadata Standards
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