WALIS Forum 2008 by fjzhangweiqun

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									    WALIS Forum 2008



OPEN Standards
OPEN Source
OPEN Data                Tim Bowden
                         Open Source
                    Spatial Consultant
                 www.mapforge.com.au
 Open Standards: Overview

Benefits of Open Standards
−   Who wins, who loses
Enterprise Open Source
−   What is it & what does it mean
Open Data
−   Opportunities
−   benefits
−   costs
−   risks
        What is a Standard?

De Facto & De Jure Standards
Closed Standards (Proprietary)‫‏‬
Semi-open standards
−   Most common form of standards
Open Standards
−   No significant barriers to implementation
−   Equal availability to all players
Systemic Economic Impact of
         Standards
Standards create ”Natural
Monopolies”
−   Telecoms network, email
    (smtp), www (http)‫‏‬
Network effect
−   Added value to existing
    network nodes with each
    additional node, above the
    value of the node itself; ie,
    Network externality value
    effect.
 Economic Impact: Closed v
     Open Standards
Proprietary standards vendors can
internalise network externalities
Open standards eliminate or reduce
ability to internalise network
externalities
−   All participants can leverage network
    externalities
Practical Benefits of Open
        Standards
                  Interoperability
                  Reduced cost
                   −   Development
                   −   Deployment
                   −   lifecycle
                       management
                  Vendor
                  competition
                  Shared return
                  on investment
      What is Open Source?
Four facets:
−   Philosophy
−   Development model
−   Business model
−   Community
Examples
−   Linux, Firefox, PHP, Ruby, Python etc...
−   Perl: Duct tape of the internet
−   Apache: powers over 50% of all web sites
   License Misconceptions
By convention open source means OSI
approved license
Most popular: GPL- Enforced freedom for
derivatives
BSD- Anything goes
Open Data: Worldwide trends

Accelerating trend towards open data
−   US geospatial data is public domain
−   Canada: Most Fed, Territorial & Prov. spatial data is
    now available free
−   Japan: Moving towards free availability of spatial
    data
−   South Africa: All national gov't digital data available
    free
−   UK: Significant pressure to open access to OS data
−   WA: SLIP opening access to spatial data
−   QLD: CC licensing of gov't data
        Open Data Licenses
Move towards CC data licensing
−   Attribution
−   Noncommercial
−   No Derivative Works
−   Share Alike
Australia using a combination of licenses
QLD gov't examining the use of CC licenses
to answer data licensing needs
     Open Source Geospatial
          Foundation



OSGeo: Umbrella organisation representing
leading open source spatial applications
−   14 applications, with more in incubation
−   Mapserver, Mapguide, Geoserver, gdal/ogr etc
Industry advocacy and Education
Open Standards
Close relationship with OGC
              Open Source Stack
Component            Proprietary              Open Source
Metadata Catalogue   CubeWerx WRS             GeoNetwork
Dedicated Viewer     ArcReader                gvSig, qGIS, Udig
Cartography          ArcMap/ArcGIS            GRASS, OSSIM
Analysis             ArcINFO/ArcGRID          GRASS, OSSIM
Handheld             ArcPad                   gvSig (coming)‫‏‬
Web Viewer           ArcIMS                   Openlayers, Mapbuilder,
                                                     Mapbender,
                                                   Mapguide OS
WMS, WFS             ArcIMS                   Mapserver, Geoserver,
                                                Mapguide OS
Spatial Database     Oracle Spatial, ArcSDE   PostGIS
        OSGeo Projects codebase

                       Lines of Code   Person Years   Contributors Contributors
                                                       Last Year    Project Life
Web Mapping                  901,322            231              63           106
Geospatial Libraries       2,444,219            670              62            95
Desktop Applications       1,198,039            322              43            73
Misc                         184,488             46               6              6
Total                      4,728,068          1,269             174           280

								
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