2013-11-SFScon-Bolzano_OGC_OSGeo
FreeGIS.net, INSPIRE, Open Source Software and OGC
standards
Workshop: How Open Source / Free Software and Open Standards
complement each other in an SDI environment
SFScon 13 Free Software Conference
Bolzano, ITALY 15. November 2013
Dipl.-Geogr. Athina Trakas
Open Geospatial Consortium (OGC)
Director European [email protected]
http://www.opengeospatial.org
Arnulf Christl
metaspatial
[email protected]://www.metaspatial.net
Who is Athina ?
http://www.opengeospatial.org/ogc/organization/staff/atrakas
Athina works in the field of GIS since 1998 after finishing
university with a diploma in Geography.
She worked with CCGIS and WhereGroup being responsible for
Business Development and International Outreach for Free and Open
Source GIS and standards.
Since 2009 she is OGC's Director for European Services. Athina is
contact person for OGC in Europe, responsible for the Consortiums
OGC activities and networking, like planning and managing of OGC
recruitment, connecting with European stakeholder organisations and
members.
Athina is charter member of OSGeo since 2008.
Additionally she is charter member of the Open Source Geospatial
Foundation (OSGeo) since 2008.
Introducing Arnulf Christl
Arnulf Christl is an Open Source, Open Standards and Open Data
advocate and promotes innovation at a sustainable
pace.MetaspatialSystems Architect
Founder of themetaspatial Institute
Co-founder and Emeritus President ofOSGeo
OGCArchitecture Board Member
OpenStreetMapAdvocate
The workshop is about ...
open standards
open source GIS software
your questions
Introduction
The OGC
http://www.opengeospatial.org/
http://www.opengeospatial.org/ogc/programs
How is an OGC standard developed?
http://www.opengeospatial.org/ogc/process
Issue / problem
How is an OGC standard developed?
http://www.opengeospatial.org/ogc/process
Issue / problem
How is an OGC standard developed?
http://www.opengeospatial.org/ogc/process
Issue / problem
Tell the relevant working group Send email to the TC-mailing
list
Talk to OGC members and/or staff
Communicate!
How is an OGC standard developed?
http://www.opengeospatial.org/ogc/process
Positive Feedback / Interest
Start a Domain Working Group (DWG): Special
pre-requirements
needed (a certain number of
OGC members, email to the
Technical Committee etc.)
Results: charter, mailing list,
Wiki, timeframe (e.g. for
teleconferences, meetings,
expected results etc.)
Initiate an Interoperability Program initiative: Special
pre-requirements
needed
Results: e.g. an Engineering
Report
With enough interest /
support by OGC members,
a working group can be
established
How is an OGC standard developed?
http://www.opengeospatial.org/ogc/process
Results achieved in the DWG/SWG may be: A Discussion Paper or a
Candidate Standard document is being
developed
It will be reviewed by the OGC Architecture Board (OAB) and
the
Technical Committee (TC).
Once an OGC document is published (by vote of the SWG), everyone
who is interested can comment on it within a given period of time
(usually 30 days): Requests to the document need to be answered by
the relevant SWG
Changes and comments need to be included (SWG works the
comments)
SWG votes to release to the TC for an adoption vote, vote
happens New approved standard published
OGC Domain & Standards Working Groups
Standards Program (SP):
(i) Domain Working Groups: Forum for discussion and documentation
of interoperability requirements for a given information or user
community,
Informal presentations and discussions about the market use of
adopted
OGC Standards
(http://www.opengeospatial.org/projects/groups/wg)
(ii) Standards Working Groups: Edit and approve a candidate
standard
for public comment, Consider official Change Request Proposals to
an
existing OGC Standard and make changes to the standard as necessary
(http://www.opengeospatial.org/projects/groups/swg)
OGC Standards in INSPIRE
OGC MetOceans DWG: example for cooperation (Cross Domain
Modeling)
Slides from presentation given
by Jeremy Tandy at the Toulouse OGC TC Meeting (Sept. 2010)
The OGC MetOcean DWG provides the forum for development of a
harmonized data model for meteorology.Main stakeholders in this
activity comprise:
WMO, INSPIRE (TWG Atmospheric Conditions & Meteorologica
Features), aviation and earth science community.
INSPIRE technical architectureINSPIRE Discovery service:OGC
Catalogue Service for the Web (CSW)
Query language: OGC Filter Encoding
INSPIRE View service:ISO 19128 : WMS (Web Map Service) 1.3
(extensions)
INSPIRE Download service:Pre-defined data sets => standard
Internet protocols (like FTP)
Direct access data with queries
Web Feature Service:OGC WFS / ISO 19142
Filter Encoding: OGC Filter Encoding / ISO 19143
INSPIRE Coordinate Transformation service:An Application Profile
of the Web Processing service (WPS) based on the Web Coordinate
Transformation Service (WCTS)
INSPIRE and OGC Standards Market Report on open Standards in
INPSIRE provide examples activities underway around INSPIRE based
on international standards, highlight overlap between OGC and ISO
standards (e.g. ISO 19115)This purpose of this special OGC market
report is to provide INSPIRE stakeholders with an overview of OGC,
CEN and ISO standards in INSPIRE and to provide clarification of
the Implementing Rules with respect to standards. The report
highlights the fact that INSPIRE has some elements that are legally
binding and other elements that are not. INSPIRE Implementing Rules
are legally binding, but they do not specify particular standards
or technologies. Technical Guidance documents accompanying the
Implementing Rulesprovide the implementation details but theyare
not legally binding documents. Technical Guidance documents
reference OGC, ISO and other standards.
http://www.opengeospatial.org/pressroom/marketreport/inspire
OGC and INSPIREWe encourage members and the public to make
suggestions for improving OGC standards, or for developing
alternatives to better fit users application requirements,
including to support INSPIRE.
Please note: existence of INSPIREs due date does not by itself
speed up processing feature requests and change requests within
OGC. It is up to the submitter to champion the requests or find
proxies to champion the changes!
If you dont shepherd your request, who will?
And if someone else does, are you sure they are looking out for
your interests?
OGC & the FreeGIS.net multilingualFreeGIS.net enables public
administrations to effectively publish geo information by providing
Free Software applications, open data licenses and open
standards
https://freegis.net/
Technical Example
Technical Example
This technical example will show how the OGC standard needs to
be extended in order to address the requirements of the INSPIRE
regulation. OGC standard
INSPIRE View Service requirements
MapServer technical implementation
FreeGIS environment and collaborative approach:PostGIS
MapServer
GisClient
FreeGIS.net Viewer
PyWPS
OpenLayers
The OGC WMS Standard
The OGC WMS Standard is used to disseminate map data. TO acces a
service first the Online Resource URL must be made available. This
URL is the parameterized with one of the two core
calls:GetCapabilities
GetMap
They will return a map image for a specified coordinate area and
selected map layers.
There are also some optional additional calls to retrieve a
legend (GetLegendGraphic) or the metadata of the layer or the full
service...
http://www.opengeospatial.org/standards/wms
OGC WMS Capabilities Document
GetCapabilities
...will return an XML document containing all the information
need to make an educated GetMap request.
Example:
http://metaspatial.net/cgi-bin/ogc-wms.xml?REQUEST=GetCapabilities&...
OGC WMS GetMap Request
GetMap
...will return an map image
Example:
http://metaspatial.net/cgi-bin/ogc-wms.xml?REQUEST=GetMap&...
http://metaspatial.net/cgi-bin/ogc-wms.xml?VERSION=1.3.0&REQUEST=GetMap&SERVICE=WMS&LAYERS=DTM,Overview,Raster_250K,Topography,nationalparks,Infrastructure,Places&STYLES=,,,,,,&CRS=EPSG:27700&BBOX=424735.97883597884,96026.98412698413,467064.02116402116,127773.01587301587&WIDTH=400&HEIGHT=300&FORMAT=image/png&BGCOLOR=0xffffff&TRANSPARENT=TRUE&EXCEPTIONS=XML
Changes to OGC WMS...
Sometimes new requirements will arise, for example to satisfy
INSPIRE regulations. As a quick fix these can be implemented in
Open Source software. In the long run they should become part of
the regular OGC WMS standard by requesting a change from the OGC
working group.
OGC Change Request
Submitting a Change Request to the OGC
All technical development underlies a lot of changes. Standards
rely heavily on dependencies. Instead of reinventing the wheel
again and again, standards reference other standards. Therefore any
change in a standard is bound to disrupt other development,
especially in the underlying layers. Still, sometimes there is a
need for changes, to make these known they have to be submitted as
a Change Request. This section will highlight the steps
involved.
https://docs.google.com/document/d/1o2IjqNsnzWiTX_ECnnIMK52tQO3GQN2hXM8rllGXa9A/edit#
The CEN/TC287 workshop on best practice for National Spatial
Data Infrastructures (NSDIs) convened in Saint-Denis, Paris, France
on 1 March 2010. This provided an excellent venue and opportunity
for organizational representatives of CEN/TC287, ISO/TC211 and OGC
to discuss ways in which coordination between these standards
bodies can be improved to better address European and international
standards requirements.
Discussions also included representatives from participating user
communities, and led to general agreement for closer, more formal
cooperation between OGC and CEN/TC287, as well as agreement to
consider continued improvements in OGC and ISO/TC211 coordination.
Emphasis was also placed on the testing of standards for viability,
fulfillment of purpose, ease of implementation and improvements in
interoperability. The mantra "test early, test often" was
reflective of this need.These three organizations will be
cooperatively exploring the adoption of a common Change Request /
Requirements registry, and will be examining ways in which adopted
standards schema can be managed more effectively and efficiently
across these organizations. The requirements process is also an
effort to make the standards process more transparent and more
responsive to community needs. All requirements and change requests
will be gathered in an open forum visible to the public. All
parties agreed that continued exploration of process improvements
would be valuable to the community,with particular focus on
improved coordination, reduction in duplication of effort, and
streamlining of standards coordination processes.
Collaboration and Cooperation
http://www.opengeospatial.org/pressroom/newsletters/201004/#C5
The Role of Open Source software for OGC Standards
development
Best practices
Prototype development
Reference Implementations
Free & Open Source Software and Standards
How does an Open Source Project Work?
How can you participate actively in an Open Source project?
What does "Empowerment of the user" mean?
How are Open Source Projects funded?
Participation, Collaboration and Funding
OSGeo Incubation
The Open Source Geospatial Foundation has setup a rigorous
quality assessment. Any project wishing to become endorsed by OSGeo
has to go through this process and prove that it follows the best
practices laid out by OSGeo. This quality assurance ensures that
projects are managed and run in a sustainable way and that users
can rely on it's longevity.
Find more information on the Web at:
http://www.osgeo.org/incubator
OSGeo Incubation
FreeGIS.net
FreeGIS.net enables public administrations to effectively
publish geo information by providing Free Software applications,
open data licenses and open standards
https://freegis.net/
Thank you for your attention!Grazie!
Vielen Dank!
Athina TrakasDirector European Service, OGCeMail:
[email protected]
web: http://www.opengeospatial.org
Arnulf ChristlMetaspatial
[email protected]
http://www.metaspatial.net
Grazie, spasiba and Thank you very much for your attention.
2013 Open Geospatial Consortium
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