Outcome of the CGDI Workshop on Data
Integration and Tools
Held in Sherbrooke
November 4th and 5th,
1998
During the very succesfull two
days workshop, the participants reached a concensus on the following issues:
- The "Framework: Integration
and Tools" Vision
"In todays Geospatial projects
which involve data from a multitude of sources the work required to bring
all the data together into one system and to integrate the data so that
it can be used for in depth analysis accounts for up to 80% of the overall
project’s effort. We envision that by the year 2012 this effort will account
for less than 1%"
"All the efforts dedicated
in Canada towards a sound Data Framework should be based on existing
standards and practices that are relevant to our work. Funding should
be allocated accordingly. These standards and practices are (but not
limited to):"
- The work of the ISO TC-211
http://www.statkart.no/isotc211/
(items in Bold are viewed as particularly relevant for this group)
- Part 1: Reference model
- Part 2: Overview
- Part 3: Conceptual schema
language
- Part 4: Terminology
- Part 5: Conformance and
testing
- Part 6: Profiles
- Part 7: Spatial subschema
and Spatial Operators
- Part 8: Temporal subschema
- Part 9: Rules for application
schema
- Part 10: Cataloguing
- Part 11: Geodetic reference
systems
- Part 12: Indirect reference
systems
- Part 13: Quality
- Part 14: Quality evaluation
procedures
- Part 15: Metadata
- Part 16: Positioning services
- Part 17: Portrayal of geographic
information
- Part 18: Encoding
- Part 19: Services
- Functional standards
- Imagery and gridded data
- The work of the OpenGIS
Consortium (OGC) http://www.opengis.org/
- Feature Geometry (Topic
1)
- Spatial Reference Systems
(Topic 2)
- Locational Geometry (Topic
3)
- Stored Functions and Interpolation
(Topic 4)
- Features and Feature Collections
(Topic 5)
- The Coverage Type (Topic
6)
- Earth Imagery (Topic 7)
- Relations Between Features
(Topic 8)
- Quality (Topic 9)
- Transfer Technology (Topic
10)
- Metadata (Topic 11)
- The OpenGIS Service Architecture
(Topic 12)
- Catalogs (Topic 13)
- Semantics and Information
Communities (Topic 14)
- ISO/TC-204 Transport
information and control systems http://www.iso.ch/meme/TC204.html
- The services we envision
Both the ISO and the OGC
as well as the CEOnet are proposing a service architecture for the deployment
of technology. The following are high level services that need to be detailed
but are seen as the complete set of tools for total data integration.
- Align Vertical (This is the
Data Alignment Layer (http://www.ctis.nrcan.gc.ca/~cdal/main-e.html)
- Access
- By NTS Number
- Centroid with Radius
- Using different projection
system, Datum, Scale
- Define best points
- By sending a cluster of
points
- Visualization
- NTS Maplet
- Satellite image chip
- Insertion in User’s Data
set
- Alignment
- Document Technologies
- Document Issues
- Point Picker (based in Ids)
- Optimizing approach
- Maintenance
- Projection conversion
- Frequently used points
- Align Horizontal
- Match Semantic
- Align Scale
- Conflate
- Translate Format
- Evaluate Quality
- Establish Link (permanent)
- The eras of GeoSpatial Data
Integration
Throughout the evolution
of the CGDI Framework, activities will mature through different stage
of maturity; vision, consultative Process, Engineering, Technology, Use.
The following describes the
time line for the Use. A more complete time line for all stage of maturity
will be compiled.
- -0.1 (Yesterday)
- Version 1.0 (Now until - 2002)
- Format – Interface
- Transformation
- Format
- Datum
- Projection
- Coding Scheme
- Understanding
- Version 2.0 (2002 – 2005)
- Basic Semantic Integration
- Basic Conflation
- Vertical and Horizontal
Integration
- Basic Scale transformation/Realignment
- Basic Core Data Interoperability
- CDAL version 2.0 of Specifications
- Version 3.0 (2005 – 2008)
- Complete Definition and
Understanding of National Framework with partial implementation
- Version 4.0 (2008 – 2012)
- Substantial Interoperability
- Version 5.0 (2012)
- Full Data Integration (The
Vision is Reality)
- An Action List
- Write FAQ for CDAL -P.Schut
- 5 pages on CDAL for the Web
Site -C.Parent
- Better description on the
CGDI Web Site for the Framework Data concepts and Tools -S.Latour, T.Evangelatos
- Explain to Canadians the Terminology
and the standards -All
- Create a section on Standards
for the Web Site -V.Hume
- Document uses and methods
for CDAL -P.Jolicoeur, P.Paul
- Create a section on partnership
for the Web Site that would contain information about Development Opportunities
and Funding -S.Mackie, T.Evangelatos
- Varia
- A policy statement
- The member of this workshop
do not support the endorsement of any software (public or commercial).
Participants: