Report from WG9
ISO/TC211 Plenary Meeting
Stockholm, Sweden
2005-06-09
WG9 Information Management
5 Work Items
• WI 6709 Standard representation of geographic
point location by coordinates
• WI 19127 Geodetic codes and parameters
• WI 19131 Data product specification
• WI 19135 Procedures for registration of
geographical information items
• WI 19138 Data quality measures
• Convenor: Hiroshi Imai
• WG9 Meetings
– 1st Bangkok (2002-05),
2nd Gyeongju (2002-11),
3rd Thun (2003-05),
4th Berlin (2003-10),
5th Kuala Lumpur (2004-05), 6th Pallanza (2004-10)
– 7th Stockholm, 2005-06-07, 16:00-17:00
WI 19135 Procedures for registration
of geographical information items
• Project Leader: Charles Roswell
• Current Status:
– DIS vote ended in 2004-12 (N1753)
• P-Members: 24 Yes out of 24
– Text for IS was sent to ISO
in 2005-04 (N1788)
WI 19131 Data product specification
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Project Leader: João de Matos
Editor: Robert Walker
Editing Committee Meetings: three times…
Current Status:
– Text for DIS was sent to ISO in 2005-04
(N1786)
– ISO/DIS 19131 has been distributed by ISO,
target date: 2005-10-27
WI 19127 Geodetic codes and parameters
• Project Leader: Julie Binder Maitra
• Current Status:
– Text for TS was sent to ISO, N1752, 2004-12
– To be published as ISO TS 19127
• Call for Registration Authority
– N 1752: Request for candidates for registration
authority (RA) of ISO/TS 19127
– Two responses
• NB of Germany/BKG, N1774
• EPSG, N1775, N1805
both not fully satisfying the requirements…
– Current view, on registry, of ISO CS
• Registry is a standard, then it is not allowed to
put it on the publically open Web
– to be discussed at Agenda Item 9.4
WI19138 Data Quality Measures
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Project Leader: Gerhard Joos
Editor: Erik Stenborg
Target: Technical Specification, TS
Current status:
– Vote for DTS (N 1744)
– Result of Voting, N1769
•16 Yes
•2 No (UK, US)
•2 Abstain
•2 Not Voted
• Editing Committee Meeting, 2005-06-06/08,
Stockholm
WI 6709 Standard representation of
geographic point location by coordinates
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Project Leader: Kevin Kirby
Editor: Larry Hothem
Target: IS (revision of ISO 6709:1983)
Project Team Meetings (Preparatory Work)
Berlin 2003, Kuala Lumpur 2004, Pallanza 2004
• Current Documents: NWI/CD, N1773
• Result of voting, N1821
– NWI: 19 Yes
– CD: 14 Yes, 3 No (Denmark, Japan, Korea)
• Editing Committee Meeting, 2005-06-06/08,
Stockholm
Need for a standardized format for description of
coordinate representation (1/3)
Current Status:
Currently, there exists a variety of data formats and
profiles used to represent (or encode) geographic
information. These formats can take various forms
of character string or binary data, such as in
• ISO 6709:1983
• GML and other XML flavour
• Compact text encoding of
latitude/longitude
coordinates (Microsoft)
• SHAPE (ESRI)
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DGN
VPF
DXF
MID/MIF
E00
DLG, and so on...
The representation of geographic location by
coordinates consists of an embedded component of
these data formats. Each format represents
geographic point locations by coordinates differently.
These formats constitute the syntactic and
schematic representation of geographic locations.
Need for a standardized format for description of
coordinate representation (2/3)
Requirements for interoperability:
• Applications and systems use different representations
of geographic point locations for their exchange. This
implies a transformation of such representation for
interoperability, which needs to know in which format a
geographic location is encoded (or represented) and/or
in which format it must be encoded to perform the
transformation.
• For this purpose, the encoding format must be
described and documented
– either within the geographic location representation
– or within a format registry.
• To enhance the interoperability of geographic location
by coordinates, it is highly suitable to have access to
standardized format registers which provide the
description of the encoding. Similarly to coordinate
reference systems (CRS), such registers will facilitate
the reuse of geographic location representation
descriptions.
Need for a standardized format for description of
coordinate representation (3/3)
• Format (registry) of coordinate representations
• The standardization of a format registry will define
the components of such a format and its structure.
Among others, it should include the following items:
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Unique identifier
Name
Version
Data elements and their types
Structure of the data (type of separator, …)
Compression mechanism
Current 6709 CD Proceed as planned
Trying to be
backward compatible
to ISO 6709:1983
Or proceed in another way…
6709 DIS
ISO 6709:1983 & XML
With multiple representations
6709 2nd CD
NWIP 6709-2
NWIP with a new number
WG9 Request/Recommendation
• Discussions at this plenary will be
appreciated
• WG9 continues to consider this issue
• There may be a resolution on this
issue at Stockholm/Montreal Plenary
WG9 Future Issues
• At this stage there is no active Work
Item inside WG9 in Stockholm
– may become dormant…
• Possible New Work Item Proposal
– NWI related to 6709
•coordinate representation