Transcript Metadata

‘Geo-ID - The Geospatial Information Directory’
Developing a pilot meta database for
Irish digital spatial data.
Rybaczuk, K., Prendergast, W. P. and Ovington, M.
Presented by Matthew Ovington
FUNDED by TCD/DIT and IRLOGI
Metadata is
“Information
about
Information”
Spatial metadata is the information that
describes spatial datasets.
Spatial data producers
in Ireland include...
NMA
Central Government
Local Government
Private Sector
Research Institutes
Except….EPA
NGOs
OSI via MEGRIN
GSI via GEIXS
Development of the Geo-ID
› EVALUATE STANDARDS
What constitutes a standard?
› a set of detailed guidelines used as
a means of establishing uniformity
› ‘top down’ or ‘bottom up’
› some semantic divergence...
Evaluate Services & Standards
› International meta data standards

–

–
Comité Europeen des Normes (CEN TC287)
Federal Geospatial Data Committee (FGDC)
Australia and New Zealand Land Information Council (ANZLIC)
InternatioIal Standards Organisation (ISO TC211)
› National meta data services
SNIG (Portugal), GEODAN (Netherlands), AFIGEO (France), SINES (UK), Geodata
(Denmark), Spatial Info Directory (Belguim), ATKIS (Germany) FGDC Geospatial Data
Clearing House (USA), AUSLIG (Australia), NGDF (UK)
› International meta data services
MEGRIN, (Euro topographic) GEIXS (Euro Geological data) RCADE, (Euro statistics)
ESMI (European Spatial Metadata Infrastructure) EWSE (Euro earth observation data)
…..
Development of the Geo-ID
› EVALUATE STANDARDS
› DEVELOP TEMPLATE & DATABASE
Develop Guidelines, Database
and Questionnaire
› Most Info vs. Best Info
› User requirements?
› Standard alignment?
=DATABASE +
QUESTIONNAIRE
HIGH
HIGH
HIGH
HIGH
HIGH
MID
MID
MID
MID
MID
LOW
LOW
LOW
LOW
LOW
Spatial Extent
Positional Accuracy
Data Format
Validation
Updatedness
Title
Price Information
Lineage
Thematic Accuracy
Contact Details
System Type
Copyright
Abstract
Temporal Extent
Distribution Media
GIS Ireland 98 Questionnaire
The Geo-ID Holds information on...
› Data Identification
› Data Extent
› Data Distribution
› Data Quality
› Data Administration
› Metadata Information
Core Geo-ID Elements
DATASET
IDENTIFICATION
EXTENT
DISTRIBUTION
Theme
Planar Extent
Storage f ormat
Supply f ormat
Supply media
Price inf ormation
Title
Abstract
Browse Graphic
Geographic
Extent
Unit of
distribution
Copy right
Restrictions
Temporal Extent
Vertical Extent
ADMINISTRATIVE
QUALITY
Organisation
Name
Abbrev . Name
Address
Phone
Fax
Email
URL
Lineage
OPA
OAA
OTA
OLC
M&U
Progress
Point of Contact
Name
Abbrev . Name
Address
Phone
Fax
Email
URL
METADATA
Entry Date
Last Update
Maps to CEN
draft ISO perhaps
Questionnaire
› IDENTIFY
› What is the title of these data?
› How best would you describe these data?
› COVERAGE
› DISTRIBUTION
› Is there, at present, a price structure?
› Who retains the copyright of these data?
› QUALITY
›
What is the maintenance and update frequency of
the data set?
Development of the Geo-ID
› EVALUATE STANDARDS
› DEVELOP TEMPLATE & DATABASE
› PILOT & POPULATE
Pilot and Populate
Development of the Geo-ID
›
›
›
›
EVALUATE STANDARDS
DEVELOP TEMPLATE & DATABASE
PILOT & POPULATION
DISSEMINATION
Dissemination Method
A FUNCTION OF…
› target audience
› technology available to
audience
› technology available to
publish
› resources & expertise
available
› data complexity
=INTERNET
Paper
8%
Internet
54%
CD-ROM
38%
Source: GIS Ireland 98
Development of the Geo-ID
›
›
›
›
›
EVALUATE STANDARDS
DEVELOP TEMPLATE & DATABASE
PILOT & POPULATION
DISSEMINATION
MAINTENANCE & DEVELOPMENT
Maintenance
›
›
›
›
Ensure validity of metadata
Carrot or Stick?
Proactive / Voluntary.
3 Models - Postal
- Electronic Mail
- Dynamic On-line
Future Development?
› Component of future Irish NSDI
› Co-ordination with ESMI
› Alignment with future ISO
standard…so long as CEN maps to ISO