arnold bregt sdi from a technological perspective: metadata
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Arnold Bregt
SDI from a technological perspective: Metadata
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Components
PeoplePeople
Technology
Policies
Standards
Spatial Data
Spatial Data
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Experiment
Centrum voor Geo-informatie
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Centrum voor Geo-informatie
Stsul.dat
0 0 201 0 155 0 3510 0 4575 0 30. . .. . .
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Depth to the pyritic layer
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Centrum voor Geo-informatie
Why describe spatial datasets?
Manage (storage and change) Search (content global ) Exchange (format ) Use (content details, quality)
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Centrum voor Geo-informatie
Target groups
Personal (storage)
Own organisation (storage and content)
Other organisations (content, format, quality, contact person)
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Centrum voor Geo-informatie
Extent description
Target groups Functions
Manage Search Exchange Useuse
Personal + + - -
Own organisation ++ ++ ++ ++
Other organisation - +++ +++ +++
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Centrum voor Geo-informatie
How to describe ?
Personal standard Organisational standard (inter)national standards
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Exercise Draft your own Metadata Standard
Draft your own Metadata Standard
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Centrum voor Geo-informatie
International standards
America (FGDC) Europe (CEN) ISO (ISO19115)
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Metadata Standards
There are many
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Centrum voor Geo-informatie
Standards for Meta-data
0102030
405060
CEN
FGDC
ANZLIC
Natio
nal
Oth
ers (
Inho
use)
ISO
-pro
jects
%
2000 April
2000 Dec.
2001 Dec.
2002 Dec.
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Metadata Standards
But the leading one is ISO 19115
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INSPIRE
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Metadata INSPIRE
Metadata INSPIRE
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Metadata Standards
Profiles
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Metadata implemantation
Profiles from ISO 19115
Implementation schema in XML (ISO 19139)
Software support (e.g. Geocat in Bennekom)
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Latest version
ISO 19115-1: 2014
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Evolution of standards
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Centrum voor Geo-informatie
Conclusions
Describing spatial datasets with meta-data is essential to keep the data accessible in the future.
For (inter) national exchange the use of a standard is a must.
A problem with describing metadata is that the personal requirements are less than the organisational requirements.
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Thank you for your attention!
Questions
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XML
XML = Extensible Markup Language
Standard of W3C
Both machine and human readable
Store data and exchange over the internet
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Example
<?xml version="1.0" encoding="UTF-8"?> - <note> <to>Tove</to> <from>Jani</from> <heading>Reminder</heading> <body>Don't forget me this weekend!</body> </note>
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XML presentation
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XML is everywhere!
Word documents
Meta data (geonetwork)
Basis for GML, KML, CityGML , etc
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