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Published byOscar Segroves Modified over 10 years ago
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Arnold Bregt SDI from a technological perspective: Metadata
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1 Components People Technology Policies Standards Spatial Data
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Experiment Centrum voor Geo-informatie
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Stsul.dat 0020 1015 5035 10045 75030...
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Depth to the pyritic layer 4
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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 9
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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 11
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Centrum voor Geo-informatie Standards for Meta-data
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Metadata Standards But the leading one is ISO 19115 13
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INSPIRE 14
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Metadata INSPIRE 15
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Metadata Standards Profiles 16
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Metadata implemantation Profiles from ISO 19115 Implementation schema in XML (ISO 19139) Software support (e.g. Geocat in Bennekom) 19
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Latest version ISO 19115-1: 2014 20
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Evolution of standards 21
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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 24
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Example - Tove Jani Reminder Don't forget me this weekend! 25
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XML presentation 26
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XML is everywhere! Word documents Meta data (geonetwork) Meta data Basis for GML, KML, CityGML, etcGMLKML 27
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