Datacatching by means of WFS

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Data-catching by means of WFS

• Project on sketch stage

Marianne Vik Dysterud Adviser Statistics
Norway Oterveien N-2225 Kongsvinger Tel 47 /
628 85 311 Fax 47 / 628 85 030 E-mail
MVD_at_SSB.NO
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The main objects

• Reduce the burden of data-reporting in the
  municipalities
• Increase the quality of the data

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Relevant data

• Geo-referenced data that municipalities are
  obliged to report to Statistics Norway once a
  year
• Examples
• length of footpaths and bikeways established
  within urban agglomerations last year
• different kinds of green areas
• sewerage systems, pipes, .., length, age, types
  of material, ..
• ---

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Todays problems

• Un-standardized
• data storage
• data format
• Some municipalities dont have GIS
• The municipalities officers in charge understand
  the questions different
• ex. within/outside urban agglomerations
• Impossible to know the quality of data

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The ideal world of data-catching

• Standard formats
• Open systems, platform independency
• WFS Web Feature Service (or Server)
• The Web Feature Server (WFS) is an interface
  allowing requests for geographical features
  across the web being highly interoperable. It
  uses the XML-based GML for data exchange
• The basic Web Feature Service allows querying and
  retrieval of features (http)

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National Mapping Authority
The Directorate of Public Roads
WFS
Query
WFS
Retrieval GML
SSB geo-DB ArcSDE
Manual work
Automated routines for querying and retrieval
of data in SSB
ssb.no online schema
WFS
WFS
WFS
WFS
WFS
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(n 1), m, ..
n
q, r, ..
x
y
M u n i c i p a l i t i e s
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Work plan - 2006

• Establish a simple WFS for points in The National
  Mapping Authority
• Contact one or two vendors of GIS for
  implementing WFS
• Create receiving routines for transforming GML to
  ArcSDE