10. Sächsisches GIS-Forum Dresden: 13./14.05.2010

1. 10. SÄCHSISCHES GIS-FORUM-
DRESDEN
An OpenGeodata Project:
OpenAddresses
Prof. Hans-Jörg Stark
hansjoerg.stark@openaddresses.org
This presentation has been transmitted remotely as TELE lecture
from Uni-MUTTENZ (CH) using „BizBiz-Tool“ via University of RIGA (LV)
14.05.2010 10. Sächsisches GIS-Forum 1

2. Georeferenced Street Addresses
(At least) One address per building containing
streetname, housenumber, postcode, placename
Important for micro-geospatial analysis
Availability – yes, of course!
Accessibility – well, sort of…
Alternatives: Interpolated
navigation-data
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3. OpenWebMapServices
(OWMS) Geocoders
Not too bad – but not too good either:
Geocoding 90'483 addresses (Canton Solothurn):
– Google Maps:
• 79'785 addresses (88.5%) at streetlevel
• 69'131 (76.7%) < 20m distance to official data
– Microsoft Bing Maps:
• 77'392 addresses (85.8%) at streetlevel
• 36'770 (40.8%) < 20m distance to official data
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4. OpenAddresses.org – The
Project
Idea:
− Take advantage of individual‘s local expertise and
collect this knowledge via Internet
− collected data is freely available & accessible
Implementation (since 2010):
− MapFish (GUI)
− PostgreSQL/PostGIS (Database)
− Python (Server), JavaScript (Client)
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5. OpenAddresses.org – History
Jul '07: Idea: collect addresses via GM API
Aug '07: First version www.openaddresses.ch
Jul '08: www.openaddresses.at online
Dec '08: Start 'Map Your World'
…
Mar '10: OpenAddresses.org live
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6. OpenAddresses.org …
…is an OpenSource portal for geocoded addresses
globally
… stores only address-information – no personal
information
… is compliant with OpenStreetMap
… offers services for geocoding and reverse-geocoding
… offers download service for OA data
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7. Ar
e
Morges / Lausanne(USA)
Washington (AUT)
Villach (SUI)
Schweiz
a
s
of
In
te
r
e
st
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8. OpenAddresses offers
further…
Project-Wiki: http://code.google.com/p/openaddresses
Discussion: http://groups.google.com/group/OpenAddresses
Registration of Orthophoto WMS
Upload of existing geocoded address-dataset
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9. What‘s going on in
OpenAddresses?
Currently: 11‘012‘244 geocoded addresses
235 website-visitors per day
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10. Research around
OpenAddresses
Quality assessment ISO/TC 211 based:
Using OWMS for attribute and positional
accuracy
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11. visit and join
www.openaddresses.org
hansjoerg.stark@openaddresses.org
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