gi2010 symposium-stark (tele-addr)
DESCRIPTION
10. Sächsisches GIS-Forum Dresden: 13./14.05.2010TRANSCRIPT
14.05.2010 10. Sächsisches GIS-Forum 1
10. SÄCHSISCHES GIS-FORUM-DRESDEN
An OpenGeodata Project:OpenAddresses
Prof. Hans-Jörg Stark
This presentation has been transmitted remotely as TELE lecture This presentation has been transmitted remotely as TELE lecture from Unifrom Uni--MUTTENZ (CH) using „BizBizMUTTENZ (CH) using „BizBiz--Tool“ via University of RIGA (LV)Tool“ via University of RIGA (LV)
14.05.2010 10. Sächsisches GIS-Forum 2
Georeferenced Street Addresses
(At least) One address per building containingstreetname, housenumber, postcode, placename
Important for micro-geospatial analysisAvailability – yes, of course!Accessibility – well, sort of…Alternatives: Interpolatednavigation-data
14.05.2010 10. Sächsisches GIS-Forum 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
14.05.2010 10. Sächsisches GIS-Forum 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)
14.05.2010 10. Sächsisches GIS-Forum 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
14.05.2010 10. Sächsisches GIS-Forum 6
OpenAddresses.org …
…is an OpenSource portal for geocoded addressesglobally
… stores only address-information – no personal information
… is compliant with OpenStreetMap
… offers services for geocoding and reverse-geocoding
… offers download service for OA data
14.05.2010 10. Sächsisches GIS-Forum 7
Areas of Interest
SchweizWashington (USA)Villach (AUT)Morges / Lausanne (SUI)
14.05.2010 10. Sächsisches GIS-Forum 8
OpenAddresses offersfurther…
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
14.05.2010 10. Sächsisches GIS-Forum 9
What‘s going on in OpenAddresses?
Currently: 11‘012‘244 geocoded addresses
235 website-visitors per day
14.05.2010 10. Sächsisches GIS-Forum 10
Research around OpenAddresses
Quality assessment ISO/TC 211 based:
Using OWMS for attribute and positionalaccuracy
