Where are the US Mappers at?
Contributor & Data Development
in U.S. Urbanized Areas
Dennis Zielstra and Pascal Neis
State ...
Background
Data Preparation
Retrieve OSM full
history dump file
Clip and process
data
Combine data with
socioeconomic
information
Selected Urban Areas
Development/Contributions
Nodes/Area in km2
Current Situation
Nodes/Area in km2
Development/Contributions
Ways/Area in km2
Current Situation
Ways/Area in km2
Development/Contributions
Relations/Area in km2
Socio Economic Factors
Pearson’s R Spearman's R
Contributors and
Contributions 0.24 (weak) 0.48 (strong)
Contributors and
...
Community Development
Contributors per urban area
Community Distribution
• How to determine home region of a mapper?
1. First or latest created Node of contributor
2. Delau...
Community Distribution
Curious? Try: hdyc.neis-one.org
US OSM Community Development &
Distribution
Issue of External Contributions
Some areas depend heavily on external contributions!
External Contributions in the US
Strong contributors (>= 1000 Nodes)
External Contributions in the US
Medium to low contributors (< 1000 Nodes)
Thanks!
Twitter:
@den_uf
@pascal_n
Email:
dzielstra@ufl.edu
pascal@neis-one.org
Weekly OSM Summary at:
https://blog.openst...
References
• Mooney, P.; Corcoran, P. Characteristics of Heavily Edited Objects in
OpenStreetMap. Future Internet 2012, 4,...
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Where Are the US Mappers At? Contributor and Data Development in US Urbanized Areas

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  • Locations converted to Geojson and visualized in Mapbox
  • Suddenly some other cities show upNo relations before 2008
  • Where Are the US Mappers At? Contributor and Data Development in US Urbanized Areas

    1. 1. Where are the US Mappers at? Contributor & Data Development in U.S. Urbanized Areas Dennis Zielstra and Pascal Neis State of the Map US 2014 – Washington D.C. April 12 & 13, 2014
    2. 2. Background
    3. 3. Data Preparation Retrieve OSM full history dump file Clip and process data Combine data with socioeconomic information
    4. 4. Selected Urban Areas
    5. 5. Development/Contributions Nodes/Area in km2
    6. 6. Current Situation Nodes/Area in km2
    7. 7. Development/Contributions Ways/Area in km2
    8. 8. Current Situation Ways/Area in km2
    9. 9. Development/Contributions Relations/Area in km2
    10. 10. Socio Economic Factors Pearson’s R Spearman's R Contributors and Contributions 0.24 (weak) 0.48 (strong) Contributors and Population Density 0.46 (strong) 0.45 (strong) Contributors and Per Capita Income (PCI) 0.64 (strong) 0.43 (strong) Contributors and Education (BA or higher) 0.42 (strong) 0.31 (moderate)
    11. 11. Community Development Contributors per urban area
    12. 12. Community Distribution • How to determine home region of a mapper? 1. First or latest created Node of contributor 2. Delaunay triangulation of all Nodes created by contributor 3. Delaunay triangulation of all contributor changeset centroids 4. Spatial statistics e.g. K-means clustering method http://en.wikipedia.org/wiki/K-means_clusteringhttp://en.wikipedia.org/wiki/Delaunay_triangulation
    13. 13. Community Distribution Curious? Try: hdyc.neis-one.org
    14. 14. US OSM Community Development & Distribution
    15. 15. Issue of External Contributions Some areas depend heavily on external contributions!
    16. 16. External Contributions in the US Strong contributors (>= 1000 Nodes)
    17. 17. External Contributions in the US Medium to low contributors (< 1000 Nodes)
    18. 18. Thanks! Twitter: @den_uf @pascal_n Email: dzielstra@ufl.edu pascal@neis-one.org Weekly OSM Summary at: https://blog.openstreetmap.org
    19. 19. References • Mooney, P.; Corcoran, P. Characteristics of Heavily Edited Objects in OpenStreetMap. Future Internet 2012, 4, 285-305. • Neis, P.; Zielstra, D.; Zipf, A. The Street Network Evolution of Crowdsourced Maps: OpenStreetMap in Germany 2007–2011. Future Internet 2012, 4, 1-21. • Neis, P.; Zielstra, D.; Zipf, A. Comparison of Volunteered Geographic Information Data Contributions and Community Development for Selected World Regions. Future Internet 2013, 5, 282-300. • Neis, P.; Zielstra, D. Recent Developments and Future Trends in Volunteered Geographic Information Research: The Case of OpenStreetMap. Future Internet 2014, 6, 76-106.

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