OpenStreetMap for GIS Pros - Local Authority Edition

A shorter version of my 'OpenStreetMap for GIS Pros' workshop for the Irish Local Authority GIS Manager's meeting, March 2014.

Transcript

1. An Introduction to
   OpenStreetMap for
   GIS Professionals
   richard.cantwell@gamma.ie
   Local Authority GIS Managers
   Meeting – March 2014
   

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2. Rule 1: Respect Copyright
   

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3. opendatacommons.org/licenses/odbl/summary/
   

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4. opendatacommons.org/licenses/odbl/summary/
   

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5. Vs
   creativecommons.org
   

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6. Map contains data Copyright NavTeq
   

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7. Map contains data Copyright NavTeq
   

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8. Map contains data Copyright NavTeq
   

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9. © Stan Openshaw
   

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11. How OSM represents data in GIS Terms:
    Nodes / Ways / Relations
    Key / Value pairs
    TagInfo
    

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12. Geographic Information is represented as:
    Nodes
    Point
    Ways
    Line Closed Line Area (Polygon)
    eg. Roundabouts
    Relations
    Multi (Point / Line / Polygon)
    eg. Bus Routes / Inner Rings
    

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13. Tagging: Key / Value Pairs
    

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14. Tagging: Key / Value Pairs
    

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15. Motorway
    National Primary
    National Secondary
    Regional
    Local Primary
    Access
    Tagging: International Standards / Local Implementations
    

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16. Tagging: Key / Value Pairs
    

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17. Tagging: Oversight, not moderation
    

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18. Tagging: Oversight, not moderation
    

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19. Consuming: Tiles, Files and API’s:
    The OSM ‘Stack’
    Tiles – your own and/or others
    Files – Downloads, Databases
    API’s – OverPass Turbo
    

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20. Edit Store Render Consume
    Store Analyse
    

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21. Tiles
    

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22. wiki.openstreetmap.org/wiki/Tile_usage_policy
    OSM Tile Usage Policy
    

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23. maps.stamen.com/watercolor
    

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24. www.mapbox.com/blog/interactive-woodcut-map
    

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25. www.thunderforest.com
    

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26. MapInfo - .xml and .TAB files
    

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27. Why make your own?
    Tile Usage Policy
    You’re in control: Design and Content
    Need tiles in EPSG:27700? 29903?
    Having OSM Data in a Database enables a lot of things
    You will learn a lot
    

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28. www.switch2osm.org
    

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29. Files
    

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30. Entire Planet downloadable (~500GB uncompressed)
    planet.openstreetmap.org
    

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31. Processed data downloads & services
    www.geofabrik.de
    

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32. download.geofabrik.de
    Including pre-configured Shapefiles (reduced featureset)
    

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37. API's
    

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43. Extract Raw Data – Embedded in a map on a web page
    map.addLayers([
    make_layer("http://overpass-api.de/api/interpreter?data=
    node[amenity=pub](bbox);out+skel;
    (way[amenity=pub](bbox);node(w););out+skel;", “Blue")
    ]);
    

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44. Extract Raw Data – Embedded in a map on a web page
    map.addLayers([
    make_layer("http://overpass-
    api.de/api/interpreter?data=node[amenity=pub](bbox);out+skel;", "blue"),
    ]);
    

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45. What can you do for OSM?
    Talk to the community.
    Provide ( free) data if possible:
    • Road classifications.
    • Speed limits.
    • etc
    

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46. Next OSM Meetup: Dublin, Sat 8th March: www.tog.ie
    

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47. Some 'Takeaways‘
    License Check obligations if mixing data
    Data Model Area / Multipolygon handling is complex
    Usage Policies Desktop prob not an issue. Server, web different
    Build Your Own No apt-get install tileserver Yet
    Shapefiles Easy, not complete
    Postgis Starting point for many possibilities
    Data APIs Great for snapshots in geojson or POI webpages
    Data vs Services Is OSM commoditising data? Is that bad?
    

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48. This slide deck is available at:
    speakerdeck.com/manaboutcouch
    Thank you.
    Any Questions?
    Richard Cantwell
    @ManAboutCouch
    richard.cantwell@gamma.ie
    

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