OpenStreetMap Presentation to Fairfax Advocates for Better Bicycling: How OSM can help bicycling and...
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Transcript of OpenStreetMap Presentation to Fairfax Advocates for Better Bicycling: How OSM can help bicycling and...
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OpenStreetMap:Bicycling and SRTS
Josh Doe <[email protected]>
Given to Fairfax Advocates for Better Bicycling August 17, 2011
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Outline
• What is OpenStreetMap (OSM)? • What can be done with OSM• OSM data model• How to map• Safe Routes to School (SRTS) Mapping Toolkit
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What is OpenStreetMap?
• Community driven project to map the world• Anyone can contribute, like Wikipedia
oHistory is kept: vandalism can be undone• Collaboratively determined mapping
conventions • Data is freely available for anyone to use
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What can be done with OSM data?
• Online maps• Mobile apps• Routing/navigation• Analysis
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OpenStreetMap.org
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Open.MapQuest.com
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Paper Maps
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Routing
© 2011 CloudMade - Map data CCBYSA 2011 OpenStreetMap.org contributors
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Analysis
Sidewalks and roads maintained by my subdivision
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Elevation Profile Web Service
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Ride the City.com• Uses own database of trails for routing, OSM for map• Planning switch to OSM for routing
o Test server setup for Baltimore-Washington metro area
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OpenTripPlanner.com
• Multi-modal trip planner (walking, biking, transit)
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Humanitarian Relief
• Dedicated Humanitarian OpenStreetMap teamo Humanitarian Response & Economic Development
• Haiti, Sendai, Libya, and many others• Used by Fairfax County Urban Search & Rescue Team (VA-
TF1) during Haiti response
CC BY-NC-SA 2.0 Erica 'junipermarie' http://flic.kr/p/7f9a9y Courtesy VA-TF1 member
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OSM Data Model
• Three feature types:o Nodes (points, vertices)o Ways (edges, lines)o Relations
• Areas as closed ways, or multipolygons with relations • Tags (attributes) open ended
o Key-value system, string basedo e.g. name=Patrick Henry Library,amenity=library
• Topologicalo Ways connect with common node
• Features have unique internal id + version number
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On-the-ground Surveying
Photo CC-BY-SA Gordon Joly http://flic.kr/p/4KPZ8B
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Walking Papers.org
• Print, survey & annotate, scan, edit
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Aerial Imagery
VBMP 2007 (6-inch)
• Microsoft Bing imagery (global), federal/state/local imagery
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Potlatch2 - online editor
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JOSM - Java editor
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• MapDust - error reportingo Embed on any website
• JOSM validatoro Checks before uploading
• OSM Watch Listo Reports of changes in an area
• KeepRighto Automatic error detection
• Many other specialized tools
Quality Assurance
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Safe Routes to School
• US federal program to:o Promote walking and biking to schoolo Provide funding for improvement of infrastructure
• Maps are a critical component of SRTS application• No standard method to produce maps
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Safe Routes to SchoolMapping Toolkit
• Just a concept! • Automatic creation of maps for SRTS applications
o No GIS skills neededo Near-professional quality, standardized maps
• OSM-basedo Community can map infrastructureo Benefits other data users (routing, printed maps, etc.)o Toolkit can be used across the country
• Map typeso Current and planned infrastructureo Walkability analysis (distance maps)
% improvement in access
http://wiki.openstreetmap.org/wiki/Safe_Routes_to_School_Mapping_Toolkit
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Walkability Example
• Terra Centre Elementary School o New sidewalk being builto Already mapped trails and sidewalks o Determine walkability before and after construction
• Assumptions:o 1 mile walking distance (show 1/4 mile increments)o Unsafe to walk along secondary roads and aboveo Unsafe to cross secondary and above without crossing
• Could add more criteriao Elevation, curb cuts (wheelchair accessibility)
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Walkability before new sidewalk
Attendance boundary in green
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Walkability after new sidewalk
Attendance boundary in green
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Notes
• This presentation is licensed CC-BY-SA• Some slides CC-BY-SA Harry Wood http://goo.gl/iHYN9
• Some links: • http://www.openstreetmap.org• http://www.open.mapquest.com• http://open.mapquest.com/ • http://wiki.openstreetmap.org/wiki/Safe_Routes_to_School_Mapping_Toolkit • "OpenStreetMap: Data Model,
Crowdsourcing, and Technology", http://www.applied-geoinformatics.org/index.php/agse/agse2010/paper/view/181/115