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JerryJerry CloughClough
SK53 on OpenStreetMap
@SK53onOSM
SK53.osm@gmail.com
Maps Matter Blog :
www.sk53-osm.blogspot.com
OHM Strapline CandidatesOHM Strapline Candidates
–A map of everything that has
ever existed
–Putting a time-slider on the ...
OpenHistoricalMapOpenHistoricalMap
● Newish project, kicked-off SF
April 2013
● Based on OpenStreetMap
technology ('the st...
OSM Historical Starting Point
OSM Nottingham : Example 1
Dead Pubs
OSM Nottingham : Example 2
Listed Buildings &
Old Maps
http://osm-nottingham.org.uk/?z=16&lon=-1.15010&lat=52.95162&bgl=Sa...
Open Historical MapOpen Historical Map
NowNow
Step 1 : Georectify Old Map(s)
http://mapwarper.net
Step 2 : Create vector map in editor
Step 3 : Render the data
DerbyDerby
RoadRoad
DerbyDerby
RoadRoad
DerbyDerby
RoadRoad
No. Start location End location Start Date End Date
1 Priory
Roundabout
Adams' Hill 1800 9999
2 Adams ...
NYPL Building InspectorNYPL Building Inspector
http://leatherwood.herokuapp.com/footprint
OHM Current & FutureOHM Current & Future
DevelopmentsDevelopments
Summary : OHMSummary : OHM
NowNow
● Ready for sets of 'snapshot'
data
● Temporal data (tags) manual
process
● Routing
● Li...
Time SliderTime Slider
● Unifying element for:
– Search
– Editing data
– Viewing data
● Across OHM / Wikimedia
● Prototype...
More ToolsMore Tools
● Building Inspector
– Ports currently in
progress (with NLS)
● Integration of
MapWarper in editor
● ...
Tangible ChallengesTangible Challenges
● Data volumes
● Creating maps (rendering)
● Editing & fixing data
● Imprecise temp...
Data VolumesData Volumes
● Potential combinatorial explosion of data elements
– Exploration using OSM data suggests not ma...
●
Classifying ChangeClassifying Change
RenderingRendering
http://www.openhistoricalmap.org/#map=14/40.7766/-119.2265&layers=H
● Current Approach
– Static Renderi...
More informationMore information
PresentationsPresentations
– SotM Baltics 2013
Susanna Anas, Wikimedia Finland
– SotM Bir...
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OpenHistoricMap: overview

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Overview of OHM.

Slides created for OpenDataCamp and re-used for SotM-FR, Brest 2015.

Published in: Education
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OpenHistoricMap: overview

  1. 1. JerryJerry CloughClough SK53 on OpenStreetMap @SK53onOSM SK53.osm@gmail.com Maps Matter Blog : www.sk53-osm.blogspot.com
  2. 2. OHM Strapline CandidatesOHM Strapline Candidates –A map of everything that has ever existed –Putting a time-slider on the World –The World's most out of date map
  3. 3. OpenHistoricalMapOpenHistoricalMap ● Newish project, kicked-off SF April 2013 ● Based on OpenStreetMap technology ('the stack') ● No formal ontology or rules – Elements & Time described by free-form tagging – No validation ● Mainly repository of vector map data ● Open data (OdbL/CC-BY-SA) ● Close links with – Wikimedia Commons (Wikimaps) – GLAM (Galeries, Libraries, Archives & Museums) Wiki – Wikidata – OpenStreetMap – Open Knowledge Foundation ● Participants – GIS specialists (e.g., Topomancy LLP) – Academics (mainly CS) – Wikimedians – OpenStreetMappers ● Infrastructure hosted by Topomancy URL: www.openhistoricalmap.org
  4. 4. OSM Historical Starting Point
  5. 5. OSM Nottingham : Example 1 Dead Pubs
  6. 6. OSM Nottingham : Example 2 Listed Buildings & Old Maps http://osm-nottingham.org.uk/?z=16&lon=-1.15010&lat=52.95162&bgl=Salmon,1,11&l=listedbuildings&lh=GradeII
  7. 7. Open Historical MapOpen Historical Map NowNow
  8. 8. Step 1 : Georectify Old Map(s) http://mapwarper.net
  9. 9. Step 2 : Create vector map in editor
  10. 10. Step 3 : Render the data
  11. 11. DerbyDerby RoadRoad
  12. 12. DerbyDerby RoadRoad
  13. 13. DerbyDerby RoadRoad No. Start location End location Start Date End Date 1 Priory Roundabout Adams' Hill 1800 9999 2 Adams Hill Lenton Lodge 1800 1825 3 Adams Hill Lenton Lodge 1825 9999 4 Lenton Lodge W of Rose and Crown 1800 9999 5 W of Rose and Crown E of Rose and Crown 1800 1936 6 W of Rose and Crown E of Rose and Crown 1936 9999 7 Three Wheatsheaves Faraday Road 1800 1910 8 Three Wheatsheaves Faraday Road 1910 9999 9 Faraday Road Tollhouse Hill 1800 9999
  14. 14. NYPL Building InspectorNYPL Building Inspector http://leatherwood.herokuapp.com/footprint
  15. 15. OHM Current & FutureOHM Current & Future DevelopmentsDevelopments
  16. 16. Summary : OHMSummary : OHM NowNow ● Ready for sets of 'snapshot' data ● Temporal data (tags) manual process ● Routing ● Limited automated rendering – Existing tools (TileMill) fine for specific needs To comeTo come ● More & better examples – Pre 1800 too ● Integrating temporal tools into website & editor – Time-sliders – Map Warper ● Additional QA tools ● In browser rendering
  17. 17. Time SliderTime Slider ● Unifying element for: – Search – Editing data – Viewing data ● Across OHM / Wikimedia ● Prototype work – Summer 2014 GsoC student ● Date & Period based ● Range or 'Snapshot'
  18. 18. More ToolsMore Tools ● Building Inspector – Ports currently in progress (with NLS) ● Integration of MapWarper in editor ● Additional semi- automated data capture ● Map Roulette ● QA tools – Many exist in OSM – Identify problems to fix ● Overlapping temporalities ● Temporal Geocoder
  19. 19. Tangible ChallengesTangible Challenges ● Data volumes ● Creating maps (rendering) ● Editing & fixing data ● Imprecise temporality ● Calendars – implicit proleptic Gregorian ● Buildings – 3D (some existing OSM work) – Phased construction http://demo.f4map.com/#lat=41.8909282&lon=12.4906339&zoom=17
  20. 20. Data VolumesData Volumes ● Potential combinatorial explosion of data elements – Exploration using OSM data suggests not major problem – Some mitigation routes possible ● Link to wikidata to need for multiple elements – Name changes – Historical population ● Urban areas much smaller in past ● Change mainly localised
  21. 21. ● Classifying ChangeClassifying Change
  22. 22. RenderingRendering http://www.openhistoricalmap.org/#map=14/40.7766/-119.2265&layers=H ● Current Approach – Static Rendering – Requires new tiles for each time period ● Future Approach – In browser rendering ● Vector Tiles ● MapCSS
  23. 23. More informationMore information PresentationsPresentations – SotM Baltics 2013 Susanna Anas, Wikimedia Finland – SotM Birmingham 2013 David Evans, U. of Derby – SotM Karlsruhe 2014 Tim Waters, Topomancy Blogs etcBlogs etc. ● Wikimaps Wikimedia Zurich May 2014 Susanna Anas ● Maps Matter Tartu workshop August 2013 Jerry Clough Mailing ListMailing List ● https://lists.openstreetmap.org/pipermail/historic/ Monthly Google HangoutsMonthly Google Hangouts ● Via Susanna ÅnäsVia Susanna Ånäs

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