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State of the Map 2008
London Mapping Marathon
Shaun McDonald
London Low Zoom
London Mid Zoom
London High Zoom
London High Zoom
Problems
Map looks complete at low zoom However at high zoom:
Roads are unnamed Junctions with incorrect layout Roads under trees are missing Footpath/Cyclepaths are missing POIs are missing
Solution
Lots of Mapping Evenings Every Wednesday Evening Put your name against your bit of the cake on the
wiki page Meetup in a pub after some mapping on the way
there Special rendering to highlight unnamed roads by
Dave Stubbs http://dev.openstreetmap.org/~random/nonames/
Map 20080430
Map 20080507
Map 20080514
Map 20080521
Map 20080528
Map 20080604
Map 20080611
Map 20080618
Map 20080625
Map 20080702
Map 20080430
Case Study – Isle of Dogs 20080618
Before only Yahoo tracing, main roads and National Cycle Network Route 1
Now complete, depending on your definition of complete
Length of main roads stayed the same Length of unclassified 11.02 10.08 10.43→ →
51226% increase in steps, footway, pedestrian, service and residential
Length of Roads Isle of Dogs
18 June 200825 June 2008
02 July 2008
0
10
20
30
40
50
60
pedestriancyclewayservicefootwayunclassifiedresidential
Case Study Table
Highway TypeDate 18/06/08 25/06/08 02/07/08% increase increaseresidential 16.64 19.39 19.91 19.65% 3.27unclassified 11.02 10.08 10.43 5.35% 0.59
8.24 16.62 17.44 111.65% 9.2primary 8.23 8.23 8.23 0.00% 0tertiary 3.9 3.9 3.95 1.28% 0.05service 3.31 5.33 5.02 51.66% 1.71trunk 2.03 2.03 2.03 0.00% 0secondary 1.87 1.87 1.87 0.00% 0cycleway 1.25 1.24 1.24 0.80% 0.01pedestrian 0.71 2.32 2.32 226.76% 1.61primary_link 0.39 0.39 0.39 0.00% 0steps 0.04 0.08 0.08 100.00% 0.04Total 57.63 71.48 72.91 26.51% 15.28
Length of Roads in Kms
footway
Mapping Party Results
Typically 7 mappers at the pub Regular meetup for local mappers 3 hard core mappers have now been to a
mapping party More pubs and other POIs Central London with less unnamed streets
At the Pub
Your City?
Need active OSM community, as few newbies Need good transport connections Find some pubs in/near the area to be mapped Setup a wiki page like:
http://wiki.openstreetmap.org/index.php/London/Summer_2008_Mapping_Party_Marathon
Create a cake on the wiki page Fortnightly or Monthly is a better frequency
Your City?
And Hope there isn't any rain
