Presentation on OpenStreetMap to Nottingham University HackSoc

1. Hacking with
OpenStreetMap and
other Open Map Data
Jerry Clough, (aka SK53)
OSM Contributor
Maps Matter: http://sk53-osm.blogspot.com/

2. Outline
●
Intro to OpenStreetMap
–
Mapping
–
Humanitarian Uses
–
Example, Haiti Earthquake 2010
–
Challenges
●
A simple (geo)Open Data hack
●
Addresses & POI Matching
–
Critical to improving OSM data everywhere
–
Improve efficiency during Humanitarian crises
●
OSM Tool Hacks
●
Fun Hacks

3. OpenStreeMap
in Haiti, January 2010
Case Study of Mapping for Humanitarian
Purposes
A personal experience

4. Call for action

First message at 05:28, 13 Jan 2010
from Mikel Maron.
You have likely heard about the massive quake that has hit Haiti
OpenStreetMap can contribute map data to help the response ..
http://wiki.openstreetmap.org/wiki/WikiProject_Haiti#2010_Earthq
uake_Response
Thanks
Mikel

–

My first edit at 17:17 13 Jan 2010
http://www.openstreetmap.org/browse/changeset/3611391

5. Initial edits around Port-au-Prince


Adequate aerial imagery ex. Yahoo
Existing major roads imported ex. Haiti
mapping service
–
–

Part of earlier initiative for Hurricane Gustav
Mostly experienced OSM contributors
Some names from DMA topo maps

7. GeoEye imagery

14th January (Christoph Schmidt, telascience)

Damage assessment

Infill mapping

Resolve ambiguity

9. Displaced People Camps


Example of development of ad hoc tagging
Camp site already rendered on main OSM
render (mapnik)
–
–

Tile refresh in order of minutes
IDP could be shown quickly
tourism=campsite, refugee=yes
–
Don't get too involved with conventional meaning of
tags

10. Damage assessment
• Buildings
–
building=collapsed
–
building=yes
earthquake:damage=collapsed
• Roads
–
impassable=yes
–
barrier=*

11. Geofabrik Downloads

Standard service for community
–
–
Many extracts for most of Europe
–
Larger area extracts outwith Europe
–

Daily frequency
North America not then covered
A specific Haiti extract added
–
–
Special landing page
–

5 minute refresh frequency
Later extended to cover whole island of Hispaniola
OSM extracts SHP files Garmin IMG files

13. Bridges

NEMA asked if we had bridge information
(14:00 Jan 14)

Checked they had geofabrik shapefiles (16:50 )

Asked Geofabrik if they could add bridges

Mapped 60+ bridges

Bridges added to shape files

Confirmatory message to NEMA (20:52)

17. Garmin download
●
Multiple Garmin downloads
(mainly created using mkgmap)
●
Geofabrik
●
All-in-One map
●
●
Multiple overlays & base map
Contours from SRTM data
(cpgsmapper /GroundTruth)
●
NC distribution not integrated with OSM Maps
●
Separate transparent overlay layer

18. DMA Gazetteer 1994

19. Street Names

Names were available from
1994 DMA map





266
2010-01-27
224
121
80
2010-01-30
Ushahidi & SAR
2010-01-26
2010-01-29
About 1200 in total
387
2010-01-28
Not as psychologically
rewarding to map
569
2010-01-25
Slow workflow
No. Unchecked/unmapped
2010-01-24
Awkward to find
Date
72

Critical information
2010-01-31
35

Rectified DMA maps
2010-02-01
57

Gap reports
2010-02-02
38

Click through listings
2010-02-03
22
Nominatim
on wiki,

20. Maps for Dogs
●
Nottingham Open Streetlight data contains
streetnames and location

21. Maps for Dogs
●
Nottingham Open Streetlight data contains
streetnames and location

22. Addresses : the real challenge
●
Food Hygiene Data
–
400k premises
–
Whole UK
–
15% of all postcodes
–
–
Bars, schools,
hospitals, restaurants
Geolocated (only to
postcode)
●
Land Registry Prices
Paid
–
18 million house
prices since 1995
–
England and Wales
only
–
Address data only

25. Matching Data

26. Deriving
Information from
Land Registry
Data

27. OSMLY