Validating and updating OpenStreetMap schools with open data

 

Andrew Harvey

1. Identify Data

2. Licensing Check

3. Develop & Document a Plan

1. Consult community
    
2. Mapping to OSM schema
    
3. Import plan

Schema Mapping

amenity=school

name

contact:phone

contact:fax

contact:email

website

addr:city

addr:postcode

start_date

school:service:native_language_support=yes

school:service:distance_education=yes

school:enrolment

school:gender=male/female/mixed

isced:level=0/1/2-3

grades=

school:specialty

school:selective=yes/no/partial

fee=no

operator=NSW Department of Education

coordinates

4. Compare & Conflate

496 features missing in OSM

1713 other features with new or different tags

can't compare the other way due to private & public schools being mixed together

5. Do the import

Lessons

• Agencies with open data portals are usually very happy for you to use their data
   
• In this case source data was very high quality (but it's not always the case, so always need to use caution)
   
• Diversity issues in OSM revealed. eg. hospital schools, schools for children with disabilities were underrepresented in OSM
   
• Need better software to aid in future imports and to be an ongoing process rather than a once off

Lessons

• OSM data was very good too, most differences were due to multiple names in use, eg.
  
  Foobar Primary School
  Foobar Public School

if we still have time

OpenAddresses
 

• Global collection of free and open address points data

• Consistent schema

• Automatic updates

17 sources across AU/NZ

513M addresses globally from 2,381 sources

In AU, it could eventually provide a competitor to GNAF with daily updates instead of quarterly

Future

 

Cadastre, Buildings, Roads, etc.