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An OpenStreetMaps & INSPIRE databases story. a technical experience with transport network. Introduction of the story. Spanish INSPIRE TN database Sources: Cadastre (streets), Statistical Office (street names), National Mapping Agency (roads).
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An OpenStreetMaps & INSPIRE databases story a technical experience with transport network
Introduction of the story • Spanish INSPIRE TN database • Sources: Cadastre (streets), Statistical Office (street names), National Mapping Agency (roads). • Auxiliary sources: Regional and Local Mapping Agencies. • Features: • INSPIRE oriented (with some extensions) • WMS & WFS implemented base on this database • 3D • Network topology • PostgreSQL • We have invested a lot of human and economic resources.
But we have to face a problem • The complex updating processes: • Many organizations with competences in TN. • Distributed task. • No software tools available for a very complex data model.
What if we use OpenStreetMaps? • They have an open software environment for editing and updating geometries. • It’s a very success and well known project (easy to sell the idea). • It’s very well supported project -including the EEA :( -.
And even more… • It could be a key source of VGI. • It could be a source for data quality evaluation. • It could be a source for detecting changes. • It could be a source for data we don’t have (as road directions). • It could be a way to disseminate official data. • So the system should work in both directions.
So we started to work • First attempt: • Contacting with the Spanish OSM association. • But it is a group of geeks • They don’t have an organizational structure. • We couldn’t hire them.
So we started to work • Second attempt: • A Spanish company had worked for Eurostat in a project to compare OSM vs EuroRegionalMaps railways data. So, at least, they knew the OSM data model. • Then we decided to contract them.
The project • “Defining a transformation protocol and a gateway from Spanish INSPIRE TN and OSM databases”. • Budget: 60k € • Subcontractor: Guadaltel
The architecture GATEWAY TN - OSM OSM TN DB INSPIRE TN DB EDITOR SW
The software • Kettle tool for initial migration ETL processes (Pentaho configuration). • TileCalculatorlibrary for inclusion in the bulk load process for OSM data model. • Application to execute migration and synchronization processes from INS TN to OSM and from OSM to INS TN. • iD OSM editor.
The outcomes of the project • Feasibility of the use of OSM environment as a collaborative platform for the maintenance of INS TN database. • Migration protocols allow the communication and track changes between INS TN and OSM databases. • Performance improvements have been needed due to the big amount of data to be migrated. • OSM data model implements a completely de-normalized structure, so errors in the insertion can be reverted to INS TN database. • OSM open data model allows a free insertion and edition of tags and values non standardized for TN.
Next steps • Improving INS TN geometries to facilitate OSM migration process. • Enhancing massive loads process. • Reusing of existing tags in OSM to improve the INS TN mapping. • Developing a plugin for OSM iD editor to manage TN specific data and logic. • Communications, dissemination, training.
OSM, a threat or an opportunity? • A threat • They are taking the place of the NMCAs
OSM, a threat or an opportunity? • An opportunity • Spreading official data
OSM, a threat or an opportunity? • An opportunity • Using OSM data • Only if the contributor declares their data as “public domain”. • If not, the OSM licenses is more restrictive than IGN one. • You can use OSM for commercial porpouses.
