Coordinating Local, State, and National Data Stores
Award Number G10AC00237, Category 2: Framework Data Exchange through Automated Geo-Synchronization
The Carbon Project and the Arkansas Geographic Information Office (AGIO) are pleased to submit this 2010 NSDI Cooperative Agreement Program (CAP) Category 2 Interim Report for the Category 2, “Framework Data Exchange through Automated Geo-Synchronization” effort. Since kickoff in May 2010 the project developed and deployed a federated approach for exchanging local, state and national framework data using geo-synchronization services, easy-to-use shapefiles and common data models. In particular, the project has developed, tested and deployed a unique model for the NSDI that provides methods to ingest county transportation shapefile data into a geo-synchronization federation and synchronize county-level databases to state-level databases. To achieve this in a manner not disruptive to current processes, the system leverages common folder structures consisting of FTP shapefile updates from multiple Arkansas counties. The project team then developed a transformation capability to compare shapefiles to Web Feature Services (WFS) on ESRI ArcGIS Server, extract data changes and then transmit them to a GeoSynchronization Service (GSS) – and also output them as Shapefiles. The capability is based on a new change detection application called the The Carbon Project Change Validator (Figure 1). With this new capability our approach provides a bridge between current shapefile processes and a new generation of NSDI GeoSynchronization. It will also allow the state to advance data stewardship, and federal systems to automatically keep data sets up-to-date as needed. The solution is re-deployable to other sites through open APIs and free tools.
Learon Dalby, GIS Program Manager