Extended Historical GIS (2007 Onwards)
A new system is being developed, partly with funding from the European Union under the QVIZ project, which will no longer be limited to Great Britain:
- The root unit represents the world rather than the British Isles, although more detailed decisions about map projections mean that the system is in practice limited to Europe.
- All coordinates are held using latitude and longitude, not the Ordnance Survey National Grid.
- All geographical names and some other text are held using Unicode (UTF-8).
- Multiple languages are supported, especially when recording geographical names, using Ethnologue codes to identify modern languages and Linguist codes for historical ones.
An enhanced web site based on this extended system was launched in 2009.
Read more about this topic: Great Britain Historical GIS
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