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The OS MasterMap is the premier digital product of the Ordnance Survey. It was launched in November 2001. It is a database that records every fixed feature of Great Britain larger than a few meters in one continuous digital map. Every feature is given a unique TOID (TOpographical IDentifier), a simple identifier that includes no semantic information. Typically each TOID is associated with a polygon that represents the area on the ground that the feature covers, in National Grid coordinates. OS MasterMap is offered in themed "layers", for example a road layer and a building layer, each linked to a number of TOIDs. Pricing of licenses for OS MasterMap data depends on: the total area requested, the layers licensed, the number of TOIDs in the layers, the period in years of the data usage.
OS MasterMap can be used to generate maps for a vast array of purposes. Although the scale on a digital map is much more flexible than a paper map, one can print out maps from OS MasterMap data with detail equivalent to a traditional 1:1250 paper map.
Ordnance Survey claims that OS MasterMap data is never more than six months out of date, thanks to continuous review. The scale and detail of this mapping project is so far unique. Around 440 million TOIDs have so far been assigned, and the database stands at 600 terabytes in size.[1]
The OSMasterMap is the premier digital product of the Ordnance Survey. It was launched in November 2001. It is a database that records every fixed feature...
of OSMasterMap data. In 2009 the simple mapping client (Classic) was replaced with a new interface, Roam, which makes use of OpenLayers "slippy map" technology...
available under an Open Government Licence (OGL). The OS Open USRN dataset is derived from the OSMasterMap Highways Network product. The Government Digital...
to anything else when the feature no longer exists. In OSMasterMap, Ordnance Survey's master database, every feature is identified by a TOID. Other attributes...
the national mapping agency of Great Britain – it forms part of the OSMasterMap suite of products. Designed to streamline route planning and resource...
Observations and Measurements schema for observation metadata and results OSMasterMap GML SensorML schema for describing instruments and processing chains...
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Archived from the original on 26 May 2015. Retrieved 26 May 2015. OSMasterMap (Map). Ordnance Survey. "Cliff close to Exmoor National Park". Everything...
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Apple_partition_map. There is a multitude of examples like this to be found on the internet. "IOApplePartitionScheme.h". Apple. 2009. Retrieved 2016-08-07. Mac OS: Technical...
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