Download 6.5 MB pdf: OS MasterMap Topography Layer user guide and
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Product supply Supply definition For this alpha release, OS MasterMap Topography Layer – Building Height Attribute is offered for most of the major urban areas in Great Britain (England, Wales and Scotland). A coverage map will be provided on the Ordnance Survey website. It is made available in comma-separated values (CSV) format only. Customers will be supplied the data using the same area of interest (AOI) as their OS MasterMap Topography Layer contract. Update This is an alpha release and as such there is currently no defined update and maintenance cycle. OS MasterMap Topography Layer technical specification annexe E v1.12 – 03/2014 © Crown copyright Page 150 of 150