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Ordnance Survey – Great Britain's national mapping agency

Land-Form PROFILE® Plus

Tiles in series 10 548
Data structure Point
Height accuracy
(Route Mean Square Error)
Data source - recent LiDAR +/- 0.25 m or better
Data source - recent photogrammetry +/- 0.5 m or better
Base data* +/- 2.5 m (10m in mountain and moorland)
Resolution Data source - recent LiDAR and photogrammetry 2 m
Base data* 10 m
Storage volumes per tile NTF 5 Mb compressed
40 Mb uncompressed
DXFTM** 18 Mb compressed
1 Gb uncompressed
ArcGRID 12 Mb compressed
60 Mb uncompressed
Data source LiDAR, photogrammetric capture, Land-Form PROFILE
Availability GB coverage
Tile size 5 km by 5 km

* Base mapping is the existing Land-Form PROFILE data that will exist where no higher accuracy data has been ingested.

** Due to large file sizes, orders for DTMs in DXF format are limited to 1,000 tiles.



Sample data

By downloading the following data you agree to be bound by the 'Discover' Data Licence terms and conditions

Sample data is available in the following zipped archives:

Zipped archive TF16SE NTF (9.04 Mb; NTF files)

Zipped archive TF16SE ArcGrid (7.41 Mb; ArcGrid files)

Zipped archive TF16SE DXF (29 Mb; DXF files)

If you haven't downloaded or used sample data before, we recommend that you read our guidance notes.

More...


User guide

The user guide (PDF) contains information on the technical specification and product specification for Land-Form PROFILE Plus to help you understand how to use the data.


DXF is a trademark of Autodesk Inc.

 

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