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Ordnance Survey – Great Britain's national mapping agency

Strategi®

Technical Information


Specification Strategi
Data source 1:250 000 scale digital database
Availability Great Britain, England, Scotland and Wales
Coordinate resolution 1.0m
Data structure Vector link and node
Feature codes 216
Transfer format
  • BS 7567 (NTF v2.0) Level 3
  • DXF AutoCAD® (compatible release 12)
  • ESRI Shapefile / E00 text
  • MapInfo MID/MIF
Storage volumes
(approximate)
NTF DXF Shapefile MID/MIF
Great Britain North 63Mb 262Mb 358Mb 79Mb
South 89Mb 357Mb 344Mb 111Mb
England North 28Mb 115Mb 195Mb 35.4Mb
Mid 54Mb 210Mb 370Mb 66.7Mb
South 26Mb 105Mb 174Mb 32.3Mb
Scotland 49Mb 206Mb 344Mb 61.3Mb
Wales 18.5Mb 206Mb 127Mb 28Mb
Update interval 12 months

Sample data

The following archives of Strategi data are available for download:

stratntf.exe

Contents: tile SS
File name: ss.ntf
Format: NTF
File size: 1.1 Mb


stratdxf.exe

Contents: tile SS
File name: ss.dxf
Format: DXF AutoCAD (compatible release 12)
File size: 1.8 Mb


showeed.exe

Contents: Files for AutoCAD viewing of extended entities of DXF format files
File names: showeed.dcl, showeed.lsp
Format: For use with DXF
File size: 31 Kb


stratmidmif.exe

Contents: tile SS
File names: mid/mif files
Format: mid/mif
File size: 1.5 Mb


stratshape.exe

Contents: tile SS
File names: shape files
Format: shp/dbf
File size: 1.8 Mb


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

More...


User guide

The user guide contains information on the technical specification and product specification for Strategi to help you understand how to use the data.

Download (1.6 Mb PDF)

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