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Ordnance Survey – Great Britain's national mapping agency

Strategi® FAQs

Are the polygons within Strategi data explicit or implied?

Polygons are implied in NTF and DXF. The stylised MID/MIF and Shapefile 2002 formats have been created to contain explicit polygons.


I would like each settlement boundary to be defined separately rather than as part of an amalgamated urban area – can the data be structured in this way?

Ordnance Survey has investigated this issue, but it is not possible to find a definitive source for defining the separate urban areas.


There have been difficulties associated with representing the text in Shapefile. How can I ensure that the text draws up in a cartographic style?

The native shapefile format used by ArcView GIS does not support text, thus any text files converted into shapefile format will become a coverage of points. In order to display cartographic text in ArcView (including orientated text), it is necessary to translate the data into ArcInfo Export Format (E00), and then use the Import 71 utility (supplied with ArcView) to convert the text data into Arc coverage. The Arc coverage can then be loaded into ArcView in exactly the same way as a shapefile (choosing Add Theme from the View menu).

Note: The ArcView will display shapefiles (and Arc coverages) with a random point / line / region / text style each time they are opened. The ArcView legend files have therefore been created to enable the data to be displayed with the same symbology whenever it is displayed. IMPORTANT NOTE: In order for the legend files to work, they must have the same filename as the shapefile to which they correspond, for instance a_roads_polyline.SHP must have a legend file called a_roads_polyline.AVL.


How can I ensure that the symbols display?

The stylised Shapefile requires the True Type font 25 000 PointSyms. Please download this file (use the link below), to the fonts folder on the hard drive of your workstation in order to open and display the Tourist and Transportation point symbols.

Download 25 000_PointSyms.ttf

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