AdminMap OSNI is based on part of the Ordnance Survey of Northern Ireland (OSNI) 1:50,000 Scale Vector data set, made up of vector layers. It consists of wards or communities and equivalent electoral divisions, plus local government districts and county boundaries, in the form of polygon regions.
AdminMap OSNI suggested applications
- Demographic and electoral visualisation;
- Marketing analysis;
- Asset management;
- Environmental impact analysis.
AdminMap OSNI features & use
- Identify which administrative boundaries contain particular places, and vice versa;
- Join data from the Northern Ireland Census (NISRA) or similar sources, shading a thematic map;
- Size of each administrative area unit given in hectares;
- Equivalent wards, district and borough boundaries nested within counties;
- Match the constituency boundaries in MemberMap OSNI;
- Fits with TrackerMap OSNI and RangerMap OSNI products derived from OSNI raster datasets;
- Available as full national coverage or smaller ‘cut-out’ extracts (priced per sq km).
AdminMap OSNI technical information
A workspace file (for use in MapInfo Professional GIS) or project file (for use in ESRI ArcView/GIS) opens all the layers and sets zoom layer thresholds that determine when the layers are visible.
The location of boundaries is accurate to within 3m. This is within one pixel on screen at scales of up to 1:10,000.
The Irish Transverse Mercator Grid co-ordinate system is used. The coastline fits closely with RangerMap OSNI (derived from 1:50,000 Scale Raster from OSNI).
The storage space required is about 5Mb for full NI coverage in MapInfo TAB format.
Main formats available: MapInfo TAB, ESRI SHP, AutoCAD DXF, Illustrator EPS and others.
AdminMap OSNI coverage available
- Northern Ireland; or
- Selected area (priced per sq km); also
- Great Britain (companion product – AdminMap - derived from part of the Ordnance Survey Great Britain Boundary-Line dataset)