1:250,000 raster

A raster map is a static image displayed on screen which is suitable as background mapping.

Each raster image is made up of a series of equally sized cells (or pixels) arranged in rows and columns. 1:250,000 raster is cartographically identical to the paper Holiday North map.

Key features

  • OSNI raster images are geo-referenced so that they display in their right geographic location when viewed in a Geographic Information (GI) software package
  • complete coverage of Northern Ireland and border counties of the Republic of Ireland
  • shows roads, with A and B class roads numbered, railways, villages, towns, cities, county boundaries and selected points of interest
  • also shows forests, rivers, place names, car parks, picnic sites, golf courses, caravan parks, and antiquity sites
  • altitude tinting gives a clear indication of terrain height


  • background mapping
  • route planning
  • desk-top publishing
  • web information services

Technical information

  • can be displayed on most GI and graphics software packages
  • available in tiff and ecw formats
  • Irish Grid co-ordinates can be found for any point on the map
  • available as one tile covering the whole of Northern Ireland
  • no file conversion necessary
  • supplied at 300 dpi
  • file size 215MB (tiff)

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