1:50,000 raster
Raster maps are static digital images - each pixel is geo-referenced to the Irish Grid.
This series is cartographically identical to the paper Discoverer series (1:50,000).
Key features
- clear detailed information on roads, footpaths, woods, water features, important buildings and height contours
- three distinct presentations
- cartographically identical to the Discoverer series paper map showing Irish Grid lines
- reduced colour version without Irish Grid lines suitable for overlaying vector data
- basic detail version highlighting townland areas
- all topographic features are joined across sheet edges, providing coverage of the entire country
- compatible with Republic of Ireland Discovery map series - both map series have the same co-ordinate system, same data source in border areas and a similar cartographic style and feature content
- fully geo-referenced and compatible with other OSNI data
Applications
- backdrop mapping
- development planning
- environmental analysis
- land-use planning
- route planning
- distance measurement
Technical information
- derived directly from OSNI Discoverer database, resulting in a high resolution (300 dpi) quality colour image
- can be displayed on most graphics software packages
- up-to-date mapping, with each map reviewed for revision every six years
- available in tiff, jpeg and ecw formats
- area covered by each tile 20km x 20km
- typical file size 65mb (tiff) 8mb (ecw)