MidiMap OSNI is based on the complete Ordnance Survey of Northern Ireland (OSNI) Small Scale (1:50,000 Scale) data set, made up of vector layers.
It consists of topographic features including lakes, urban areas, plus rivers, canals and the coastline, together with text labels for settlements and water features. It also contains all driveable roads (other than dead-ends shorter than 200m), junctions and roundabouts, plus national railway routes and named stations.
MidiMap OSNI suggested applications
- Major roads routing;
- Customisable backdrop mapping;
- Site location;
- Territory management;
- Environmental analysis.
MidiMap OSNI features & use
- Districts and counties;
- Includes lakes, woods and urban areas as regions;
- Rivers, canals, coastline and administrative boundaries;
- Topography theme as in TopoMap OSNI, plus Communications as in TravelMap OSNI, both from same source data set;
- Text labels for settlements and water features;
- Fits closely with RangerMap OSNI product derived from Ordnance Survey of Northern Ireland 1:50,000 Scale Colour Raster dataset;
- Available as full national NI coverage or smaller ‘cut-out’ extracts (priced per sq km);
- Also available as separate themes: TopoMap OSNI (Topography theme) and TravelMap OSNI (Communications theme).
MidiMap OSNI technical information
A workspace (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.
Suitable for scales on screen in the range 1:2,000,000 to 1:20,000. More layers become visible as you zoom in.
The location of boundaries is accurate to within 50m. This is within one pixel on screen at scales of up to 1:200,000.
The Irish Transverse Mercator Grid co-ordinate system is used. The coastline fits closely with RangerMap OSNI.
The storage space required is about 60Mb for full NI coverage in MapInfo TAB format.
Main formats available: MapInfo TAB, ESRI SHP, AutoCAD DXF, Illustrator EPS and others.
MidiMap OSNI is licensed for internal business use by a specified number of users and includes hard copy prints up to A3 in size. Publishing on the Internet can require the next multi-user pricing band.
After the first year there is an annual charge equal to the initial price, including one update per year.
MidiMap OSNI coverage available
- Northern Ireland; or
- Selected area (priced per sq km); and
- Great Britain (companion product – MidiMap - derived from Ordnance Survey Meridian 2 data set).