What products are available under NIMA?

OSNI produces a range of raster and vector mapping including height data, aerial imagery, addressing and historical mapping at various scales.

Digital mapping can be used in GIS and CAD applications to provide accurate, attributed topography for a range of applications and add cartographic context to your data.

(Note: Not all products have product guides or specifications. This page will be updated once these become available)

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With over 870,000 address records, Pointer is the most comprehensive and authoritative address database for Northern Ireland.

It is maintained by LPS with input from the local councils and Royal Mail. Each record has full address details, a unique property reference number (UPRN), address and building status information along with Irish Grid co-ordinates.

Pointer data will link to OSNI Fusion through the land parcel, building and road identifiers. As it contains Royal Mail Intellectual Property, there may be implications regarding royalties for usage.

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LPS Property Data

Property Data products contain all properties in the domestic and non-domestic valuation lists. The data includes a unique property ID as well as the Pointer UPRN, but does not include coordinates.

Data is provided as a comma separated text file (csv) with full Northern Ireland coverage. Updates- only files are not available. The data contains Royal Mail Intellectual Property and so there may be implications regarding royalties for usage.

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Central Postcode Directory (CPD)

CPD contains Irish Grid co-ordinates for the centroid point for each postcode in Northern Ireland.

This dataset is maintained by NISRA and provides a direct look-up between postcodes and a range of administrative boundaries and NISRA geographies. The data is supplied in Access Database (.mdb) and csv formats.

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OSNI Orthophotography

Orthophotography (ortho) is high quality georeferenced digital 3 Band aerial photography.

Orthophotographs are scale-accurate raster images that offer a detailed bird’s-eye view of the landscape.

Any distortions caused by the earth’s surface or aircraft movement have been removed by a process of ortho-rectification to ensure the images are accurate.

Photographs are captured in optimal weather conditions to provide the best possible images.

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OSNI 4 Band Near Infra-Red Orthophotography

OSNI 4 Band orthophotograpy is produced through the same process as the 3 Band product and both are updated in conjunction with each other on the same cycle.

This 4 Band raster data can be used in a wide variety of applications such as vegetation classification, measuring vegetation health and feature change detection.

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OSNI Enhanced Digital Terrain Model (DTM)

A Digital Terrain Model (DTM) is a digital file providing a highly detailed representation of the topographical (i.e. relief) variations in the Earth’s surface.

Combined with other digital data, such as maps or orthophotographs, it can provide a 3D image of the land surface.

The OSNI Enhanced DTM includes breaklines at major changes of slope and terrain elevations for ground positions at 60m spaced horizontal intervals. It is updated in line with the orthophotography.

The added dimension and visualisation offered by a DTM can help in many decision-making processes.

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OSNI Digital Surface Model (DSM)

The OSNI Digital Surface Model is produced from aerial imagery using a photogrammetric process and is updated in line with the orthophotography and DTM products.

This high quality data is available as raster and point cloud, both at 40cm spatial resolution. It can be used for a wide variety of applications: line of sight, planning, aspect modelling (e.g. solar panels) and remote sensing applications such as change detection.

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OSNI 1:10,000 Raster

The 1:10,000 scale raster mapping is derived directly from the OSNI large-scale database.

This dataset provides clear, detailed information on features such as roads, fields, water and settlements, overlaid by contours at 10m intervals.

The map styling has been completely revised to produce clear mapping suitable for use in Geographic Information applications.

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OSNI 1:25,000 Activity Raster

An award winning series of six 1:25,000 scale raster maps tailored to outdoor leisure activities that are also available as a paper product.

The series consists of the Mournes, Sperrins, Lough Erne, Strangford Lough, Glens of Antrim and Causeway Coast and Rathlin Island.

They are individually designed for each specific area and show details of features such as tracks, walks, and cliffs; the Lough Erne map concentrates on water activities, showing navigation guides and hydrographic information.

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OSNI 1:50,000 Raster

The 1:50,000 scale raster mapping provides a digital equivalent to the popular paper Discoverer Series with each of the 54 raster tiles covering 20x20km.

Each tile is provided with a full colour version with grid, a low colour version and a townlands map. Relief shading has been reduced on the low colour raster to make it more suitable for GI use.

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1:250,000 Raster

The 1:250,000 scale raster provides a clear map covering the whole of Northern Ireland and highlighting features such as roads, golf courses, settlements and sites of interest.

A black and white outline version is provided along with a full colour image. The mapping is also available as the ‘Ireland North’ paper map which is part of the ‘Holiday Ireland’ series.

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OSNI Belfast Street Map Raster

The OSNI Belfast Street Map is a high resolution raster map at 1:12,000 scale showing clear street level detail for use in any geographic information software.

It covers the entire Greater Belfast area and is also available as a paper map. A street gazetteer is provided with both the digital and paper versions.

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Historical Mapping

The OSNI Historical Archive provides over 20,000 scanned versions of historical mapping products dating from 1835 to the late 1950’s.

The archive is a unique educational resource which gives you digital access to maps of significant cultural and social value.

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OSNI Fusion

OSNI Fusion is the most recent largescale vector product and replaces OSNI Largescale.

It consists of a more intuitive structure and contains 11 main themes, with the existing largescale feature types being held as attributes.

Each feature will have a unique identifier and life cycle information. The full polygonisation of OSNI Fusion will facilitate the linkage of other products via unique identifiers.

Consequently, a range of Fusion products will be developed through the amalgamation of Fusion layers with other key OSNI Products, such as Pointer and the Transport Network.

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OSNI Fusion Transport Network

OSNI Fusion Transport Network is an enhanced road network vector product currently being developed to replace OSNI Road Centreline.

It consists of lines, points and attributes, such as road name, number, classification, form of way, directionality and unique street reference number, which will provide a direct link to addresses in Pointer.

Drive restriction data will be added to include restrictions on height, weight, use etc. Features, such as bridges, traffic calming and level crossings will also be included in the dataset.

It will be fully integrated and updated in line with OSNI Fusion and will form part of the Fusion suite of products.

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OSNI Road Centreline

The OSNI Road Centreline is a vector dataset, created at 1:1,250 and 1:2,500 scale, comprising of line geometry for classified roads in Northern Ireland.

The geometry is attributed with road name, classification and unique street reference number, which can be used as a direct link to addresses in Pointer.

This product will be replaced by the OSNI Fusion Transport Network and withdrawn from supply.

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OSNI 1:50,000 Vector

The 1:50,000 scale vector data is made up of a number of distinct datasets including vegetation, relief and drainage as well as settlement outlines.

The administrative boundary and road layers are now available under Open Government Licence. The datasets are available as full coverage of Northern Ireland.

What is the NIMA Support Service?

At the heart of NIMA lies it’s dedicated team of Geographic Information (GI) industry experts - the NIMA Support Team.

Over 80% of data used by our public sector services – environment, health, education, security, infrastructure, agriculture, heritage, sport and employment – has a geographic element, such as an address.

By analysing and visualising this Geographic Information (GI), unseen patterns, gaps, and issues can emerge from the data, leading to increased awareness, understanding and improved decision making within the public sector.

Who can use the NIMA Support Service?

The NIMA Support Service is free at the point of use for all core Northern Ireland Civil Service Departments. The support service is not available to Local Government Mapping Agreement (LGMA) customers, however, like NIMA participants, they have ongoing access to strategic advice and guidance via a dedicated OSNI support manager.

How can the NIMA Support Service help?

The NIMA Support Team can help you realise the benefits of, and achieve the full potential from, your Geographic Information.

They can help your organisation make improvements to strategic planning and enhance operational efficiencies, provide evidence for policy development, and achieve financial savings through:

  • Mapping

  • Your dedicated NIMA Support Officer can help you identify, transform and visualise your data using state-of-the-art GI platforms to create custom static, dynamic and interactive maps.

  • Analysing

  • They can undertake complex spatial analyses to answer specific business questions by leveraging your GI assets and enriching them with external or third-party datasets to output robust analytical results.

  • Learning

  • You can obtain professional advice on data-related policies and best practices.

Can I see examples of completed projects?

You can view some of our NIMA support case studies here. These outline the work completed and the benefits realised by the requesting department.

How can I find out more about the NIMA Support Service?

You can email us to find out how your departmental NIMA Support Officer may be able to assist you.

View all the OSNI products highlighted above in a handy PDF guide ...