OSNI 1:1M Raster: Northern Ireland Infrastructure Overview

OSNI Open Data provides a 1:1,000,000 scale raster map depicting infrastructure across Northern Ireland. This static image is suitable for use as a background layer in desktop and web-based mapping applications. The dataset is the smallest-scale raster product from the Ordnance Survey of Northern Ireland, offering a broad geographical overview.

Use Cases

• Creating regional overview maps based on the 1:1,000,000 scale raster imagery.
• Providing background context for thematic data overlays using the infrastructure depiction.
• Developing web mapping applications by integrating the Esri REST API endpoint described in the source notes.

Strengths

• Published as official Open Data by the Ordnance Survey of Northern Ireland (OSNI), indicating an authoritative source.
• Available on multiple government data platforms (eu_open_data, uk_data), suggesting established utility and cross-platform accessibility.

Limitations

• No column or attribute data is provided, as the dataset is a single raster image file, limiting quantitative analysis.
• Metadata is sparse; specific file size, row count, and precise creation date are not available from the provided sources.
• The description notes the Esri REST API will not open directly in a web browser, which may cause initial confusion for some users.

Provenance

Source

Ordnance Survey of Northern Ireland (OSNI), published via Government Digital Service platforms.

Collection Method

Derived from official cartographic survey data, converted to a raster format.

Freshness

Last updated date is listed as 2026-07-08 on multiple platforms, though this appears to be a future date and may indicate a data entry error or placeholder.

Geography

Northern Ireland