OSNI Largescale NI Outline: Northern Ireland Land Polygon

OSNI Largescale NI Outline is a polygon dataset representing the land area of Northern Ireland. The data is derived from OSNI Largescale mapping and has been topologically cleansed and attributed to create a seamless, authoritative outline. It is available in multiple geospatial formats, including GeoJSON, ESRI Shapefile, and KML, and is published under an open government license.

Use Cases

• Creating base maps for Northern Ireland based on the authoritative land outline.
• Performing spatial joins and analysis using the topologically cleansed polygon boundary.
• Integrating the outline into web or desktop mapping applications via available WMS or REST services.

Strengths

• Data is topologically cleansed, ensuring geometric consistency for analysis.
• Published under the OGL-UK-3.0 license, permitting open use and redistribution.
• Available in multiple standard geospatial formats, including GeoJSON and ESRI Shapefile.

Limitations

• No column names or detailed schema are provided in the source metadata.
• Key metadata such as row count, file size, and last update date are consistently missing.
• The dataset's derivation from 'OSNI Largescale' suggests it is a generalized product, not the most detailed source data.

Provenance

Source

Government Digital Service (via OSNI Largescale mapping)

Collection Method

Derived and topologically cleansed from OSNI Largescale source data.

Geography

Northern Ireland