OSNI Open Data: 50m Digital Terrain Model of Northern Ireland

A Digital Terrain Model (DTM) provides a 3D image of the land surface through a grid of regularly spaced points of known height. This 50-meter resolution DTM is published by the Ordnance Survey of Northern Ireland (OSNI) as open data. The dataset is large and may take significant time to download.

Use Cases

• Generate 3D visualizations of the landscape based on the DTM's height grid.
• Perform terrain analysis for hydrological or environmental modeling based on the elevation data.
• Integrate elevation data with other geospatial layers like maps or orthophotographs for composite analysis.

Strengths

• Data is provided at a 50-meter spatial resolution, offering a specific level of terrain detail.
• The dataset is published under an open government license, facilitating reuse.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The last update date is unknown; freshness unverified.
• Row count and total file size are unknown, which may limit suitability assessment.

Provenance

Source

Ordnance Survey of Northern Ireland (OSNI)

Collection Method

null

Time Range

null

Freshness

null

Geography

Northern Ireland