OSNI Open Data: 10-Meter Resolution Digital Terrain Model for Sheets 51-100

A Digital Terrain Model (DTM) from the Ordnance Survey of Northern Ireland (OSNI) provides a grid of regularly spaced height points for creating 3D land surface images. This download covers 10k sheet numbers 51-100, published by the Government Digital Service under an Open Government Licence. The dataset is described as large and may take time to download.

Use Cases

• Generate 3D visualizations of the land surface based on the described DTM grid and height points.
• Conduct terrain analysis for engineering or environmental planning using the regularly spaced elevation data.
• Create composite maps by integrating the DTM with other geospatial data like orthophotographs as mentioned in the description.

Strengths

• Data is provided at a 10-meter resolution, indicating a specific level of detail.
• Covers a defined geographic series (OSNI 10k sheet numbers 51-100).
• Published under a clear open government license for reuse.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.
• The description notes it is a large download, which may require significant bandwidth and storage.

Provenance

Source

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

Collection Method

Likely derived from aerial or ground survey techniques.

Time Range

null

Freshness

null

Geography

Northern Ireland, covering the area for OSNI 10k sheet numbers 51-100.