OSNI Open Data: Digital Terrain Model for Northern Ireland Sheets 101-150

A Digital Terrain Model (DTM) dataset from the Ordnance Survey of Northern Ireland (OSNI) Open Data portal. The data consists of a grid of regularly spaced points of known height covering 10k map sheet numbers 101-150. The dataset is published under the LPS Open Government Data Licence by the Government Digital Service.

Use Cases

• Generate 3D visualizations of the land surface based on the described grid of height points.
• Perform terrain analysis for hydrological or geological modeling based on the DTM data.
• Integrate elevation data with other geospatial layers like maps or orthophotographs as mentioned in the description.

Strengths

• Data is provided as a structured grid of regularly spaced height points, which is a standard format for terrain models.
• The dataset is published under a specific open government license (LPS Open Government Data Licence).

Limitations

• The exact spatial resolution, grid spacing, and vertical accuracy of the DTM are not specified in the provided metadata.
• Row count, file size, and column-level documentation are unknown, requiring manual inspection after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Ordnance Survey of Northern Ireland (OSNI) via the eu_open_data platform.

Collection Method

Likely derived from aerial or ground survey techniques, but the specific method is not stated.

Time Range

null

Freshness

null

Geography

Northern Ireland, covering the area of OSNI 10k map sheets 101-150.