Centremaps has compiled the most comprehensive range of height information products in terms of detail and coverage available online from one source. The following table details the datasets available for purchase online.
Most of these listed datasets are available both as a Digital Terrain Model (DTM) and Digital Surface Model (DSM).
|Source||Datasets||Data collection method||Resolution||Vertical accuracy (RMSE)||Coverage|
|The Environment Agency||LiDAR||LiDAR & photogrammetry||2m to 0.25m||+/- 15cm||Coastal areas, flood risk zones, urban centres|
|Infoterra||LiDAR||LiDAR||2m or 1m||+/- 15cm||100+ GB urban areas|
|Terrain model||Photogrammetry||5m||+/- 15cm||England|
|Cities Revealed||LiDAR||LiDAR||2m or 1m||+/- 15cm||Numerous urban centres and environs|
|Intermap||NEXT Map Britain||IFSAR||5m||+/- 1m||GB|
|NEXTMAP2 (coming 2009)||
IFSAR + Environment Agency LiDAR
|5m||up to +/- 15cm||GB, with higher detail for EA captured areas|
|Ordnance Survey||OS Profile||Photogrammetry, topographical survey||10m||
+/- 2.5m lowland, +/- 5m mountain / moorland
|Landform Panorama||50m||+/- 5m||GB|
|Land & Property Services (Northern Ireland)||Terrain Model||Photogrammetry||10m||+/- 1m||Northern Ireland|
The specifications of all the available data for your site will be listed prior to purchase to help ensure that the most appropriate dataset is selected.
Click here for our technical guide to height data (PDF - 1.4 MB)
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