NEXTMap 5 - Elevation Data (Streaming)
Provides NEXTMap 5 DSM and DTM at 5 meter resolution.
Description
A data block that provides streamed high resolution elevation data acquired on a global basis. The datasets are available as a digital terrain model (DTM) and digital surface model (DSM).
See this block on the marketplace.
Technical information
Description
- The DSM is hydro-enforced and includes surface elevations from terrain, vegetation and cultural features (buildings, roads).
- The DTM is hydro-enforced and includes the bare earth, where surface features (buildings, vegetation etc.) have been removed.
Compatible blocks
- K-Means Clustering
- RF Viewshed
- Viewshed
Geographic coverage
The datasets are available worldwide. Please note that the coverage for DSM and DTM can differ.
Data coverage for Nextmap 5m DTM
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Data coverage for Nextmap 5m DSM
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For more information about data coverage, please refer to the Intermap website.
Dataset information
| Specifications | Description |
|---|---|
| Spatial resolution | 5 m |
| Vertical accuracy | 1.6 m (LE90) |
| Horizontal accuracy | 3.5 m (CE90) |
| Image type | Radar (IFSAR) |
| Acquisition date | Data acquisition upon request |
| Bit depth per pixel | 32-bit |
| Horizontal coordinate system | WGS84 |
| Vertical coordinate system | varies depending on region* |
| Can be reused in an UP42 workflow | No |
Vertical Coordinate Systems
| Region | Vertical datum | Corresponding horizontal datum |
|---|---|---|
| Australia | AHD (AUSGeoid98) | GDA94 |
| Canada | CGVD28 (GSD95) | NAD83 |
| Europe | EVRS2000 (EGG07) | ETRS89 |
| United Kingdom | ODN (OSGM91) | OSGB1936 |
| USA | NAVD88 (Geoid99) | NAD83 |
| Other | EGM96 | ITRF2000 |
Limitations
- The streamed image or any derived dataset that contains the original pixel values can't be downloaded. For more information about the end user license agreement, please refer to the marketplace.
- The minimum AOI size is 25 km2.
- This block can return a maximum of 1000 tiles per job, which means that the maximum AOI size is 6250 km2.
How it works
| Supported JSON parameters | Default value | Min | Max | Examples | |
|---|---|---|---|---|---|
clip_to_aoi | true | n.a. | n.a. | "clip_to_aoi": true | |
bbox/intersects | null | 25 km2 | 6250 km2 | Please check the examples from the JSON parameters. |
Examples
Example based on a workflow created with the data block NEXTMap 5 - Elevation Data (Streaming) and Viewshed:
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Capabilities
Output
raster
| up42_standard | |
|---|---|
bands | [
"dsm",
"dtm"
] |
dtype | float |
format | GTiff |
resolution | 5 |
To know more please check the block capabilities specifications.