Streaming

For a more detailed authenticate description, how to get an API-Key and how to use Tokens, please see the Authenticate Guide.

Streaming Service Manager

Consumption and account balance can be monitored and tracked via the WorldDEM Streaming Service Manager, which can be accessed with any recent browser. Logged in, you see three tabs on the left where you can access a list of your “Approved Requests”, “New Requests” and “Failed Requests”. In “Approved Requests” you can check which AOIs you have already requested, In “Failed request” you can find further information why a request was not successful. Areas already requested are displayed on the map. By selecting an entry listed in the table on the left, the respective AOI is highlighted on the map.

On the top right you can see your available balance and next to it a configuration button. There you can configure two Thresholds: an “Auto Approve Threshold” and an “Auto Reject Threshold”.

Requests which cost up to the amount defined in the “Auto Approve Threshold” will be responded to directly and charged automatically. Requests above the “Auto Reject Threshold” will be rejected directly. For amounts in between, you will find the requests in the third tab, called “New Requests” tab. There you can accept pending requests, or reject them manually. After a timeout of 30s a pending request will be rejected automatically. It is suggested to keep the WorldDEM Streaming Service Manager open while using the WorldDEM Streaming Service.

Viewing

To visualize the WorldDEM, the elevation data was processed as a colorized relief map. The data is available through the OGC WMTS (WebMapTilingService), using version 1.0.0 of this standard. This service can be added in any modern GIS Software. All you need is the URL endpoint and an API-Key of your OneAtlas account. When accessing the API directly, please make sure to add a valid token as authentication.

WMTS URL:

https://worlddem.api.oneatlas.airbus.com/wmts?

This service provides a pyramid of tiles in Geographic (EPSG:4326) projection. The Geographic tile matrix set is described as follows:

• CRS Name: urn:ogc:def:crs:OGC:1.3:CRS84 CRS84
• Top left corner: [ -180 , 90 ]
• Tile size: 256 × 256 pixels
• Up to Zoom level 14

Data Access & 3D Analytics

To access the elevation data we offer an OGC WCS (WebCoverageService), currently supporting version 1.0.0 of this standard. This service can be added in any modern GIS Software. You only need the URL endpoint and an API-Key of your OneAtlas account. If you access the API directly, please make sure to add a valid token as authentication.

WCS URL:

https://worlddem.api.oneatlas.airbus.com/wcs?

Format: GeoTIFF (32 Bit Floating point)

Using the API:

Information about the available layer for your account can be retrieved with the getCapabilities request:

https://worlddem.api.oneatlas.airbus.com/wcs?service=wcs&request=getCapabilities

Detailed information about the specific layers are available with the describeCoverage request. Example for layer “WorldDEM”:

https://worlddem.api.oneatlas.airbus.com/wcs?SERVICE=WCS&VERSION=1.0.0&REQUEST=describeCoverage&coverage=WorldDEM

The elevation data itself can be accessed with the getCoverage request. Here is an example for layer “WorldDEM”:

https://worlddem.api.oneatlas.airbus.com/wcs?SERVICE=WCS&VERSION=1.0.0&REQUEST=getCoverage&COVERAGE=WorldDEM&FORMAT=GeoTIFF&BBOX=8.5,49.5,8.6,49.6&WIDTH=500&HEIGHT=500&CRS=EPSG:4326

Using GIS Software:

This service can be added in any modern GIS Software. You only need the URL https://worlddem.api.oneatlas.airbus.com/wcs? and an API-Key of your OneAtlas account. If you want to use the streaming service with a Desktop GIS we suggest loading both datasets (Viewing and Data Access) and deactivating the Data Access Layer for the visualization. You can then navigate using the Viewing service and do the processing on the Data Access Layer.

Using QGIS

You can easily access the WorldDEM Streaming data with OSGeo’s QGIS Desktop application. QGIS in an Open Source Geographic Information System (GIS) licensed under the GNU General Public License . The procedure to follow is documented on the QGIS website.

Add the WMTS or WCS connection with the respective URLs as described above. For Basic Authentication please use an API-Key:

QGIS Authentication Dialogue WCS:

QGIS Authentication Dialogue WMTS:

Result in QGIS for WMTS service:

Using ArcGis Desktop

You can easily access to the WorldDEM Streaming data with ESRI ArcGIS Desktop, a commercial product used by GIS professionals to compile, use, and manage geographic information. The procedure to follow is documented on the ESRI website.

Add the WMTS or WCS connection with the respective URLs as described above. For Basic Authentication please use an API-Key:

ArcMap Authentication Dialogue WCS:

ArcMap Authentication Dialogue WMTS:

Result in ArcMap displaying WMTS layer and running spatial analysis with WCS: