Use the Terrain image service in ArcGIS

Once you've published the world elevation image service, the service can only be used in ArcGIS 10.3 or later. Information on what's available with the terrain image service is included below.

For information on using an image service, see Key concepts for image services in ArcGIS 10.3.1 for Server Help under Publish Services > Types of services > Image services.

Data coverage map

You can explore the DataExtentsMap.mxd located at \\<server-ip>\source_documents\data\WorldElevation\DataExtentsMap. This map provides the coverage extent of various datasets comprising the Terrain service. This map document (.mxd) can be published as a map service.

For information on publishing a map document (.mxd) as a map service, see Publishing a map service in ArcGIS 10.3.1 for Server Help under Publish Services > Types of services > Image services.

Terrain

This dynamic image service provides numeric values representing ground surface heights, based on a digital terrain model (DTM). The ground heights are based on multiple sources. Heights are orthometric (sea level = 0), and water bodies that are above sea level have approximated nominal water heights.

This layer is generally not optimal for direct visualization. By default, 32-bit floating point values are returned, resulting in higher bandwidth requirements. Therefore, usage should be limited to applications requiring elevation data values. Alternatively, client applications can select from numerous additional functions, applied on the server, that return rendered data. For visualizations such as hillshade, elevation tinted hillshade, and slope, consider using the appropriate server-side function defined on this service.

Server functions

This layer has server functions defined for the following elevation derivatives:

  • Slope Degrees
  • Slope Percentage
  • Aspect
  • Ellipsoidal height
  • Hillshade
  • Presymbolized Elevation Tinted Hillshade
  • Presymbolized Slope Degrees
  • Presymbolized Aspect

Server functions for layer

This service includes data with resolutions ranging from over 1,000 meters to approximately 3 meters in some limited areas and each record (raster item) is populated with Dataset_ID and ProductName tags, which can be used for filtering. Since the service is comprised of multiple resolution datasets, you would need to restrict the input to a single resolution (or dataset), when consuming for analysis, using the Dataset_ID or ProductName fields. For example, Dataset_ID = 'NED13' will filter all the NED 1/3 arcsecond tiles.

When using the Terrain image service in geoprocessing tools, use the Make Image Server Layer tool to define some of the properties of the image service, such as the cell size, extent, and query (using Dataset_ID or ProductName). The size of the output layer is limited to 24,000 by 24,000 pixels. To learn more, see Using mosaic datasets and image services in geoprocessing tools.

For information the Make Image Server Layer tool, see Make Image Server Layer in ArcGIS 10.3.1 for Desktop Help under Tools > Tool reference > Data Management toolbox > Layers and Table Views toolset.

For information on using mosaic datasets and image services in geoprocessing tools, see Using mosaic datasets and image services in geoprocessing tools in ArcGIS 10.3.1 for Desktop Help under Manage Data > Data types > Raster and images > Processing and analyzing raster data.