Configure a web elevation layer

You can configure your web elevation layer to use a specific tiling scheme and determine where it is cached and what Limited Error Raster Compression (LERC) value is used. When you choose the tiling scheme, keep in mind that web scenes require all cached layers, including your basemap and elevation layers, to use the same tiling scheme. If you plan to use this web elevation layer with an existing basemap or elevation layer, use the same tiling scheme for all. For more information on web scene tiling scheme requirements, see Tiling scheme requirements in the Basemap and elevation layers help topic.

This workflow explains how to modify the default configuration of an elevation web layer. To begin the sharing process, set general properties, and finish sharing, see Share a web elevation layer.

1. Click the Configuration tab.
2. Click the Tiling Scheme drop-down arrow and choose a tiling scheme for your cache.

   The tiling scheme determines the number of levels of detail, the tile dimensions, and the tile origin of the cache. These settings define tile boundaries and must be the same for different web layers used in a web map. The available tiling schemes are described in the following table:

   Same as basemap	This is the default tiling scheme when the scene containing the elevation layer includes a basemap.
   Auto-suggest	This is the default tiling scheme when the scene containing the elevation layer is a local scene and does not include a basemap. A tiling scheme is suggested based on the coordinate system of your scene. The levels of detail defined in this tiling scheme are valid for a global extent, so any web layers cached using this tiling scheme can be displayed together. Although the tiling scheme is valid for a global extent, only the extent defined in the map properties is cached. This tiling scheme appears only when you share an elevation layer from a local scene.
   ArcGIS Online/Bing Maps/Google Maps	This is the default tiling scheme when the scene containing the elevation layer is a global scene and does not include a basemap. The coordinate system of the elevation layer is projected on the fly to WGS 1984 Web Mercator (Auxiliary Sphere). The default tile width and height is 256 by 256 pixels. Scale levels for caching range from 0 to 23.
   WGS 1984 Geographic Coordinate System, Version 2	The web layer is projected to the WGS 1984 Geographic Coordinate System. The default tile width and height is 256 by 256 pixels. Scale levels for caching range from 0 to 22.
   Existing cached map/image service	The tiling scheme of an existing hosted tile layer or an existing ArcGIS Server map or image service is used. The tiling scheme .xml file of the layer or service is downloaded to C:\Users\<user profile>\My Documents\ArcGIS\TilingSchemes\Downloaded. AllSource honors the parameters specified in the existing layer or service, with the exception of antialiasing. Antialiasing options set for the application are used.
   Tiling scheme file	A tiling scheme that you create is used. You can create a tiling scheme .xml file with the Generate Map Server Cache Tiling Scheme geoprocessing tool. Additional tiling scheme files can be imported from C:\Program Files\ArcGIS\Pro\Resources\TilingSchemes. The tile image format defaults to PNG if the tile image format is not defined in the tiling scheme file. AllSource honors the parameters specified in the tiling scheme file, with the exception of antialiasing. Antialiasing options set for the application are used.

3. If you are sharing to ArcGIS Enterprise and chose Reference registered data, under Options, choose Cache automatically on the server or Cache manually on the server. If you chose Copy all data, you can also choose Cache locally.

   Note:

   If you chose a server other than the hosting server on the General tab, the Cache locally option is not available. If you want to cache locally, select the hosting server. In this situation, the server folder setting is ignored.
   1. If you are caching locally, specify a temporary location by typing a valid location in the Temp cache location text box. Alternatively, click the Browse button and browse to the desired location. This location is where the tile package will be created, uploaded, and published.

      If you are sharing to ArcGIS Online, the web elevation layer is always cached locally.

4. Optionally, change the LERC tolerance value.

   The web elevation layer will be cached using LERC. Specify a tolerance value that represents the maximum allowable error per pixel in the units of the data. For example, if the dataset is in meters and you want to ensure accuracy within 10 centimeters, enter 0.1.

5. Optionally, under Estimate, click Calculate to estimate the cache size. On the Estimate Cache Size dialog box, click the drop-down arrow and choose Good or Best for the estimation quality. Click the Start estimating cache button . The number of tiles and storage space is estimated for each cached level of detail and totaled. Click OK.

   The default static estimate is based on a general assumption about average tile size and does not consider the specific properties of your map. When you estimate the cache size, sample tiles of your map are built. This means that the tiling scheme, image format, and compression are taken into account (as is LERC compression for elevation layers).

   The best estimate creates more sample tiles and takes longer to calculate than the good estimate. To cancel the estimation process, click Stop estimating cache . If you adjust the tiling scheme after estimating the cache size—for example, if you change the levels of detail or the image format—the quality estimate on the sharing pane reverts to static. You need to estimate the cache size again.