To specify draping options

Specify draping options for imported data. Draping options determine the relationship between the imported data and the level of the terrain.

1. Click to open the data sources panel.
2. Right-click on the desired data source to configure and select Configure.
3. Select the Source tab.
   
4. In the Draping Options field, do the following:
   • If the data lies on the terrain, select Drape.

     If this data lies under or above the terrain, select Set Level.

   • If there is a single property that represents the relationship between the data you're importing and the level of the terrain, select it from the drop-down list.
     Note: To specify a data source property to represent the level, click and enter an expression.
5. Select Convert Closed Polylines to Polygons when importing coverage areas.