2011

elevation, slope, and aspect, and drape map data over surfaces. You can view
the data in 3D with walkthrough and flythrough options.
See also:
■ Analyzing Raster-Based Surfaces (page 1186)
■ Adding an Image from a WMS (Web Map Service) (page 445)
To add a raster-based surface to your map
1 In
Display Manager (page 2060), click Data ➤ Connect To Data.
2 In the Data Connect window, select Add Raster Image or Surface
Connection in the Data Connections By Provider list.
3 Under Connection Name, type a name for this connection.
You can give the connection any name you like. This name appears in
Map Explorer as the name of the feature source.
4 Specify the folder that contains your surface. Click the folder icon to
browse to the folder.
5 Click Connect.
6 Hold your cursor over the name of the surface file to see a pop-up window
that displays its coordinate system, for example, UTM27-10.
When you add data to your map, you must specify its original coordinate
system. AutoCAD Map 3D automatically converts the data from that
coordinate system to the one specified for your map.
7 Click Edit Coordinate Systems and, in the
Edit Spatial Contexts (page 1605)
dialog box, click the entry and click Edit.
Select the entry and click Edit to specify the coordinate system for the surface
442 | Chapter 3 Bringing In Data