Combining OS MasterMap® Topography Layer with OS Terrain™ 50 Contours in AutoCAD Map 3D

 

Please see the Autodesk Summary page for details of overlaying other datasets in Autodesk software.

 

This topic describes the process of overlaying contour information from OS Terrain™ 50 on top of detailed mapping from OS MasterMap® Topography Layer in AutoCAD Map 3D. Separate instructions are available on how to do this in AutoCAD.

It is assumed that you have already downloaded OS MasterMap® Topography Layer in DWG format and OS Terrain™ 50 contours in Shapefile format for the same area from the Ordnance Survey Data Download service in Digimap. The data should be unzipped and stored in a suitable local or network location.

  1. Open the OS MasterMap® Topography Layer DWG file in AutoCAD Map 3D. At the Open - Foreign DWG File window click Continue opening DWG file.
  2. The downloaded data will be displayed:
  3. To overlay the OS Terrain™ 50 contours on top select Data then Connect to Data... from the Task Pane:
    Connect to data dialog
  4. Select Add SHP Connection as the connection type, give your connection a suitable name (e.g. Terrain 50 Contours) and browse to the OS Terrain™ 50 contours line Shapefile downloaded from Digimap:
  5. Select Connect to establish the data connection.
  6. Click on the Add to Map button AutoCAD add to map button to add the contours to the map:
  7. The contours will be displayed on top of OS MasterMap® Topography Layer.
    MasterMap with Terrain 50 contours

Controlling which layers are displayed

If you find that the map is too cluttered you can turn off layers using the Layer Control tool in AutoCAD Map 3D.

  1. On the Home menu, click on the light bulb to open up the Layer Control.
  2. Click on the light bulb to turn off individual layers.