OpenRoads Tip: Import Terrain from Graphics "Not an Editable Terrain"

The problem may occur after you have created an OpenRoads terrain element using the Create Terrain Model by Graphical Filter.  Then you may need to delete a vertex or swap a triangle edge of the terrain but OpenRoads gives you the following error message “Not an Editable Terrain.”


To correct the situation so you can use the Edit Terrain Model toolbar. You will first need to remove the rule of the terrain.

  1. Go to the Tasks dialog and expand the General Geometry group.
  2. Select the Remove Rules icon.
  3. Select and Accept the terrain.

Now when you try to delete a vertex or swap a triangle edge you will be able to do so.

Note: After removing the rule the terrain is now divorced from the original graphics. In other words, make sure you really want to do this.

In next months tip we will show you how to modify graphics imported using a filter and have edits to those graphics update the terrain element.


Contact Us for all of your OpenRoads configuration and workflow development.

Bob Mecham

Bob Mecham

Bob joined the training and consulting firm EnvisionCAD in 2000 and became a partner in June of 2002. He has specialized in the software MicroStation & InRoads from Bentley Systems, Inc. Mr. Mecham is an industry expert in the implementation, configuration, development, and customization of the two software applications MicroStation and InRoads. Bob instructs MicroStation classes ranging from fundamentals to advanced productivity. He has extensive experience using, implementing, and instructing both InRoads Survey and InRoads Site Design. Bob received his degree in Civil Engineering Technology from the Madison Area Technical College in 1992 and has over a decade of experience in the use, implementation, and management of software and CADD systems. He has worked for a wide range of organizations providing services from general survey and engineering services to specific applications such as landfills and site design.

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