Create Merged Terrain Models

Create a new terrain model by merging two surfaces.

Home / Tools / Create / Terrain Model / Merge Terrain Models

• Terrain module
• Two terrain models

The following controls are available:

Control	Description
Name	Type the name to assign to the created terrain model or click to use the next available auto incremented name.
Use name as layer	Do one of the following: Select the check box to create the terrain model on a layer with the same name as the terrain model. Clear the check box to create the terrain model on the active layer. Note: The created layer is based on the defined template layer or the active layer if a template is not defined. Ensure the name is a valid layer name.
From Project	Select the project that contains the updated section of the terrain model.
From Terrain Model	Select the terrain model that contains the updated section.
To Project	Select the project that contains the terrain model that requires updating.
To Terrain Model	Select the terrain model to update.

• Use to update a terrain model with new surface data.
• If no project is selected then the terrain model list contains terrain models from the current project or the reference file.
• The merged model:
  • Retains the triangle faces from the From Terrain Model and any triangle faces from the To Terrain Model that are unaffected by the update.
  • Contains new triangle faces that are formed where the two models intersect. The intersecting edges retain the height from the From Terrain Model.
  • Is a new terrain model and does not share topology with either the From Terrain Model or the To Terrain Model.
• The triangles from the From Terrain Model that are fully overlapped are discarded.
• To display height colour banding, set the terrain model Colour setting in display options to Height (Banded) and display terrain model faces.

• Create Terrain Models
• Examine Height to Terrain Model
• Manage Colour Bands
• Display Options