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Surfaces model topography. They are comprised of elements (triangles) that are defined by three nodes.

Topics in this section are:

Active Surface: The active DTM Surface.

Surface Triangulation: Triangulate nodes to form a surface.

Audit Boundary Elements: Delete narrow boundary elements.

Node Grid: Generate a grid of nodes.

Surface Shading: Colours used for surface shading. .

Value Shading: Colours used for node value shading.

Surface Operations:

oSlope Analysis.

oSurface Area.

oVolume Calculations.

oMerging Surfaces.