TNT Terrain Operations Highlights:

• Work with large-size DEMs at any resolution (detailed local LIDAR DEMs to continent-sized 90-meter SRTM data)

• Automatically determine illumination parameters for relief shading to match a particular location, date, and time of day

• Compute slope in decimal or integer degrees or as percent slope

• Compute slope direction (aspect) in decimal or integer degrees clockwise from north

• Compute profile (vertical) and plan(horizontal) curvature in radians per meter or radians per 100 meters 

• Choose from several methods for determining the local surface shape when computing slope, aspect, shading, and curvature 

• Determine viewshed from points placed manually or loaded from any geometric object (vector, CAD, or shape) 

• Adjust height above surface indepently for each viewpoint

• Adjust field of view independently for each viewpoint by entering values or using on-screen graphics 

• Determine changes in elevation through time due to erosion, landsliding, or human activities

• Derive stream networks, watersheds, and subwatersheds along with many geomorphic and hydrographic attributes

• Perform contouring, surface fitting, and triangulation operations