This command categorizes the slope direction as either N, NE, E, SE, S, SW, W or NW. The program requires 3D Face entities that can be generated by the Draw 3D Grid File command, the Draw Triangular Mesh command, or the Draw Triangulation Faces option of Triangulate & Contour. Each 3D Face is colored by the slope direction zone and a report of the area for each zone is generated. A pinwheel color legend can also be drawn.
There are options to specify inclusion and exclusion areas. When inclusion areas are specified, only the slope area within the inclusion polyline is calculated. Slope area within an exclusion polyline are not included in the calculations. Inclusion and exclusion areas are represented by closed polylines and must be drawn prior to calling this routine. Without inclusion and exclusion polylines, all the slope area of each selected 3D Face is used.
Select 3D Faces
to Analyze ...
Select objects: pick the 3D faces
Slope Direction Colors Choose a color for each
direction.
Select the Inclusion perimeter polylines or
ENTER for none:
Select objects: Pick a closed polyline if needed
Select the Exclusion perimeter polylines or ENTER for
none:
Select objects: Pick a closed polyline if needed
Select point for color legend: pick a point
|
| Original Contours |
|
| Surface Colored by Slope Direction |
Pulldown Menu Location: Surface >> Slope
Analysis
Keyboard Command: dzone
Prerequisite: 3D Face entities