This command colors 3D faces for a surface for whether the 3D
face is either visible or hidden from a specified view point. The
3D faces need to be already drawn before running this command. The
3D faces can come from either a grid or triangulation surface. The
colors for visible and hidden are set in the dialog. There are also
options to change the layer of the 3D faces for visible or hidden
status. The Eye Height is added to the elevation at the View Point
to set the elevation of the viewer. The Target Height sets how high
of an object the viewer can see for the visible areas. The View
Position by Point prompts for a single 3D point to calculate the
viewshed from. The Polyline method prompts for a 3D polyline and
checks multiple view positions at an interval along the
polyline.
Graphic shows position of view point,
surface contours and 3D faces colored with yellow for visible
surface and blue for hidden surface.
Pick view point: pick point
Select 3D Faces to Analyze...
Select objects:
pick 3D faces
Pulldown Menu Location: Surface
Keyboard Command: viewshed
Prerequisite: 3D faces