add_slope               Put slope back into data
d_visibility            Computes the directional visibility from a
                        single location in a 3D point cloud
denoise_scene           Filters isolated points from a point cloud
downsample_scene        Reduces the point cloud density
generate_sphere         Generate a spherical point cloud
h_visibility            Compute horizontal visibility
reconstruct_ground      Optimal ground reconstruction for visibility
                        computation
remove_slope            Removes the slope from a TLS scene
sample_scene            Recenters and subsets a 3D scene for visibility
                        estimates
set_position            Set animal position elevation
viewshed3d              Tools to compute visibility in 3D point clouds
                        of ecosystems
viewsheds               Computes cumulated viewsheds
visibility              Computes the visibility from a single location
                        in a 3D point cloud
