gh_as_sf                Convert a gh object into an sf object
gh_available_spt_columns
                        Get a vector with available columns of the spt
                        endpoint
gh_bbox                 Extract the bounding box from a gh object
gh_get_info             Get information about the GraphHopper instance
gh_get_isochrone        Get isochrones for a given start point
gh_get_route            Get a route for a given set of points
gh_get_routes           Get multiple routes
gh_get_spt              Get the shortest path tree for a given start
                        point
gh_instructions         Extract the instructions from a gh route object
gh_points               Extract the points from a gh route object
gh_set_api_url          Set gh API base url
gh_spt_as_linestrings_sf
                        Build lines from a gh spt object
gh_spt_columns          Select the columns to be returned by a spt
                        request
gh_time_distance        Extract time and distance from a gh route
                        object
