Tracking of isolines

By sections of the semantic characteristic the isolines are traced by method of search by turn and analysis of corresponding sections. An attribute of the traced isoline is its full "disappearance" on edges of a triangulation. Isolines can be both opened and closed. Each isoline is smoothed out and saved into a target user map after tracking.  User has an opportunity to choose code of created object, by default isolines are formed with a code 1000000002 - (marking of linear (выделение линейных)). At object the semantic characteristic will be filled which corresponds to that characteristic for which construction of isolines was done.