Summary method for OPTICs results
Displays summaries of the reachability plot. Currently its the five points summary of the reachabilities and a stem and leaf display. The latter should not be confused with the reachability plot. If you need the altter, use plot().
an object of class optics
additional arguments passed to summary.numeric
an object of class summary.optics wit the reachabilities, the summary and minpts and epsilon parameters