D-ECHO wrote in Sat Jul 06, 2019 2:49 pm:Yes, genapts850 uses the --max-slope parameter with --max-slope=0 being a completely flat airport and --max-slope=1 being an airport that *can*, if the hgt data demands it, have slopes up to 45° (100%=1). At least that is how I understand it. This occurs within the airport boundaries, as BecOzIcan mentioned, with genapts producing a cliff at the boundaries if the normal terrain elevation does not equal the airport element's elevation there
if one really wants to see how --max-slope works, generate the area around XBEL in hawaii... the now un-used runway there is pretty steep... it rises going from inland to the ocean... the current load in FG chops the hill and places the runway in a canyon that doesn't exist in RL...