Am 29.12.2021 um 11:42 schrieb Andrew C Aitchison: > Is this the max or the average height of the square ?
Mmmm... Now I'm unsure... > Do you need to warn of pylons, skyscrapers, bridges or radio masts ? > These are unlikely to be included in such map data. None of them. Gound elevation > I note that you say aircraft must fly above 600m > but this wont apply to working helicopters and takeoff/landing. Well, I simplified... <flying instructor mode> ICAO says: 2000ft over GND reduced to a minimum of 500ft over GND if coulds or airspace obligate the pilots to descend. Under 500ft GND to fly is just for take off and landing allowed. Helicopters need a special permission to descend the 500ft GND, too. </flying instructor mode> ;) Regards Luca Bertoncello ([email protected]) _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
