def _evaluate_airports(self, airports, lowest_lat, lowest_lon, lowest_hdg, appr_ils_freq):
'''
pre filter cirteria on airprots
'''
annotated_airports = {}
for airport in airports:
ils_match = None
heading_match = False
min_rwy_start_dist = None
for runway in airport.get('runways', []):
if not filter_runway_heading(runway, lowest_hdg):
# Heading does not match runway
continue
heading_match = True
if ut.convert(runway.get('localizer', {}).get('frequency', 0), ut.KHZ, ut.MHZ) == appr_ils_freq:
ils_match = True
if runway.get('start') and lowest_lat is not None and lowest_lon is not None:
start_dist = great_circle_distance__haversine(
runway['start']['latitude'],
runway['start']['longitude'],
lowest_lat, lowest_lon,
)
min_rwy_start_dist = min(min_rwy_start_dist, start_dist) if min_rwy_start_dist else start_dist
annotated_airports[airport['id']] = {'airport': airport,
'heading_match': heading_match,
'ils_match': ils_match,
'min_rwy_start_dist': min_rwy_start_dist,
'distance': airport['distance']}
return annotated_airports
def _evaluate_airports(self, airports, lowest_lat, lowest_lon, lowest_hdg, appr_ils_freq):
'''
pre filter cirteria on airprots
'''
annotated_airports = {}
for airport in airports:
ils_match = None
heading_match = False
min_rwy_start_dist = None
for runway in airport.get('runways', []):
if not filter_runway_heading(runway, lowest_hdg):
# Heading does not match runway
continue
heading_match = True
if ut.convert(runway.get('localizer', {}).get('frequency', 0), ut.KHZ, ut.MHZ) == appr_ils_freq:
ils_match = True
if runway.get('start') and lowest_lat is not None and lowest_lon is not None:
start_dist = great_circle_distance__haversine(
runway['start']['latitude'],
runway['start']['longitude'],
lowest_lat, lowest_lon,
)
min_rwy_start_dist = min(min_rwy_start_dist, start_dist) if min_rwy_start_dist else start_dist
annotated_airports[airport['id']] = {'airport': airport,
'heading_match': heading_match,
'ils_match': ils_match,
'min_rwy_start_dist': min_rwy_start_dist,
'distance': airport['distance']}
return annotated_airports