def display_great_circle( a_latitude, a_longitude, b_latitude, b_longitude, units, unit_r):
dist = distance.great_circle_distance( a_latitude, a_longitude, b_latitude, b_longitude, unit_r )
bearing = distance.great_circle_bearing( a_latitude, a_longitude, b_latitude, b_longitude )
print( )
print( " Path between A ..................................... {0}" .format( lat_lon_str(a_latitude, a_longitude) ) )
print( " Solar zone UTC{0}".format( int(a_longitude/15) ) )
print( " and B ..................................... {0}" .format( lat_lon_str(b_latitude, b_longitude) ) )
print( " Solar zone UTC{0}".format( int(b_longitude/15) ) )
print( " Great Circle distance ( {1:14s} ).... {0:6.1f}".format(dist, units.__doc__) )
diff = int(b_longitude/15) - int(a_longitude/15)
h, m = divmod( diff*60, 60 )
print( " Solar Time difference (hr:min).......... {0:02d}:{1:02d}".format(h,m) )
print( " Bearing from A ......................... {0:6.2f}°" .format(bearing))
print( " Bearing from B ......................... {0:6.2f}°" .format(180-bearing))
print( )
print( " To A INTERMEDIATE PLOTS To B")
print( " └─«{0:^11s}«─ Bearing«─ ┌── From Plot ──┐ ─»Bearing ─»{0:^11s}»─┘".format(units.__doc__) )
total= 0
r= dist/10
for s in range(11):
theta= distance.great_circle_bearing( a_latitude, a_longitude, b_latitude, b_longitude )
pt= distance.great_circle_destination( a_latitude, a_longitude, r, theta, unit_r )
print( "{0:9d} {1:6.1f} {2:5.1f}° «─ {3:^16s} ─» {4:5.1f}° {5:6.1f}".format(s, total, bearing, lat_lon_str(*pt), (180+bearing)%180, dist-total ) )
a_latitude, a_longitude = pt
total += r
def search_lat_lon( data ):
"""Returns the Place that matches a lat-lon query."""
lat= input_float( " ENTER: Latitude (minus if South)......? " )
lon= input_float( " ENTER: Longitude (minus if West)......? " )
if lat is None or lon is None: return
# Sort into order by distance between lat, lon and item in database.
by_distance= list( sorted( data, key=lambda i:
distance.great_circle_distance(i.latitude, i.longitude, lat, lon) ) )
return pick_from( by_distance )
def grid_square():
today = datetime.datetime.now(tz=solar.utc)
home= None
while home is None:
mode= input( "Home QTH (c)oordinates, (g)rid, or (q)uit? (c/g/q) " ).lower()
if mode == 'q':
return
elif mode == 'c':
lat= input_float( "ENTER: Latitude in decimal degrees (+° if North, -° if South)? " )
lon= input_float( "ENTER: Longitude in decimal degrees (+° if East, -° if West)? " )
if lat is None or lon is None: return
grid= gridsq.latlon_2_grid( lat, lon )
home= grid
lat_home, lon_home= lat, lon
elif mode == 'g':
grid_raw= input( "ENTER: Grid square code (enter 2, 4, or all 6 characters)? " )
lat, lon = gridsq.grid_2_latlon( grid_raw )
home= grid_raw
lat_home, lon_home= lat, lon
rise, _, set = solar.rise_transit_set( lat, lon, today )
print( "Home", home, gridsq.grid_2_latlon(home), rise, set )
R= None
while R is None:
dist_choice= input( "Choose: DX in (k)ilometers, (s)tatute miles or (n)autical miles? (k/s/n) " ).lower()
if dist_choice == 'k':
R = distance.KM
elif dist_choice == 's':
R = distance.SM
elif dist_choice == 'n':
R = distance.NM
count= 0
while True:
mode= input( "Away QTH (c)oordinates, (g)rid, or (q)uit? (c/g/q) " ).lower()
if mode == 'q':
break
elif mode == 'c':
lat= input_float( "ENTER: Latitude in decimal degrees (+° if North, -° if South)? " )
lon= input_float( "ENTER: Longitude in decimal degrees (+° if East, -° if West)? " )
if lat is None or lon is None: return
grid= gridsq.latlon_2_grid( lat, lon )
elif mode == 'g':
grid= input( "ENTER: Grid square code (enter 2, 4, or all 6 characters)? " )
lat, lon = gridsq.grid_2_latlon( grid )
count += 1
dx_range = distance.great_circle_distance( lat_home, lon_home, lat, lon, R )
rx_bearing = distance.great_circle_bearing( lat_home, lon_home, lat, lon )
rise, _, set = solar.rise_transit_set( lat, lon, today )
print( count, grid, lat, lon, dx_range, rx_bearing, rise, set )
