def test_all_lon_in_point_one_increments(self):
acc = 3
random.seed(360)
total_length = 0
count = 0
max = 0
min = 999999
for i in range (-1800,1800):
count = count + 1
test_lat = (random.random() * 180) - 90
test_lon = i / 10
geohexa = latlon_to_geohexa(test_lat, test_lon, accuracy=acc)
if (len(geohexa) > max):
max = len(geohexa)
if (len(geohexa) < min):
min = len(geohexa)
lat, lon = geohexa_to_latlon(geohexa)
error = distance(test_lat, test_lon, lat, lon)
self.assertTrue (error < acc)
total_length = total_length + len(geohexa)
self.assertEqual (max, 10)
print('\nTotal length of geohexa for all lon in 0.1 increments at', acc, 'meter accuracy:',total_length)
print('Average length of geohexa:', total_length/count)
print('Min length of geohexa:', min)
print('Max length of geohexa:', max, '\n')
def test_many_random_lat_lons_near_north_pole(self):
random.seed(42)
total_length = 0
for i in range (0,MANY):
test_lat = (random.random() * 10) + 80
test_lon = (random.random() * 360) - 180
geohexa = latlon_to_geohexa(test_lat, test_lon, accuracy=ACCURACY)
lat, lon = geohexa_to_latlon(geohexa)
error = distance(test_lat, test_lon, lat, lon)
self.assertTrue (error < ACCURACY)
total_length = total_length + len(geohexa)
print('\nTotal length of geohexa for', MANY, 'random co-ordinates near the North Pole at', ACCURACY, 'meter accuracy:',total_length)
print('Average length of geohexa:', total_length/MANY, '\n')
def test_latlon_to_geohexa_and_back_accuracy_for_millimeter(self):
test_lat, test_lon = -46.896522, 168.130336 # NZ Oyster Bar
geohexa = latlon_to_geohexa(test_lat, test_lon, accuracy=MM)
lat, lon = geohexa_to_latlon(geohexa)
error = distance(test_lat, test_lon, lat, lon)
self.assertTrue (error < MM)
def test_latlon_to_geohexa_and_back_accuracy_for_meter(self):
test_lat, test_lon = 64.123565, -21.805507 # Reykjavik Brewery
geohexa = latlon_to_geohexa(test_lat, test_lon, accuracy=METER)
lat, lon = geohexa_to_latlon(geohexa)
error = distance(test_lat, test_lon, lat, lon)
self.assertTrue (error < METER)
def test_latlon_to_geohexa_and_back_accuracy_for_ten_km(self):
test_lat, test_lon = 1.285864, 103.851831 # Singapore Boat Quay
geohexa = latlon_to_geohexa(test_lat, test_lon, accuracy=TEN_KM)
lat, lon = geohexa_to_latlon(geohexa)
error = distance(test_lat, test_lon, lat, lon)
self.assertTrue (error < TEN_KM)
def test_distance_between_two_lat_lons(self):
# from south to north of Vauxhall Bridge - approx 200 meters
self.assertEqual( round(distance(51.487141, -0.125873, 51.488178, -0.128224), 8), 199.48427672)