Вычисление азимута и расстояния между двумя точками
http://gis-lab.info/qa/great-circles.html Python import math #pi - is pi - 3.1415..., rad - earth sphere radius rad = 6372795 # Points coordinates: llat1 = 77.1539 llong1 = -120.398 llat2 = 77.1804 llong2 = 129.55 # in radians: lat1 = llat1*math.pi/180. lat2 = llat2*math.pi/180. long1 = llong1*math.pi/180. long2 = llong2*math.pi/180. #cosinus and sinus of latitude and longitude differences cl1 = math.cos(lat1) cl2 = math.cos(lat2) sl1 = math.sin(lat1) sl2 = math.sin(lat2) delta = long2 - long1 cdelta = math.cos(delta) sdelta = math.sin(delta) #calculating the length of a large circle y = math.sqrt(math.pow(cl2*sdelta,2)+math.pow(cl1*sl2-sl1*cl2*cdelta,2)) x = sl1*sl2+cl1*cl2*cdelta ad = math.atan2(y,x) dist = ad*rad #initial azimuth calculation x = (cl1*sl2) - (sl1*cl2*cdelta) y = sdelta*cl2 z = math.degrees(math.atan(-y/x)) if (x < 0): z = z+180. z2 = (z+180.) % 360. - 180. z2 = - math.radians(z2) anglerad2 = z2 - ((2*math...