Length of Route Segment incorrect

[antoniolocandro]

The coded length of the route segment doesn't match the length that I calculate using the start/end points

See the following example:

74.0 254.0 69.3 42.5016666666667 -37.0016666666667 42.675 -36.1733333333333 With those pos the Distance should be 70.67 NM instead of the 69.3 NM provided in the example The positions would be start = 423006N 0370006W end = 424030N 0361024W forward_azimuth = 73.90843° backward_azimuth =254.46899° distance = 38.16 NM, 70.66570km Using geodesic calculator Line Definition Start Point: Latitude: N42:30:06.00000, Longitude: W37:00:06.00000 End Point: Latitude: N42:40:30.00000, Longitude: W36:10:24.00000 Result: Pt1 to Pt2 Pt2 to Pt1 Azimuth: 73.90843 254.46899 Reverse Azimuth: 254.46899 73.90843 Distance: 38.16 (nm) 70665.70 (m) See check using QGIS which provides the same value as the geodesic calculator 

[porosnie]

Corrected