returns the M coordinate.returns the M coordinate. M is for mileage or the like. M equal to 245.3 could be 245.3 km of road or 0.3 distance from buoy 245 to buoy 246 or similar.
returns the M coordinate.returns the M coordinate. M is for mileage or the like. M equal to 245.3 could be 245.3 km of road or 0.3 distance from
buoy 245 to buoy 246 or similar.