Yep, I correct for that.
But, u & v interpolation better, at least for large angle differences.
I like method 3, though probably slightly slower.
What is the best way to interpolate wind data? Which method do you use?
Interpolating the u and v vectors, results in the speed of the interpolated value being relatively lower.
Interpolating the direction and speed, rather than the vectors, appears appropriate for small angles, but not for large angles.
Perhaps a combination, dependent on the size of the angle?
I am doing a lot of interpolation in the traj plugin, to get the trajectories smoother.
I have been working on a flight planner: https://community.windy.com/topic/8745/windy-plugin-fp
it is a bit cumbersome, since you have to load it as a plugin, but please try it out.
still working on it.