Program code to cluster air masses

[imanberriban]

Hello everyone,

I have a question if there is someone has the answer.

I tried to program a code to cluster air masses for a period of 2 months, following the method used by hysplit but I can't find the same results. after, I tried to make an approximation to minimize the computation time, when I calculated the Euclidean distance between the trajectories, I tried not to go through all the endpoints of the trajectories, but I took a step of 6 endpoints and by chance I find the desired results.

The problem now is when I test this code over a period of 2 years with trajectories of different length, I discover that this "step" is no longer valid. I want to know is what I have to do to get the same results.

Thank you.