Clip with Polygon causes IndexError: list index out of range

I am trying to add the clip approach in the 2-ship-data.ipynb notebook by adding below the get_intersecting chunk the following:

all_trajectories = traj_collection.trajectories
arrivals = [ traj.clip(area_of_interest) for traj in all_trajectories ] 

And I am getting the following error & I cannot understand why ?

 15        if type(row['spatial_intersection']) == LineString:
 16         -> pt0 = Point(row['spatial_intersection'].coords[0])
 17             ptn = Point(row['spatial_intersection'].coords[-1])
 18             t = row['prev_t']

IndexError: list index out of range

[wendellwt]

Thank you!! It works fine now.

[anitagraser]

I think a check of empty linestring is required in the calculation of spatial_intersections

You’re right. That did the trick. Thank you both for your help!