Computing from .shp, "time_elapsed" is physically incorrect

[dbetchkal]

In Convert an ESRI shapefile (.shp) to a NMSIM trajectory (.trj).ipynb the line

time_elapsed = np.cumsum(velocity/np.array([np.linalg.norm(v) for v in V]))

should really be

time_elapsed = np.cumsum(np.array([np.linalg.norm(v) for v in V])/velocity)