trackpy.subtract_drift¶

trackpy.subtract_drift(traj, drift=None)¶

Return a copy of particle trajectores with the overall drift subtracted out.

Parameters:	traj : DataFrame of trajectories, including columns x, y, and frame drift : optional DataFrame([x, y], index=frame) like output of compute_drift(). If no drift is passed, drift is computed from traj.
Returns:	traj : a copy, having modified columns x and y