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adapted code from Paul St-Aubin and udpated MovingObject.setFeatures to truly find the right features in a list that may not start at 0
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Tue, 14 Mar 2017 17:10:35 -0400
parents d44eba0db517
children
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# get object id, first and last frame numbers, length and number of features
select OF.object_id, min(P.frame_number) as frame1, max(P.frame_number) as frame2, max(P.frame_number)-min(P.frame_number) as length, count(OF.trajectory_id) as nfeatures from positions P, objects_features OF where P.trajectory_id = OF.trajectory_id group by OF.object_id order by nfeatures asc;