tpoint_get_coord tpointseq_azimuth tpointseq_cumulative_length tpointseq_direction tpointseq_is_simple tpointseq_length tpointseq_linear_trajectory tpointseq_speed tpointseq_twcentroid tpointseqset_azimuth tpointseqset_cumulative_length tpointseqset_direction tpointseqset_is_simple tpointseqset_length tpointseqset_linear_trajectory tpointseqset_speed tpointseqset_twcentroid

tpointseqset_direction() bool tpointseqset_direction ( const TSequenceSet *  ss, double *  result  ) Return the direction of a temporal point sequence set. Parameters [in] ss Temporal sequence set [out] result Azimuth between the first and last point Returns True when it is possible to determine the azimuth, i.e., when there are at least two points that are not equal; false, otherwise. @csqlfn Tpoint_direction()