DTW.c File Reference

The implementation of Trajectory. More...

#include "../../../h/SpatioTemporal/Trajectory/Similarity.h"
#include "../../../h/Spatial/PointSP/Distance.h"
#include <math.h>
#include <float.h>

Include dependency graph for DTW.c:

Functions
float8 *	DTW (const Trajectory *trajectoryA, const Trajectory *trajectoryB, int32 w, float8 w_percentage, int32 lp, float8 *result)
	The function returns the Dynamic Time Warping. More...
PGDLLEXPORT Datum	DTWV1 (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (DTWV1)

Detailed Description

The implementation of Trajectory.

Author

Marios Vodas (mvoda.nosp@m.s@gm.nosp@m.ail.c.nosp@m.om).

These functions are documented in the Trajectory/Similarity.h

Function Documentation

float8* DTW	(	const Trajectory *	trajectoryA,
		const Trajectory *	trajectoryB,
		int32	w,
		float8	w_percentage,
		int32	lp,
		float8 *	result
	)

The function returns the Dynamic Time Warping.

Parameters

[in]	trajectoryA	The first trajectory
[in]	trajectoryB	The second trajectory
[in]	w	the locality constraint
[in]	w_percentage	if w < 0 then someone can use percentage of the the trajectory by defining this value
[in]	lp	the norm to be used (currently only 1 and 2)
[out]	result	The result

References distanceManhattanPointSP_PointSP(), i(), j, min(), Trajectory::NrPoints, Trajectory::points, PointST::sp, and sqDistancePointSP_PointSP().

Referenced by DTWV1().

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PGDLLEXPORT Datum DTWV1

(

PG_FUNCTION_ARGS

)

References DTW().

Here is the call graph for this function:

PG_FUNCTION_INFO_V1

(

DTWV1

)