Simplification.c File Reference

The implementation of Trajectory. More...

#include "../../h/SpatioTemporal/Trajectory/Simplification.h"
#include "../../h/SpatioTemporal/Trajectory/Interpolation.h"
#include "../../h/SpatioTemporal/Trajectory/SessionParameters.h"
#include "../../h/Spatial/SegmentSP/Distance.h"
#include "../../h/Utilities/Utilities.h"
#include <math.h>

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Functions
Trajectory *	simplifyTrajectory (const Trajectory *trajectory, float8 samplingPeriod, bool strict, int32 precision)
Trajectory *	simplifyEpochTrajectory (const Trajectory *trajectory, float8 samplingPeriod, bool strict, int32 precision)
PGDLLEXPORT Datum	simplifyTrajectoryV1 (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (simplifyTrajectoryV1)
static int32	_simplifyDPTrajectory (const Trajectory *trajectory, int32 j, int32 k, float8 eps, bool plus, int32 **ret)
Trajectory *	simplifyDPTrajectory (const Trajectory *trajectory, float8 eps, bool plus)
PGDLLEXPORT Datum	simplifyDPTrajectoryV1 (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (simplifyDPTrajectoryV1)

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/Simplification.h

Function Documentation

static int32 _simplifyDPTrajectory ( const Trajectory *  trajectory, int32  j, int32  k, float8  eps, bool  plus, int32 **  ret  )

static

References distanceSegmentSP_PointSP(), SegmentSP::e, i(), SegmentSP::i, j, Trajectory::points, and PointST::sp.

Referenced by simplifyDPTrajectory().

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PG_FUNCTION_INFO_V1

(

simplifyTrajectoryV1

)

PG_FUNCTION_INFO_V1

(

simplifyDPTrajectoryV1

)

Trajectory* simplifyDPTrajectory	(	const Trajectory *	trajectory,
		float8	eps,
		bool	plus
	)

References _simplifyDPTrajectory(), allocateTrajectory(), cloneTrajectory(), i(), Trajectory::NrPoints, and Trajectory::points.

Referenced by consistentGiSTSegmentST(), and simplifyDPTrajectoryV1().

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PGDLLEXPORT Datum simplifyDPTrajectoryV1

(

PG_FUNCTION_ARGS

)

References simplifyDPTrajectory(), and updateMetadataTrajectory().

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Trajectory* simplifyEpochTrajectory	(	const Trajectory *	trajectory,
		float8	samplingPeriod,
		bool	strict,
		int32	precision
	)

References allocateTrajectory(), atInstantTrajectory(), cloneTrajectory(), e(), i(), j, Trajectory::NrPoints, Trajectory::points, precision, seconds2timestamp(), PointST::t, and timestamp2seconds().

Referenced by simplifyTrajectoryV1().

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Trajectory* simplifyTrajectory	(	const Trajectory *	trajectory,
		float8	samplingPeriod,
		bool	strict,
		int32	precision
	)

References allocateTrajectory(), atInstantTrajectory(), cloneTrajectory(), differenceInSeconds(), i(), Trajectory::NrPoints, Trajectory::points, PointST::t, and timestampPlusSeconds().

Referenced by consistentGiSTSegmentST(), and simplifyTrajectoryV1().

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PGDLLEXPORT Datum simplifyTrajectoryV1

(

PG_FUNCTION_ARGS

)

References interval2seconds(), simplifyEpochTrajectory(), simplifyTrajectory(), updateMetadataTrajectory(), and validateInterpolationPrecision().

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