Distance.sql File Reference

The implementantion in sql of PointSP. More...

Functions
float8	distance (pointsp pointa, pointsp pointb)
float8	manhattan (pointsp pointa, pointsp pointb)
float8	chebyshev (pointsp pointa, pointsp pointb)

Detailed Description

The implementantion in sql of PointSP.

Author

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

PointSP is a spatial data type used in Hermes

See also

Spatial data types

Function Documentation

float8 chebyshev	(	pointsp	pointa,
		pointsp	pointb
	)

float8 distance	(	pointsp	pointa,
		pointsp	pointb
	)

float8 manhattan	(	pointsp	pointa,
		pointsp	pointb
	)