MI_Distance

Description

Returns the geographic distance between two geometry objects.

Syntax

MI_Distance ( geom1, geom2, unit, calculationType )

Arguments

geom1 is an expression which returns a geometry,

geom2 is an expression which returns a geometry,

unit is a linear unit specification, and

calculationType is a string that indicates whether to perform a Spherical or Cartesian calculation. There is no default.

Example

Returns the distance between the specified geomety and each countries.

select MI_Distance(MI_Box(-20,-20,20,20,'epsg:4326'),Obj,'mi','Spherical') as distance from "/Samples/NamedTables/WorldTable" where country in ('Canada','Vietnam','Brazil','China','Japan')
			

Remarks

Calculates the distance between two geometries. The value returned is a double and represents a value in the units specified by the units argument.

Valid values for unit are the following distance units: