MI_Length

Description

Returns the geographic length of a line or polyline geometry object.

Syntax

MI_Length ( geometry, unit, calculationType )

Arguments

geometry 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 length of a highway from the CanadaHighway table.

select highway from CanadaHighway where MI_Length(Obj,'mi','Spherical') <= 50

Remarks

The value returned is a double and represents a value in the units specified by the units argument. MI_Length is applicable only to geometries of type Curve, LineString, and MultiCurve. Any other type of input geometry results in a value of zero.

Valid values for unit are the following distance units: