Oracle Spatial User's Guide and Reference - InfoLab

SDO_GEOM.SDO_LENGTH
Format
Description
Parameters
SDO_GEOM.SDO_LENGTH(
geom IN SDO_GEOMETRY,
dim IN SDO_DIM_ARRAY
[, unit IN VARCHAR2]
) RETURN NUMBER;
or
SDO_GEOM.SDO_LENGTH(
geom IN SDO_GEOMETRY,
tol IN NUMBER
[, unit IN VARCHAR2]
) RETURN NUMBER;
Returns the length or perimeter of a geometry object.
geom
Geometry object.
SDO_GEOM.SDO_LENGTH
dim
Dimensional information array corresponding to geom, usually selected from one of
the xxx_SDO_GEOM_METADATA views (described in Section 2.4).
unit
Unit of measurement: a quoted string with unit= and an SDO_UNIT value from
the MDSYS.SDO_DIST_UNITS table (for example, 'unit=KM'). See Section 2.6 for
more information about unit of measurement specification.
If this parameter is not specified, the unit of measurement associated with the data
is assumed. For geodetic data, the default unit of measurement is meters.
Geometry Subprograms 13-29