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SDO_PC_PKG.TO_GEOMETRY
Format
Description
Parameters
Usage Notes
Examples
SDO_PC_PKG.TO_GEOMETRY(
pts IN BLOB,
num_pts IN NUMBER,
tin_tot_dim IN NUMBER,
srid IN NUMBER DEFAULT NULL,
blk_domain IN SDO_ORGSCL_TYPE DEFAULT NULL
) RETURN SDO_GEOMETRY;
Returns a geometry object representing all or part of a point cloud.
pts
BLOB containing the points.
num_pts
Maximum number of points to be included in the resulting geometry.
tin_tot_dim
Number of spatial dimensions defined for the data.
SDO_PC_PKG.TO_GEOMETRY
srid
Spatial reference (coordinate system) ID associated with the data. If this parameter is
null, no SRID value is associated with the data.
blk_domain
(Not currently used.)
This function returns a single multipoint SDO_GEOMETRY object that represents all
point geometries in the pts parameter. For example, the points could reflect the result
of a clip operation or the contents of an entire block.
Section 1.11.2 describes how to use point clouds to model solids.
The following example returns a multipoint collection geometry object representing a
point cloud. It is taken from the sdo_pc.sql example program, which is under
$ORACLE_HOME/md/demo/examples/PointCloud/plsql/ if you installed the
files from the Oracle Database Examples media.
. . .
-- Return points in blk_id of the point cloud as a multipoint collection.
select sdo_pc_pkg.to_geometry(
a.points, -- point LOB
a.num_points, -- # of points in the LOB
SDO_PC_PKG Package (Point Clouds) 28-11