CREATE EXTENSION pointcloud;
INSERT INTO pointcloud_formats (pcid, srid, schema)
VALUES (1, 0, 
'<?xml version="1.0" encoding="UTF-8"?>
<pc:PointCloudSchema xmlns:pc="http://pointcloud.org/schemas/PC/1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <pc:dimension>
    <pc:position>1</pc:position>
    <pc:size>4</pc:size>
    <pc:description>X coordinate as a long integer. You must use the scale and offset information of the header to determine the double value.</pc:description>
    <pc:name>X</pc:name>
    <pc:interpretation>int32_t</pc:interpretation>
    <pc:scale>0.01</pc:scale>
  </pc:dimension>
  <pc:dimension>
    <pc:position>2</pc:position>
    <pc:size>4</pc:size>
    <pc:description>Y coordinate as a long integer. You must use the scale and offset information of the header to determine the double value.</pc:description>
    <pc:name>Y</pc:name>
    <pc:interpretation>int32_t</pc:interpretation>
    <pc:scale>0.01</pc:scale>
  </pc:dimension>
  <pc:dimension>
    <pc:position>3</pc:position>
    <pc:size>4</pc:size>
    <pc:description>Z coordinate as a long integer. You must use the scale and offset information of the header to determine the double value.</pc:description>
    <pc:name>Z</pc:name>
    <pc:interpretation>int32_t</pc:interpretation>
    <pc:scale>0.01</pc:scale>
  </pc:dimension>
  <pc:dimension>
    <pc:position>4</pc:position>
    <pc:size>2</pc:size>
    <pc:description>The intensity value is the integer representation of the pulse return magnitude. This value is optional and system specific. However, it should always be included if available.</pc:description>
    <pc:name>Intensity</pc:name>
    <pc:interpretation>uint16_t</pc:interpretation>
    <pc:scale>1</pc:scale>
  </pc:dimension>
  <pc:metadata>
    <Metadata name="compression"></Metadata>
    <Metadata name="ght_xmin"></Metadata>
    <Metadata name="ght_ymin"></Metadata>
    <Metadata name="ght_xmax"></Metadata>
    <Metadata name="ght_ymax"></Metadata>
    <Metadata name="ght_keylength"></Metadata>
    <Metadata name="ght_depth"></Metadata>
    <Metadata name="spatialreference" type="id">4326</Metadata>
  </pc:metadata>
</pc:PointCloudSchema>'
);
CREATE TABLE pt_test (
	pt PCPOINT
);
INSERT INTO pt_test (pt) VALUES ('00000000010000000100000002000000030004');
INSERT INTO pt_test (pt) VALUES ('00000000010000000200000003000000030005');
INSERT INTO pt_test (pt) VALUES ('00000000010000000300000004000000030006');
SELECT PC_Get(pt, 'Intensity') FROM pt_test;
 pc_get 
--------
      4
      5
      6
(3 rows)

SELECT Sum(PC_Get(pt, 'y')) FROM pt_test;
 sum  
------
 0.09
(1 row)

SELECT PC_AsText(pt) FROM pt_test;
          pc_astext          
-----------------------------
 ( 1 : 0.01, 0.02, 0.03, 4 )
 ( 1 : 0.02, 0.03, 0.03, 5 )
 ( 1 : 0.03, 0.04, 0.03, 6 )
(3 rows)

DROP TABLE pt_test;