--- /dev/null
+++ b/pgsql/expected/pointcloud_pg9_1.out
@@ -0,0 +1,709 @@
+set client_min_messages to ERROR;
+CREATE EXTENSION pointcloud;
+SELECT PC_Version();
+ pc_version 
+------------
+ 1.2.1
+(1 row)
+
+INSERT INTO pointcloud_formats (pcid, srid, schema)
+VALUES (1, 0, -- XYZI, scaled, uncompressed
+'<?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">none</Metadata>
+    <Metadata name="spatialreference" type="id">4326</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+),
+(3, 0, -- XYZI, scaled, dimensionally compressed
+'<?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">dimensional</Metadata>
+    <Metadata name="spatialreference" type="id">4326</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+)
+,(4, 0, -- (I1,X,Y,Z,I2), scaled, uncompressed
+'<?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>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>I1</pc:name>
+    <pc:interpretation>uint16_t</pc:interpretation>
+    <pc:scale>1</pc:scale>
+  </pc:dimension>
+  <pc:dimension>
+    <pc:position>2</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>3</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>4</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>5</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>I2</pc:name>
+    <pc:interpretation>uint16_t</pc:interpretation>
+    <pc:scale>1</pc:scale>
+  </pc:dimension>
+  <pc:metadata>
+    <Metadata name="compression">none</Metadata>
+    <Metadata name="spatialreference" type="id">4326</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+)
+,(10, 0, -- All (signed) interpretations, uncompressed
+'<?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:name>x</pc:name>
+    <pc:size>1</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>2</pc:position> <pc:name>y</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>3</pc:position> <pc:name>i2</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int16_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>4</pc:position> <pc:name>i4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>int32_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>5</pc:position> <pc:name>i8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>int64_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>6</pc:position> <pc:name>f4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>float</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>7</pc:position> <pc:name>f8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>double</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+</pc:PointCloudSchema>'
+)
+,(11, 0, -- All (signed) interpretations, dimensionally-compressed
+'<?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:name>x</pc:name>
+    <pc:size>1</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>2</pc:position> <pc:name>y</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>3</pc:position> <pc:name>i2</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int16_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>4</pc:position> <pc:name>i4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>int32_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>5</pc:position> <pc:name>i8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>int64_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>6</pc:position> <pc:name>f4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>float</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>7</pc:position> <pc:name>f8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>double</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:metadata>
+    <Metadata name="compression">dimensional</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+),
+(20, 0, -- XYZ, unscaled, dimensionally compressed
+'<?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:name>X</pc:name>
+    <pc:interpretation>int32_t</pc:interpretation>
+  </pc:dimension>
+  <pc:dimension>
+    <pc:position>2</pc:position>
+    <pc:size>4</pc:size>
+    <pc:name>Y</pc:name>
+    <pc:interpretation>int32_t</pc:interpretation>
+  </pc:dimension>
+  <pc:dimension>
+    <pc:position>3</pc:position>
+    <pc:size>4</pc:size>
+    <pc:name>Z</pc:name>
+    <pc:interpretation>int32_t</pc:interpretation>
+  </pc:dimension>
+  <pc:metadata>
+    <Metadata name="compression">dimensional</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+)
+;
+CREATE TABLE IF NOT EXISTS pt_test (
+    pt PCPOINT(1)
+);
+\d pt_test
+     Table "public.pt_test"
+ Column |    Type    | Modifiers 
+--------+------------+-----------
+ pt     | pcpoint(1) | 
+
+DELETE FROM pt_test;
+INSERT INTO pt_test (pt) VALUES ('00000000020000000100000002000000030004');
+ERROR:  no entry in "pointcloud_formats" for pcid = 2
+LINE 1: INSERT INTO pt_test (pt) VALUES ('00000000020000000100000002...
+                                         ^
+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_Get(pt) FROM pt_test;
+       pc_get       
+--------------------
+ {0.01,0.02,0.03,4}
+ {0.02,0.03,0.03,5}
+ {0.03,0.04,0.03,6}
+(3 rows)
+
+SELECT PC_AsText(pt) FROM pt_test;
+             pc_astext              
+------------------------------------
+ {"pcid":1,"pt":[0.01,0.02,0.03,4]}
+ {"pcid":1,"pt":[0.02,0.03,0.03,5]}
+ {"pcid":1,"pt":[0.03,0.04,0.03,6]}
+(3 rows)
+
+SELECT PC_AsText(PC_Patch(pt)) FROM pt_test;
+                                  pc_astext                                  
+-----------------------------------------------------------------------------
+ {"pcid":1,"pts":[[0.01,0.02,0.03,4],[0.02,0.03,0.03,5],[0.03,0.04,0.03,6]]}
+(1 row)
+
+SELECT PC_AsText(PC_Explode(PC_Patch(pt))) FROM pt_test;
+             pc_astext              
+------------------------------------
+ {"pcid":1,"pt":[0.01,0.02,0.03,4]}
+ {"pcid":1,"pt":[0.02,0.03,0.03,5]}
+ {"pcid":1,"pt":[0.03,0.04,0.03,6]}
+(3 rows)
+
+SELECT Sum(PC_MemSize(pt)) FROM pt_test;
+ sum 
+-----
+  75
+(1 row)
+
+CREATE TABLE IF NOT EXISTS pa_test (
+    pa PCPATCH(1)
+);
+\d pa_test
+     Table "public.pa_test"
+ Column |    Type    | Modifiers 
+--------+------------+-----------
+ pa     | pcpatch(1) | 
+
+DELETE FROM pa_test;
+INSERT INTO pa_test (pa) VALUES ('0000000002000000000000000200000002000000030000000500060000000200000003000000050008');
+ERROR:  no entry in "pointcloud_formats" for pcid = 2
+LINE 1: INSERT INTO pa_test (pa) VALUES ('00000000020000000000000002...
+                                         ^
+INSERT INTO pa_test (pa) VALUES ('0000000001000000000000000200000002000000030000000500060000000200000003000000050008');
+INSERT INTO pa_test (pa) VALUES ('000000000100000000000000020000000600000007000000050006000000090000000A00000005000A');
+INSERT INTO pa_test (pa) VALUES ('000000000100000000000000020000000600000007000000050006000000090000000A00000005000A');
+INSERT INTO pa_test (pa) VALUES ('000000000100000000000000020000000600000007000000050006000000090000000A00000005000A');
+SELECT PC_Uncompress(pa) FROM pa_test LIMIT 1;
+                                   pc_uncompress                                    
+------------------------------------------------------------------------------------
+ 0101000000000000000200000002000000030000000500000006000200000003000000050000000800
+(1 row)
+
+SELECT PC_AsText(pa) FROM pa_test;
+                        pc_astext                         
+----------------------------------------------------------
+ {"pcid":1,"pts":[[0.02,0.03,0.05,6],[0.02,0.03,0.05,8]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+(4 rows)
+
+SELECT PC_EnvelopeAsBinary(pa) from pa_test;
+                                                                                     pc_envelopeasbinary                                                                                      
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ \x010300000001000000050000007b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+(4 rows)
+
+SELECT PC_Envelope(pa) from pa_test;
+                                                                                         pc_envelope                                                                                          
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ \x010300000001000000050000007b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+(4 rows)
+
+SELECT PC_AsText(PC_Union(pa)) FROM pa_test;
+                                                                                 pc_astext                                                                                  
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ {"pcid":1,"pts":[[0.02,0.03,0.05,6],[0.02,0.03,0.05,8],[0.06,0.07,0.05,6],[0.09,0.1,0.05,10],[0.06,0.07,0.05,6],[0.09,0.1,0.05,10],[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+(1 row)
+
+SELECT sum(PC_NumPoints(pa)) FROM pa_test;
+ sum 
+-----
+   8
+(1 row)
+
+SELECT PC_AsText(PC_Range(pa, 1, 1)) FROM pa_test;
+               pc_astext               
+---------------------------------------
+ {"pcid":1,"pts":[[0.02,0.03,0.05,6]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6]]}
+(4 rows)
+
+CREATE TABLE IF NOT EXISTS pa_test_dim (
+    pa PCPATCH(3)
+);
+\d pa_test_dim
+   Table "public.pa_test_dim"
+ Column |    Type    | Modifiers 
+--------+------------+-----------
+ pa     | pcpatch(3) | 
+
+INSERT INTO pa_test_dim (pa) VALUES ('0000000003000000000000000200000002000000030000000500060000000200000003000000050008');
+INSERT INTO pa_test_dim (pa) VALUES ('000000000300000000000000020000000600000007000000050006000000090000000A00000005000A');
+INSERT INTO pa_test_dim (pa) VALUES ('0000000003000000000000000200000002000000030000000500060000000200000003000000050003');
+INSERT INTO pa_test_dim (pa) VALUES ('0000000003000000000000000200000002000000030000000500060000000200000003000000050001');
+SELECT Sum(PC_NumPoints(pa)) FROM pa_test_dim;
+ sum 
+-----
+   8
+(1 row)
+
+SELECT Sum(PC_MemSize(pa)) FROM pa_test_dim;
+ sum 
+-----
+ 668
+(1 row)
+
+SELECT Sum(PC_PatchMax(pa,'x')) FROM pa_test_dim;
+ sum  
+------
+ 0.15
+(1 row)
+
+SELECT Sum(PC_PatchMin(pa,'x')) FROM pa_test_dim;
+ sum  
+------
+ 0.12
+(1 row)
+
+DELETE FROM pa_test_dim;
+INSERT INTO pa_test_dim (pa)
+SELECT PC_Patch(PC_MakePoint(3, ARRAY[x,y,z,intensity]))
+FROM (
+ SELECT  
+ -127+a/100.0 AS x, 
+   45+a/100.0 AS y,
+        1.0*a AS z,
+         a/10 AS intensity,
+         a/400 AS gid
+ FROM generate_series(1,1600) AS a
+) AS values GROUP BY gid;
+SELECT Sum(PC_NumPoints(pa)) FROM pa_test_dim;
+ sum  
+------
+ 1600
+(1 row)
+
+SELECT Sum(PC_MemSize(pa)) FROM pa_test_dim;
+ sum  
+------
+ 8713
+(1 row)
+
+SELECT Max(PC_PatchMax(pa,'x')) FROM pa_test_dim;
+ max  
+------
+ -111
+(1 row)
+
+SELECT Min(PC_PatchMin(pa,'x')) FROM pa_test_dim;
+   min   
+---------
+ -126.99
+(1 row)
+
+SELECT Min(PC_PatchMin(pa,'z')) FROM pa_test_dim;
+ min 
+-----
+   1
+(1 row)
+
+-- https://github.com/pgpointcloud/pointcloud/issues/77
+SELECT PC_Get(PC_PatchMax(pa)) FROM pa_test_dim order by 1 limit 1;
+         pc_get         
+------------------------
+ {-123.01,48.99,399,39}
+(1 row)
+
+SELECT PC_Get(PC_PatchMin(pa)) FROM pa_test_dim order by 1 limit 1;
+       pc_get        
+---------------------
+ {-126.99,45.01,1,0}
+(1 row)
+
+SELECT PC_Get(PC_PatchAvg(pa)) FROM pa_test_dim order by 1 limit 1;
+      pc_get      
+------------------
+ {-125,47,200,20}
+(1 row)
+
+SELECT PC_Summary(pa) summary FROM pa_test_dim order by 1 limit 1;
+                                                                                                                                                                                                                                              summary                                                                                                                                                                                                                                               
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ {"pcid":3, "npts":1, "srid":0, "compr":"dimensional","dims":[{"pos":0,"name":"X","size":4,"type":"int32_t","compr":"zlib","stats":{"min":-111,"max":-111,"avg":-111}},{"pos":1,"name":"Y","size":4,"type":"int32_t","compr":"zlib","stats":{"min":61,"max":61,"avg":61}},{"pos":2,"name":"Z","size":4,"type":"int32_t","compr":"zlib","stats":{"min":1600,"max":1600,"avg":1600}},{"pos":3,"name":"Intensity","size":2,"type":"uint16_t","compr":"zlib","stats":{"min":160,"max":160,"avg":160}}]}
+(1 row)
+
+--DROP TABLE pts_collection;
+DROP TABLE pt_test;
+DROP TABLE pa_test;
+DROP TABLE pa_test_dim;
+-- See https://github.com/pgpointcloud/pointcloud/issues/44
+SELECT PC_AsText(PC_Patch(ARRAY[PC_MakePoint(3, ARRAY[-127, 45, 124.0, 4.0])]::pcpoint[]));
+             pc_astext              
+------------------------------------
+ {"pcid":3,"pts":[[-127,45,124,4]]}
+(1 row)
+
+SELECT 'pc_id1', PC_PCId(PC_Patch(PC_MakePoint(3, ARRAY[-1,-2,-3,-4])));
+ ?column? | pc_pcid 
+----------+---------
+ pc_id1   |       3
+(1 row)
+
+SELECT 'pc_id2', PC_PCId(PC_MakePoint(3, ARRAY[-1,-2,-3,-4]));
+ ?column? | pc_pcid 
+----------+---------
+ pc_id2   |       3
+(1 row)
+
+-- Test PC_Compress
+-- Also regression tests for
+-- https://github.com/pgpointcloud/pointcloud/issues/69
+WITH points AS (
+  SELECT ARRAY[
+    (2^08/256.0*v)*0.01,  -- int8_t
+   -(2^08/256.0*v)*0.01,  -- int8_t
+    (2^16/256.0*v)*0.01,  -- int16_t
+    (2^32/256.0*v)*0.01,  -- int32_t
+    (2^64/256.0*v)*0.01,  -- int64_t
+    (2^32/256.0*v)*0.01,  -- float
+    (2^64/256.0*v)*0.01   -- double
+  ] a, v/16 v
+  FROM generate_series(-127,127,4) v
+), p1 AS (
+  SELECT v, PC_Patch(PC_MakePoint(10, a)) p from points -- uncompressed
+  GROUP BY v
+)
+SELECT 'compr' test,
+  p1.v, compr, sc,
+  PC_AsText(p1.p) =
+  PC_AsText(PC_Compress(p1.p, compr,
+      array_to_string(
+        array_fill(sc,ARRAY[7]),
+        ','
+      )
+    )) ok
+FROM p1, ( values
+  ('dimensional','rle'),
+  ('dimensional','zlib'),
+  ('dimensional','sigbits'),
+  ('dimensional','auto')
+) dimcompr(compr,sc)
+ORDER BY compr,sc,v;
+ test  | v  |    compr    |   sc    | ok 
+-------+----+-------------+---------+----
+ compr | -7 | dimensional | auto    | t
+ compr | -6 | dimensional | auto    | t
+ compr | -5 | dimensional | auto    | t
+ compr | -4 | dimensional | auto    | t
+ compr | -3 | dimensional | auto    | t
+ compr | -2 | dimensional | auto    | t
+ compr | -1 | dimensional | auto    | t
+ compr |  0 | dimensional | auto    | t
+ compr |  1 | dimensional | auto    | t
+ compr |  2 | dimensional | auto    | t
+ compr |  3 | dimensional | auto    | t
+ compr |  4 | dimensional | auto    | t
+ compr |  5 | dimensional | auto    | t
+ compr |  6 | dimensional | auto    | t
+ compr |  7 | dimensional | auto    | t
+ compr | -7 | dimensional | rle     | t
+ compr | -6 | dimensional | rle     | t
+ compr | -5 | dimensional | rle     | t
+ compr | -4 | dimensional | rle     | t
+ compr | -3 | dimensional | rle     | t
+ compr | -2 | dimensional | rle     | t
+ compr | -1 | dimensional | rle     | t
+ compr |  0 | dimensional | rle     | t
+ compr |  1 | dimensional | rle     | t
+ compr |  2 | dimensional | rle     | t
+ compr |  3 | dimensional | rle     | t
+ compr |  4 | dimensional | rle     | t
+ compr |  5 | dimensional | rle     | t
+ compr |  6 | dimensional | rle     | t
+ compr |  7 | dimensional | rle     | t
+ compr | -7 | dimensional | sigbits | t
+ compr | -6 | dimensional | sigbits | t
+ compr | -5 | dimensional | sigbits | t
+ compr | -4 | dimensional | sigbits | t
+ compr | -3 | dimensional | sigbits | t
+ compr | -2 | dimensional | sigbits | t
+ compr | -1 | dimensional | sigbits | t
+ compr |  0 | dimensional | sigbits | t
+ compr |  1 | dimensional | sigbits | t
+ compr |  2 | dimensional | sigbits | t
+ compr |  3 | dimensional | sigbits | t
+ compr |  4 | dimensional | sigbits | t
+ compr |  5 | dimensional | sigbits | t
+ compr |  6 | dimensional | sigbits | t
+ compr |  7 | dimensional | sigbits | t
+ compr | -7 | dimensional | zlib    | t
+ compr | -6 | dimensional | zlib    | t
+ compr | -5 | dimensional | zlib    | t
+ compr | -4 | dimensional | zlib    | t
+ compr | -3 | dimensional | zlib    | t
+ compr | -2 | dimensional | zlib    | t
+ compr | -1 | dimensional | zlib    | t
+ compr |  0 | dimensional | zlib    | t
+ compr |  1 | dimensional | zlib    | t
+ compr |  2 | dimensional | zlib    | t
+ compr |  3 | dimensional | zlib    | t
+ compr |  4 | dimensional | zlib    | t
+ compr |  5 | dimensional | zlib    | t
+ compr |  6 | dimensional | zlib    | t
+ compr |  7 | dimensional | zlib    | t
+(60 rows)
+
+SELECT PC_Summary(PC_Compress(PC_Patch(PC_MakePoint(10,ARRAY[1,1,1,1,1,1,1])),
+  'dimensional'))::json->'compr';
+   ?column?    
+---------------
+ "dimensional"
+(1 row)
+
+-- https://github.com/pgpointcloud/pointcloud/issues/79
+SELECT '#79' issue,
+  PC_PatchMin(p,'x') x_min, PC_PatchMax(p,'x') x_max,
+  PC_PatchMin(p,'y') y_min, PC_PatchMax(p,'y') y_max,
+  PC_PatchMin(p,'z') z_min, PC_PatchMax(p,'z') z_max
+FROM ( SELECT
+  PC_FilterEquals(
+    PC_Patch( PC_MakePoint(20,ARRAY[-1,0,1]) ),
+    'y',0) p
+) foo;
+ issue | x_min | x_max | y_min | y_max | z_min | z_max 
+-------+-------+-------+-------+-------+-------+-------
+ #79   |    -1 |    -1 |     0 |     0 |     1 |     1
+(1 row)
+
+-- https://github.com/pgpointcloud/pointcloud/issues/78
+SELECT '#78' issue,
+  PC_PatchMin(p,'x') x_min, PC_PatchMax(p,'x') x_max,
+  PC_PatchMin(p,'y') y_min, PC_PatchMax(p,'y') y_max,
+  PC_PatchMin(p,'z') z_min, PC_PatchMax(p,'z') z_max,
+  PC_PatchMin(p,'intensity') i_min, PC_PatchMax(p,'intensity') i_max
+FROM ( SELECT
+  PC_FilterEquals(
+    PC_Patch( PC_MakePoint(3,ARRAY[-1,0,4862413,1]) ),
+    'y',0) p
+) foo;
+ issue | x_min | x_max | y_min | y_max |  z_min  |  z_max  | i_min | i_max 
+-------+-------+-------+-------+-------+---------+---------+-------+-------
+ #78   |    -1 |    -1 |     0 |     0 | 4862413 | 4862413 |     1 |     1
+(1 row)
+
+-- test for PC_BoundingDiagonalAsBinary
+SELECT PC_BoundingDiagonalAsBinary(
+	PC_Patch(ARRAY[
+		PC_MakePoint(1, ARRAY[0.,0.,0.,10.]),
+		PC_MakePoint(1, ARRAY[1.,1.,1.,10.]),
+		PC_MakePoint(1, ARRAY[10.,10.,10.,10.])]));
+                                             pc_boundingdiagonalasbinary                                              
+----------------------------------------------------------------------------------------------------------------------
+ \x010200008002000000000000000000000000000000000000000000000000000000000000000000244000000000000024400000000000002440
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 1 (same dimensions, same positions, same compressions)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 1)) t, PC_Summary(PC_SetPCId(p, 1))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                    t                    |   c    
+-----------------------------------------+--------
+ {"pcid":1,"pts":[[-1,0,4.86241e+06,1]]} | "none"
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 3 (same dimensions, same positions, different compressions)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+-- pcid 3: (X,Y,Z,I), scaled, dimensionally compressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 3)) t, PC_Summary(PC_SetPCId(p, 3))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                    t                    |       c       
+-----------------------------------------+---------------
+ {"pcid":3,"pts":[[-1,0,4.86241e+06,1]]} | "dimensional"
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 4 (different dimensions, different positions, same compressions)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+-- pcid 2: (I1,X,Y,Z,I2), scaled, uncompressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 4, 2.0)) t, PC_Summary(PC_SetPCId(p, 4, 2.0))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                     t                     |   c    
+-------------------------------------------+--------
+ {"pcid":4,"pts":[[2,-1,0,4.86241e+06,2]]} | "none"
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 10 (incompatible dimensions because of different interpretations)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+-- pcid 10: (X,Y,Z), unscaled, dimensionally compressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 10)) t, PC_Summary(PC_SetPCId(p, 10))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+ERROR:  dimension interpretations are not matching
+-- test PC_Transform
+SELECT
+  PC_AsText(PC_Transform(p, 10, 1.0)) t, PC_Summary(PC_Transform(p, 10, 1.0))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                  t                   |   c    
+--------------------------------------+--------
+ {"pcid":10,"pts":[[-1,0,1,1,1,1,1]]} | "none"
+(1 row)
+
+-- test PC_Patch from float8 array
+SELECT pc_astext(PC_MakePatch(1, ARRAY[-1,0,5,1, -1,0,6,1, -1,0,7,1]));
+                      pc_astext                      
+-----------------------------------------------------
+ {"pcid":1,"pts":[[-1,0,5,1],[-1,0,6,1],[-1,0,7,1]]}
+(1 row)
+
+TRUNCATE pointcloud_formats;
--- /dev/null
+++ b/pgsql/expected/pointcloud_1.out
@@ -0,0 +1,710 @@
+set client_min_messages to ERROR;
+SET extra_float_digits = 0;
+CREATE EXTENSION pointcloud;
+SELECT PC_Version();
+ pc_version 
+------------
+ 1.2.1
+(1 row)
+
+INSERT INTO pointcloud_formats (pcid, srid, schema)
+VALUES (1, 0, -- XYZI, scaled, uncompressed
+'<?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">none</Metadata>
+    <Metadata name="spatialreference" type="id">4326</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+),
+(3, 0, -- XYZI, scaled, dimensionally compressed
+'<?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">dimensional</Metadata>
+    <Metadata name="spatialreference" type="id">4326</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+)
+,(4, 0, -- (I1,X,Y,Z,I2), scaled, uncompressed
+'<?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>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>I1</pc:name>
+    <pc:interpretation>uint16_t</pc:interpretation>
+    <pc:scale>1</pc:scale>
+  </pc:dimension>
+  <pc:dimension>
+    <pc:position>2</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>3</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>4</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>5</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>I2</pc:name>
+    <pc:interpretation>uint16_t</pc:interpretation>
+    <pc:scale>1</pc:scale>
+  </pc:dimension>
+  <pc:metadata>
+    <Metadata name="compression">none</Metadata>
+    <Metadata name="spatialreference" type="id">4326</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+)
+,(10, 0, -- All (signed) interpretations, uncompressed
+'<?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:name>x</pc:name>
+    <pc:size>1</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>2</pc:position> <pc:name>y</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>3</pc:position> <pc:name>i2</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int16_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>4</pc:position> <pc:name>i4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>int32_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>5</pc:position> <pc:name>i8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>int64_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>6</pc:position> <pc:name>f4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>float</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>7</pc:position> <pc:name>f8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>double</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+</pc:PointCloudSchema>'
+)
+,(11, 0, -- All (signed) interpretations, dimensionally-compressed
+'<?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:name>x</pc:name>
+    <pc:size>1</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>2</pc:position> <pc:name>y</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int8_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>3</pc:position> <pc:name>i2</pc:name>
+    <pc:size>2</pc:size> <pc:interpretation>int16_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>4</pc:position> <pc:name>i4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>int32_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>5</pc:position> <pc:name>i8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>int64_t</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>6</pc:position> <pc:name>f4</pc:name>
+    <pc:size>4</pc:size> <pc:interpretation>float</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:dimension> <pc:position>7</pc:position> <pc:name>f8</pc:name>
+    <pc:size>8</pc:size> <pc:interpretation>double</pc:interpretation>
+    <pc:scale>0.01</pc:scale>
+  </pc:dimension>
+  <pc:metadata>
+    <Metadata name="compression">dimensional</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+),
+(20, 0, -- XYZ, unscaled, dimensionally compressed
+'<?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:name>X</pc:name>
+    <pc:interpretation>int32_t</pc:interpretation>
+  </pc:dimension>
+  <pc:dimension>
+    <pc:position>2</pc:position>
+    <pc:size>4</pc:size>
+    <pc:name>Y</pc:name>
+    <pc:interpretation>int32_t</pc:interpretation>
+  </pc:dimension>
+  <pc:dimension>
+    <pc:position>3</pc:position>
+    <pc:size>4</pc:size>
+    <pc:name>Z</pc:name>
+    <pc:interpretation>int32_t</pc:interpretation>
+  </pc:dimension>
+  <pc:metadata>
+    <Metadata name="compression">dimensional</Metadata>
+  </pc:metadata>
+</pc:PointCloudSchema>'
+)
+;
+CREATE TABLE IF NOT EXISTS pt_test (
+    pt PCPOINT(1)
+);
+\d pt_test
+                Table "public.pt_test"
+ Column |    Type    | Collation | Nullable | Default 
+--------+------------+-----------+----------+---------
+ pt     | pcpoint(1) |           |          | 
+
+DELETE FROM pt_test;
+INSERT INTO pt_test (pt) VALUES ('00000000020000000100000002000000030004');
+ERROR:  no entry in "pointcloud_formats" for pcid = 2
+LINE 1: INSERT INTO pt_test (pt) VALUES ('00000000020000000100000002...
+                                         ^
+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_Get(pt) FROM pt_test;
+       pc_get       
+--------------------
+ {0.01,0.02,0.03,4}
+ {0.02,0.03,0.03,5}
+ {0.03,0.04,0.03,6}
+(3 rows)
+
+SELECT PC_AsText(pt) FROM pt_test;
+             pc_astext              
+------------------------------------
+ {"pcid":1,"pt":[0.01,0.02,0.03,4]}
+ {"pcid":1,"pt":[0.02,0.03,0.03,5]}
+ {"pcid":1,"pt":[0.03,0.04,0.03,6]}
+(3 rows)
+
+SELECT PC_AsText(PC_Patch(pt)) FROM pt_test;
+                                  pc_astext                                  
+-----------------------------------------------------------------------------
+ {"pcid":1,"pts":[[0.01,0.02,0.03,4],[0.02,0.03,0.03,5],[0.03,0.04,0.03,6]]}
+(1 row)
+
+SELECT PC_AsText(PC_Explode(PC_Patch(pt))) FROM pt_test;
+             pc_astext              
+------------------------------------
+ {"pcid":1,"pt":[0.01,0.02,0.03,4]}
+ {"pcid":1,"pt":[0.02,0.03,0.03,5]}
+ {"pcid":1,"pt":[0.03,0.04,0.03,6]}
+(3 rows)
+
+SELECT Sum(PC_MemSize(pt)) FROM pt_test;
+ sum 
+-----
+  75
+(1 row)
+
+CREATE TABLE IF NOT EXISTS pa_test (
+    pa PCPATCH(1)
+);
+\d pa_test
+                Table "public.pa_test"
+ Column |    Type    | Collation | Nullable | Default 
+--------+------------+-----------+----------+---------
+ pa     | pcpatch(1) |           |          | 
+
+DELETE FROM pa_test;
+INSERT INTO pa_test (pa) VALUES ('0000000002000000000000000200000002000000030000000500060000000200000003000000050008');
+ERROR:  no entry in "pointcloud_formats" for pcid = 2
+LINE 1: INSERT INTO pa_test (pa) VALUES ('00000000020000000000000002...
+                                         ^
+INSERT INTO pa_test (pa) VALUES ('0000000001000000000000000200000002000000030000000500060000000200000003000000050008');
+INSERT INTO pa_test (pa) VALUES ('000000000100000000000000020000000600000007000000050006000000090000000A00000005000A');
+INSERT INTO pa_test (pa) VALUES ('000000000100000000000000020000000600000007000000050006000000090000000A00000005000A');
+INSERT INTO pa_test (pa) VALUES ('000000000100000000000000020000000600000007000000050006000000090000000A00000005000A');
+SELECT PC_Uncompress(pa) FROM pa_test LIMIT 1;
+                                   pc_uncompress                                    
+------------------------------------------------------------------------------------
+ 0101000000000000000200000002000000030000000500000006000200000003000000050000000800
+(1 row)
+
+SELECT PC_AsText(pa) FROM pa_test;
+                        pc_astext                         
+----------------------------------------------------------
+ {"pcid":1,"pts":[[0.02,0.03,0.05,6],[0.02,0.03,0.05,8]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+(4 rows)
+
+SELECT PC_EnvelopeAsBinary(pa) from pa_test;
+                                                                                     pc_envelopeasbinary                                                                                      
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ \x010300000001000000050000007b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+(4 rows)
+
+SELECT PC_Envelope(pa) from pa_test;
+                                                                                         pc_envelope                                                                                          
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ \x010300000001000000050000007b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f7b14ae47e17a943fb81e85eb51b89e3f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+ \x01030000000100000005000000b81e85eb51b8ae3fec51b81e85ebb13fb81e85eb51b8ae3f9a9999999999b93f0ad7a3703d0ab73f9a9999999999b93f0ad7a3703d0ab73fec51b81e85ebb13fb81e85eb51b8ae3fec51b81e85ebb13f
+(4 rows)
+
+SELECT PC_AsText(PC_Union(pa)) FROM pa_test;
+                                                                                 pc_astext                                                                                  
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ {"pcid":1,"pts":[[0.02,0.03,0.05,6],[0.02,0.03,0.05,8],[0.06,0.07,0.05,6],[0.09,0.1,0.05,10],[0.06,0.07,0.05,6],[0.09,0.1,0.05,10],[0.06,0.07,0.05,6],[0.09,0.1,0.05,10]]}
+(1 row)
+
+SELECT sum(PC_NumPoints(pa)) FROM pa_test;
+ sum 
+-----
+   8
+(1 row)
+
+SELECT PC_AsText(PC_Range(pa, 1, 1)) FROM pa_test;
+               pc_astext               
+---------------------------------------
+ {"pcid":1,"pts":[[0.02,0.03,0.05,6]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6]]}
+ {"pcid":1,"pts":[[0.06,0.07,0.05,6]]}
+(4 rows)
+
+CREATE TABLE IF NOT EXISTS pa_test_dim (
+    pa PCPATCH(3)
+);
+\d pa_test_dim
+              Table "public.pa_test_dim"
+ Column |    Type    | Collation | Nullable | Default 
+--------+------------+-----------+----------+---------
+ pa     | pcpatch(3) |           |          | 
+
+INSERT INTO pa_test_dim (pa) VALUES ('0000000003000000000000000200000002000000030000000500060000000200000003000000050008');
+INSERT INTO pa_test_dim (pa) VALUES ('000000000300000000000000020000000600000007000000050006000000090000000A00000005000A');
+INSERT INTO pa_test_dim (pa) VALUES ('0000000003000000000000000200000002000000030000000500060000000200000003000000050003');
+INSERT INTO pa_test_dim (pa) VALUES ('0000000003000000000000000200000002000000030000000500060000000200000003000000050001');
+SELECT Sum(PC_NumPoints(pa)) FROM pa_test_dim;
+ sum 
+-----
+   8
+(1 row)
+
+SELECT Sum(PC_MemSize(pa)) FROM pa_test_dim;
+ sum 
+-----
+ 668
+(1 row)
+
+SELECT Sum(PC_PatchMax(pa,'x')) FROM pa_test_dim;
+ sum  
+------
+ 0.15
+(1 row)
+
+SELECT Sum(PC_PatchMin(pa,'x')) FROM pa_test_dim;
+ sum  
+------
+ 0.12
+(1 row)
+
+DELETE FROM pa_test_dim;
+INSERT INTO pa_test_dim (pa)
+SELECT PC_Patch(PC_MakePoint(3, ARRAY[x,y,z,intensity]))
+FROM (
+ SELECT  
+ -127+a/100.0 AS x, 
+   45+a/100.0 AS y,
+        1.0*a AS z,
+         a/10 AS intensity,
+         a/400 AS gid
+ FROM generate_series(1,1600) AS a
+) AS values GROUP BY gid;
+SELECT Sum(PC_NumPoints(pa)) FROM pa_test_dim;
+ sum  
+------
+ 1600
+(1 row)
+
+SELECT Sum(PC_MemSize(pa)) FROM pa_test_dim;
+ sum  
+------
+ 8713
+(1 row)
+
+SELECT Max(PC_PatchMax(pa,'x')) FROM pa_test_dim;
+ max  
+------
+ -111
+(1 row)
+
+SELECT Min(PC_PatchMin(pa,'x')) FROM pa_test_dim;
+   min   
+---------
+ -126.99
+(1 row)
+
+SELECT Min(PC_PatchMin(pa,'z')) FROM pa_test_dim;
+ min 
+-----
+   1
+(1 row)
+
+-- https://github.com/pgpointcloud/pointcloud/issues/77
+SELECT PC_Get(PC_PatchMax(pa)) FROM pa_test_dim order by 1 limit 1;
+         pc_get         
+------------------------
+ {-123.01,48.99,399,39}
+(1 row)
+
+SELECT PC_Get(PC_PatchMin(pa)) FROM pa_test_dim order by 1 limit 1;
+       pc_get        
+---------------------
+ {-126.99,45.01,1,0}
+(1 row)
+
+SELECT PC_Get(PC_PatchAvg(pa)) FROM pa_test_dim order by 1 limit 1;
+      pc_get      
+------------------
+ {-125,47,200,20}
+(1 row)
+
+SELECT PC_Summary(pa) summary FROM pa_test_dim order by 1 limit 1;
+                                                                                                                                                                                                                                              summary                                                                                                                                                                                                                                               
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ {"pcid":3, "npts":1, "srid":0, "compr":"dimensional","dims":[{"pos":0,"name":"X","size":4,"type":"int32_t","compr":"zlib","stats":{"min":-111,"max":-111,"avg":-111}},{"pos":1,"name":"Y","size":4,"type":"int32_t","compr":"zlib","stats":{"min":61,"max":61,"avg":61}},{"pos":2,"name":"Z","size":4,"type":"int32_t","compr":"zlib","stats":{"min":1600,"max":1600,"avg":1600}},{"pos":3,"name":"Intensity","size":2,"type":"uint16_t","compr":"zlib","stats":{"min":160,"max":160,"avg":160}}]}
+(1 row)
+
+--DROP TABLE pts_collection;
+DROP TABLE pt_test;
+DROP TABLE pa_test;
+DROP TABLE pa_test_dim;
+-- See https://github.com/pgpointcloud/pointcloud/issues/44
+SELECT PC_AsText(PC_Patch(ARRAY[PC_MakePoint(3, ARRAY[-127, 45, 124.0, 4.0])]::pcpoint[]));
+             pc_astext              
+------------------------------------
+ {"pcid":3,"pts":[[-127,45,124,4]]}
+(1 row)
+
+SELECT 'pc_id1', PC_PCId(PC_Patch(PC_MakePoint(3, ARRAY[-1,-2,-3,-4])));
+ ?column? | pc_pcid 
+----------+---------
+ pc_id1   |       3
+(1 row)
+
+SELECT 'pc_id2', PC_PCId(PC_MakePoint(3, ARRAY[-1,-2,-3,-4]));
+ ?column? | pc_pcid 
+----------+---------
+ pc_id2   |       3
+(1 row)
+
+-- Test PC_Compress
+-- Also regression tests for
+-- https://github.com/pgpointcloud/pointcloud/issues/69
+WITH points AS (
+  SELECT ARRAY[
+    (2^08/256.0*v)*0.01,  -- int8_t
+   -(2^08/256.0*v)*0.01,  -- int8_t
+    (2^16/256.0*v)*0.01,  -- int16_t
+    (2^32/256.0*v)*0.01,  -- int32_t
+    (2^64/256.0*v)*0.01,  -- int64_t
+    (2^32/256.0*v)*0.01,  -- float
+    (2^64/256.0*v)*0.01   -- double
+  ] a, v/16 v
+  FROM generate_series(-127,127,4) v
+), p1 AS (
+  SELECT v, PC_Patch(PC_MakePoint(10, a)) p from points -- uncompressed
+  GROUP BY v
+)
+SELECT 'compr' test,
+  p1.v, compr, sc,
+  PC_AsText(p1.p) =
+  PC_AsText(PC_Compress(p1.p, compr,
+      array_to_string(
+        array_fill(sc,ARRAY[7]),
+        ','
+      )
+    )) ok
+FROM p1, ( values
+  ('dimensional','rle'),
+  ('dimensional','zlib'),
+  ('dimensional','sigbits'),
+  ('dimensional','auto')
+) dimcompr(compr,sc)
+ORDER BY compr,sc,v;
+ test  | v  |    compr    |   sc    | ok 
+-------+----+-------------+---------+----
+ compr | -7 | dimensional | auto    | t
+ compr | -6 | dimensional | auto    | t
+ compr | -5 | dimensional | auto    | t
+ compr | -4 | dimensional | auto    | t
+ compr | -3 | dimensional | auto    | t
+ compr | -2 | dimensional | auto    | t
+ compr | -1 | dimensional | auto    | t
+ compr |  0 | dimensional | auto    | t
+ compr |  1 | dimensional | auto    | t
+ compr |  2 | dimensional | auto    | t
+ compr |  3 | dimensional | auto    | t
+ compr |  4 | dimensional | auto    | t
+ compr |  5 | dimensional | auto    | t
+ compr |  6 | dimensional | auto    | t
+ compr |  7 | dimensional | auto    | t
+ compr | -7 | dimensional | rle     | t
+ compr | -6 | dimensional | rle     | t
+ compr | -5 | dimensional | rle     | t
+ compr | -4 | dimensional | rle     | t
+ compr | -3 | dimensional | rle     | t
+ compr | -2 | dimensional | rle     | t
+ compr | -1 | dimensional | rle     | t
+ compr |  0 | dimensional | rle     | t
+ compr |  1 | dimensional | rle     | t
+ compr |  2 | dimensional | rle     | t
+ compr |  3 | dimensional | rle     | t
+ compr |  4 | dimensional | rle     | t
+ compr |  5 | dimensional | rle     | t
+ compr |  6 | dimensional | rle     | t
+ compr |  7 | dimensional | rle     | t
+ compr | -7 | dimensional | sigbits | t
+ compr | -6 | dimensional | sigbits | t
+ compr | -5 | dimensional | sigbits | t
+ compr | -4 | dimensional | sigbits | t
+ compr | -3 | dimensional | sigbits | t
+ compr | -2 | dimensional | sigbits | t
+ compr | -1 | dimensional | sigbits | t
+ compr |  0 | dimensional | sigbits | t
+ compr |  1 | dimensional | sigbits | t
+ compr |  2 | dimensional | sigbits | t
+ compr |  3 | dimensional | sigbits | t
+ compr |  4 | dimensional | sigbits | t
+ compr |  5 | dimensional | sigbits | t
+ compr |  6 | dimensional | sigbits | t
+ compr |  7 | dimensional | sigbits | t
+ compr | -7 | dimensional | zlib    | t
+ compr | -6 | dimensional | zlib    | t
+ compr | -5 | dimensional | zlib    | t
+ compr | -4 | dimensional | zlib    | t
+ compr | -3 | dimensional | zlib    | t
+ compr | -2 | dimensional | zlib    | t
+ compr | -1 | dimensional | zlib    | t
+ compr |  0 | dimensional | zlib    | t
+ compr |  1 | dimensional | zlib    | t
+ compr |  2 | dimensional | zlib    | t
+ compr |  3 | dimensional | zlib    | t
+ compr |  4 | dimensional | zlib    | t
+ compr |  5 | dimensional | zlib    | t
+ compr |  6 | dimensional | zlib    | t
+ compr |  7 | dimensional | zlib    | t
+(60 rows)
+
+SELECT PC_Summary(PC_Compress(PC_Patch(PC_MakePoint(10,ARRAY[1,1,1,1,1,1,1])),
+  'dimensional'))::json->'compr';
+   ?column?    
+---------------
+ "dimensional"
+(1 row)
+
+-- https://github.com/pgpointcloud/pointcloud/issues/79
+SELECT '#79' issue,
+  PC_PatchMin(p,'x') x_min, PC_PatchMax(p,'x') x_max,
+  PC_PatchMin(p,'y') y_min, PC_PatchMax(p,'y') y_max,
+  PC_PatchMin(p,'z') z_min, PC_PatchMax(p,'z') z_max
+FROM ( SELECT
+  PC_FilterEquals(
+    PC_Patch( PC_MakePoint(20,ARRAY[-1,0,1]) ),
+    'y',0) p
+) foo;
+ issue | x_min | x_max | y_min | y_max | z_min | z_max 
+-------+-------+-------+-------+-------+-------+-------
+ #79   |    -1 |    -1 |     0 |     0 |     1 |     1
+(1 row)
+
+-- https://github.com/pgpointcloud/pointcloud/issues/78
+SELECT '#78' issue,
+  PC_PatchMin(p,'x') x_min, PC_PatchMax(p,'x') x_max,
+  PC_PatchMin(p,'y') y_min, PC_PatchMax(p,'y') y_max,
+  PC_PatchMin(p,'z') z_min, PC_PatchMax(p,'z') z_max,
+  PC_PatchMin(p,'intensity') i_min, PC_PatchMax(p,'intensity') i_max
+FROM ( SELECT
+  PC_FilterEquals(
+    PC_Patch( PC_MakePoint(3,ARRAY[-1,0,4862413,1]) ),
+    'y',0) p
+) foo;
+ issue | x_min | x_max | y_min | y_max |  z_min  |  z_max  | i_min | i_max 
+-------+-------+-------+-------+-------+---------+---------+-------+-------
+ #78   |    -1 |    -1 |     0 |     0 | 4862413 | 4862413 |     1 |     1
+(1 row)
+
+-- test for PC_BoundingDiagonalAsBinary
+SELECT PC_BoundingDiagonalAsBinary(
+	PC_Patch(ARRAY[
+		PC_MakePoint(1, ARRAY[0.,0.,0.,10.]),
+		PC_MakePoint(1, ARRAY[1.,1.,1.,10.]),
+		PC_MakePoint(1, ARRAY[10.,10.,10.,10.])]));
+                                             pc_boundingdiagonalasbinary                                              
+----------------------------------------------------------------------------------------------------------------------
+ \x010200008002000000000000000000000000000000000000000000000000000000000000000000244000000000000024400000000000002440
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 1 (same dimensions, same positions, same compressions)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 1)) t, PC_Summary(PC_SetPCId(p, 1))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                    t                    |   c    
+-----------------------------------------+--------
+ {"pcid":1,"pts":[[-1,0,4.86241e+06,1]]} | "none"
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 3 (same dimensions, same positions, different compressions)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+-- pcid 3: (X,Y,Z,I), scaled, dimensionally compressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 3)) t, PC_Summary(PC_SetPCId(p, 3))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                    t                    |       c       
+-----------------------------------------+---------------
+ {"pcid":3,"pts":[[-1,0,4.86241e+06,1]]} | "dimensional"
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 4 (different dimensions, different positions, same compressions)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+-- pcid 2: (I1,X,Y,Z,I2), scaled, uncompressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 4, 2.0)) t, PC_Summary(PC_SetPCId(p, 4, 2.0))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                     t                     |   c    
+-------------------------------------------+--------
+ {"pcid":4,"pts":[[2,-1,0,4.86241e+06,2]]} | "none"
+(1 row)
+
+-- test PC_SetPCId
+-- from pcid 1 to 10 (incompatible dimensions because of different interpretations)
+-- pcid 1: (X,Y,Z,I), scaled, uncompressed
+-- pcid 10: (X,Y,Z), unscaled, dimensionally compressed
+SELECT
+  PC_AsText(PC_SetPCId(p, 10)) t, PC_Summary(PC_SetPCId(p, 10))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+ERROR:  dimension interpretations are not matching
+-- test PC_Transform
+SELECT
+  PC_AsText(PC_Transform(p, 10, 1.0)) t, PC_Summary(PC_Transform(p, 10, 1.0))::json->'compr' c
+FROM ( SELECT PC_Patch(PC_MakePoint(1, ARRAY[-1,0,4862413,1])) p ) foo;
+                  t                   |   c    
+--------------------------------------+--------
+ {"pcid":10,"pts":[[-1,0,1,1,1,1,1]]} | "none"
+(1 row)
+
+-- test PC_Patch from float8 array
+SELECT pc_astext(PC_MakePatch(1, ARRAY[-1,0,5,1, -1,0,6,1, -1,0,7,1]));
+                      pc_astext                      
+-----------------------------------------------------
+ {"pcid":1,"pts":[[-1,0,5,1],[-1,0,6,1],[-1,0,7,1]]}
+(1 row)
+
+TRUNCATE pointcloud_formats;
