[pdal] coordinate precision pgpointcloud writer?

[Ashley Mort]

Can someone please help me figure out why I am losing coordinate 
precision when I use pdal's pgpoingcloud.writer to write into my 
Postgres DB?

I have a .las file in epsg:4326 and when I put it though my pdal 
pipeline, I seem to lose precision (-122.1831470 will become -112.183) 
when I query for it.

Below is a sample point from my .las file, the output I get from 
querying postgres, and the pipeline file that I used.  Can anyone point 
out what I'm doing wrong?  Thanks!


postgres at ubuntu:/home/stack/Downloads$ pdal info st2-helens.las -p 5
{
     "X": "-122.18314700000002",
     "Y": "46.238651000000004",
     "Z": "1161.8700000000001",
     "Intensity": "0",
     "ReturnNumber": "0",
     "NumberOfReturns": "0",
     "ScanDirectionFlag": "0",
     "EdgeOfFlightLine": "0",
     "Classification": "2",
     "ScanAngleRank": "0",
     "UserData": "0",
     "PointSourceId": "20",
     "Time": "0",
     "Red": "205",
     "Green": "205",
     "Blue": "185"
}

lidarimport=# select PC_AsText(PC_Explode(pa)) from sthelens4326 limit 10;
                                          pc_astext
  {"pcid":3,"pt":[-122.211,46.1886,1874.3,0,0,0,0,0,1,0,0,12,0,242,242,238,1.1605
3e+007,0]}
  {"pcid":3,"pt":[-122.211,46.1886,1874.3,0,0,0,0,0,2,0,0,21,0,242,242,238,7.4041
5e+006,0]}

<?xml version="1.0" encoding="UTF-8"?>
<Pipeline version="1.0">
   <Writer type="drivers.pgpointcloud.writer">
     <Option name="connection">dbname='lidar' user='postgres' 
password='password'</Option>
     <Option name="table">StHelens4326</Option>
     <Option name="srid">4326</Option>
     <Filter type="filters.chipper">
       <Option name="capacity">400</Option>
       <Filter type="filters.cache">
         <Reader type="drivers.las.reader">
           <Option name="filename">st2-helens.las</Option>
           <Option name="spatialreference">EPSG:4326</Option>
         </Reader>
       </Filter>
     </Filter>
   </Writer>
</Pipeline>

-- 
Ashley Mort
Sr. Software Engineer
Raytheon - Intelligence and Information Systems
972-205-5165 (office)
814-571-3039 (cell)