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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Lars,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Have you tried using LATERAL for this. This seems like an example just dying for that to be used.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>For example<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>SELECT PC_Get(pae, 'X') AS X, PC_Get(pae, 'Y') AS Y, PC_GET(pae, 'Z') As Z <o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>FROM import , LATERAL PC_Explode(import.pa) AS pae<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>WHERE PC_Intersects(...);<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> pgpointcloud [mailto:pgpointcloud-bounces@lists.osgeo.org] <b>On Behalf Of </b>Lars<br><b>Sent:</b> Tuesday, May 08, 2018 5:32 AM<br><b>To:</b> pgpointcloud@lists.osgeo.org<br><b>Subject:</b> [pgpointcloud] PC_Get array of dimensions<o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>Hello,<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>Does pgpointcloud have any plans to add a generic PC_Get function that accepts an array of input names? There was a discussion on the subject a while back but cannot see any new function. <a href="http://lists.osgeo.org/pipermail/pdal/2014-November/000429.html">http://lists.osgeo.org/pipermail/pdal/2014-November/000429.html</a><o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>The suggested function would make the query more compact and easier to read. Could it also improve performance? <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>A simple query without PC_Get/PC_Explode takes 1 ms.<o:p></o:p></span></p></div><div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>select id from import where PC_Intersects(...);<o:p></o:p></span></p></div></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>Updating the test to include X value and the time increases to 21 ms.<o:p></o:p></span></p></div><div><div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>select PC_Get(PC_Explode(pa), 'X') from import where PC_Intersects(...);<o:p></o:p></span></p></div></div></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>Updating the test to include X and Y and it takes 34ms.<o:p></o:p></span></p></div><div><div><div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>select PC_Get(PC_Explode(pa), 'X'), PC_Get(PC_Explode(pa), 'Y') from import where PC_Intersects(...);<o:p></o:p></span></p></div></div></div></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>Updating the test to include X,Y and Z and it takes 46ms.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>select PC_Get(PC_Explode(pa), 'X'), PC_Get(PC_Explode(pa), 'Y'), PC_Get(PC_Explode(pa), 'Z') from import where PC_Intersects(...);<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>It appear that for each dimension added the time increase quiet a bit. This is obviously a very simple test but just wanted to get a feedback.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>Using Windows 7, PostgresSQL 10.3 and PostGIS 2.4.4<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Calibri",sans-serif;color:black'>kind regards, Lars<o:p></o:p></span></p></div></div></body></html>