<div dir="ltr">Hi, Regina,<div><br></div><div>There are a number of geospatial libraries available in Azure. In terms of 3D capability, are they all lagging behind PostGIS?</div><div><br></div><div>Regards,</div><div><br></div><div>David</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 11 Oct 2022 at 04:37, Regina Obe <<a href="mailto:lr@pcorp.us">lr@pcorp.us</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg2040075070821562247"><div lang="EN-US"><div class="m_2040075070821562247WordSection1"><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">At a glance it sounds about right.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Much of the 3D PostGIS functionality is built in or implemented in SFCGAL.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">It looks like Spark utilizes JTS (of which GEOS is a fork of, which is what PostGIS uses for almost all the 2D processing).<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">So I would expect the functionality to be limited to what you see in JTS/GEOS. Both JTS and GEOS are picking up steam in the 3D arena, so I expect this story to change in the next year or so.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p><div style="border-top:none;border-right:none;border-bottom:none;border-left:1.5pt solid blue;padding:0in 0in 0in 4pt"><div><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in"><p class="MsoNormal"><b><span style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span style="font-size:11pt;font-family:Calibri,sans-serif"> postgis-users [mailto:<a href="mailto:postgis-users-bounces@lists.osgeo.org" target="_blank">postgis-users-bounces@lists.osgeo.org</a>] <b>On Behalf Of </b>Shaozhong SHI<br><b>Sent:</b> Monday, October 10, 2022 7:44 AM<br><b>To:</b> PostGIS Users Discussion <<a href="mailto:postgis-users@lists.osgeo.org" target="_blank">postgis-users@lists.osgeo.org</a>><br><b>Subject:</b> [postgis-users] geospatial functions on Databricks appear to lag behind PostGIS?<u></u><u></u></span></p></div></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">It appears that geospatial functions on databricks lag behind PostGIS.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">It appears that there is no 3d geometric operations such as ST_3DIntersects.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><a href="https://www.geomesa.org/documentation/stable/user/spark/sparksql_functions.html" target="_blank">11.6. SparkSQL Functions — GeoMesa 3.4.0 Manuals</a><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Is that right?<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Regards,<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">David<u></u><u></u></p></div></div></div></div></div>_______________________________________________<br>
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