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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Hi</span>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Rémi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Thanks for the reply and information.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">I’m afraid I inherited this database and don’t know much about it (or pointcloud).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Looking into though, I doubt it’s compressed, we extract the data with:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">select block_id , pc_get(pc_explode(pa), 'X') as x, pc_get(pc_explode(pa), 'Y') as y, pc_get(pc_explode(pa), 'Z') as z from xyz_patches<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">so using pc_get rather than pc_uncompress.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">On the other hand, there are 6 entries in pointcloud_formats which all have the “<Metadata name="compression">dimensional</Metadata>” line set. But I can’t decipher
the documentation well enough to know if the data actually uses it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Jonathan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> postgis-users-bounces@lists.osgeo.org [mailto:postgis-users-bounces@lists.osgeo.org]
<b>On Behalf Of </b>Rémi Cura<br>
<b>Sent:</b> Thursday, March 26, 2015 5:33 PM<br>
<b>To:</b> PostGIS Users Discussion<br>
<b>Subject:</b> Re: [postgis-users] 2.1.6 Released<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hey,<o:p></o:p></p>
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<p class="MsoNormal">if you use the compression of patch and sensible xml schema,
<br>
you should already have a 1:2 to 1:4 compression of the point size.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">(compared to binary ply in my case)<o:p></o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal">Rémi-C<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">2015-03-26 18:05 GMT+01:00 Jonathan Moules <<a href="mailto:J.Moules@hrwallingford.com" target="_blank">J.Moules@hrwallingford.com</a>>:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Hi Paul,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">I suspect I know the answer to this (“no”), but to confirm, is the disk saving for points going to
apply to points stored using the pointcloud extension in a postgis database?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Jonathan</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:postgis-users-bounces@lists.osgeo.org" target="_blank">postgis-users-bounces@lists.osgeo.org</a> [mailto:<a href="mailto:postgis-users-bounces@lists.osgeo.org" target="_blank">postgis-users-bounces@lists.osgeo.org</a>]
<b>On Behalf Of </b>Paul Ramsey<br>
<b>Sent:</b> Friday, March 20, 2015 5:45 PM<br>
<b>To:</b> PostGIS Users Discussion<br>
<b>Subject:</b> [postgis-users] 2.1.6 Released</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p style="margin:0cm;margin-bottom:.0001pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:11.0pt;font-family:"Helvetica","sans-serif";color:#222222">The 2.1.6 release of PostGIS is <a href="http://download.osgeo.org/postgis/source/postgis-2.1.6.tar.gz" target="_blank"><span style="font-family:"inherit","serif";color:#0066CC;border:none windowtext 1.0pt;padding:0cm">now
available</span></a>.</span><o:p></o:p></p>
<p style="margin-bottom:10.8pt;line-height:16.5pt;vertical-align:baseline;font-stretch:inherit">
<span style="font-size:11.0pt;font-family:"Helvetica","sans-serif";color:#222222">The PostGIS development team is happy to release patch for PostGIS 2.1, the 2.1.6 release. As befits a patch release, the focus is on bugs, breakages, and performance issues.
Users with large tables of points will want to priorize this patch, for substantial (~50%) disk space savings.</span><o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt;line-height:16.5pt;vertical-align:baseline;font-stretch:inherit">
<span style="font-size:11.0pt;font-family:"Helvetica","sans-serif";color:#222222"><a href="http://download.osgeo.org/postgis/source/postgis-2.1.6.tar.gz" target="_blank"><span style="font-family:"inherit","serif";color:#0066CC;border:none windowtext 1.0pt;padding:0cm">http://download.osgeo.org/postgis/source/postgis-2.1.6.tar.gz</span></a></span><o:p></o:p></p>
<p style="margin-bottom:10.8pt;line-height:16.5pt;vertical-align:baseline;font-stretch:inherit">
<strong><span style="font-size:11.0pt;font-family:"Helvetica","sans-serif";color:#222222">Enhancements</span></strong><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3000, Ensure edge splitting and healing algorithms use indexes</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3048, Speed up geometry simplification (J.Santana @ CartoDB)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3050, Speep up geometry type reading (J.Santana @ CartoDB)</span><o:p></o:p></p>
<p style="margin-bottom:10.8pt;line-height:16.5pt;vertical-align:baseline;font-stretch:inherit">
<strong><span style="font-size:11.0pt;font-family:"Helvetica","sans-serif";color:#222222">Bug Fixes</span></strong><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#2941, allow geography columns with SRID other than 4326</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3069, small objects getting inappropriately fluffed up w/ boxes</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3068, Have postgis_typmod_dims return NULL for unconstrained dims</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3061, Allow duplicate points in JSON, GML, GML ST_GeomFrom* functions</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3058, Fix ND-GiST picksplit method to split on the best plane</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3052, Make operators <-> and <#> available for PostgreSQL < 9.1</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3045, Fix dimensionality confusion in &&& operator</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3016, Allow unregistering layers of corrupted topologies</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3015, Avoid exceptions from TopologySummary</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3020, ST_AddBand out-db bug where height using width value</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:18.0pt;line-height:16.5pt;vertical-align:baseline">
<span style="font-size:10.0pt;font-family:Symbol;color:#222222">·</span><span style="font-size:7.0pt;color:#222222">
</span><span style="font-size:11.0pt;font-family:"inherit","serif";color:#222222">#3031, Allow restore of Geometry(Point) tables dumped with empties in them</span><o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt;line-height:16.5pt;vertical-align:baseline;font-stretch:inherit">
<span style="font-size:11.0pt;font-family:"Helvetica","sans-serif";color:#222222">View all <a href="http://trac.osgeo.org/postgis/query?status=closed&groupdesc=1&group=priority&milestone=PostGIS+2.1.6&order=priority" target="_blank"><span style="font-family:"inherit","serif";color:#0066CC;border:none windowtext 1.0pt;padding:0cm">closed
tickets</span></a>.</span><o:p></o:p></p>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif"">-- <br>
Paul Ramsey<br>
<a href="http://cleverelephant.ca" target="_blank">http://cleverelephant.ca</a></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif""><a href="http://postgis.net" target="_blank">http://postgis.net</a>
</span><o:p></o:p></p>
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