Hi Rémi, Thanks for the reply and information. I’m afraid I inherited this database and don’t know much about it (or pointcloud).
Looking into though, I doubt it’s compressed, we extract the data with: 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 so using pc_get rather than pc_uncompress. 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. Cheers, Jonathan From: postgis-users-boun...@lists.osgeo.org [mailto:postgis-users-boun...@lists.osgeo.org] On Behalf Of Rémi Cura Sent: Thursday, March 26, 2015 5:33 PM To: PostGIS Users Discussion Subject: Re: [postgis-users] 2.1.6 Released Hey, if you use the compression of patch and sensible xml schema, you should already have a 1:2 to 1:4 compression of the point size. (compared to binary ply in my case) Cheers, Rémi-C 2015-03-26 18:05 GMT+01:00 Jonathan Moules <j.mou...@hrwallingford.com<mailto:j.mou...@hrwallingford.com>>: Hi Paul, 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? Thanks, Jonathan From: postgis-users-boun...@lists.osgeo.org<mailto:postgis-users-boun...@lists.osgeo.org> [mailto:postgis-users-boun...@lists.osgeo.org<mailto:postgis-users-boun...@lists.osgeo.org>] On Behalf Of Paul Ramsey Sent: Friday, March 20, 2015 5:45 PM To: PostGIS Users Discussion Subject: [postgis-users] 2.1.6 Released The 2.1.6 release of PostGIS is now available<http://download.osgeo.org/postgis/source/postgis-2.1.6.tar.gz>. 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. http://download.osgeo.org/postgis/source/postgis-2.1.6.tar.gz Enhancements • #3000, Ensure edge splitting and healing algorithms use indexes • #3048, Speed up geometry simplification (J.Santana @ CartoDB) • #3050, Speep up geometry type reading (J.Santana @ CartoDB) Bug Fixes • #2941, allow geography columns with SRID other than 4326 • #3069, small objects getting inappropriately fluffed up w/ boxes • #3068, Have postgis_typmod_dims return NULL for unconstrained dims • #3061, Allow duplicate points in JSON, GML, GML ST_GeomFrom* functions • #3058, Fix ND-GiST picksplit method to split on the best plane • #3052, Make operators <-> and <#> available for PostgreSQL < 9.1 • #3045, Fix dimensionality confusion in &&& operator • #3016, Allow unregistering layers of corrupted topologies • #3015, Avoid exceptions from TopologySummary • #3020, ST_AddBand out-db bug where height using width value • #3031, Allow restore of Geometry(Point) tables dumped with empties in them View all closed tickets<http://trac.osgeo.org/postgis/query?status=closed&groupdesc=1&group=priority&milestone=PostGIS+2.1.6&order=priority>. -- Paul Ramsey http://cleverelephant.ca http://postgis.net This message has been scanned for viruses by MailControl<http://www.mailcontrol.com/>, a service from BlackSpider Technology Click here<https://www.mailcontrol.com/sr/MZbqvYs5QwJvpeaetUwhCQ==> to report this email as spam. ________________________________ HR Wallingford and its subsidiaries uses faxes and emails for confidential and legally privileged business communications. They do not of themselves create legal commitments. Disclosure to parties other than addressees requires our specific consent. We are not liable for unauthorised disclosures nor reliance upon them. If you have received this message in error please advise us immediately and destroy all copies of it. HR Wallingford Limited Howbery Park, Wallingford, Oxfordshire, OX10 8BA, United Kingdom Registered in England No. 02562099 ________________________________ _______________________________________________ postgis-users mailing list postgis-users@lists.osgeo.org<mailto:postgis-users@lists.osgeo.org> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users ________________________________ HR Wallingford and its subsidiaries uses faxes and emails for confidential and legally privileged business communications. They do not of themselves create legal commitments. Disclosure to parties other than addressees requires our specific consent. We are not liable for unauthorised disclosures nor reliance upon them. If you have received this message in error please advise us immediately and destroy all copies of it. HR Wallingford Limited Howbery Park, Wallingford, Oxfordshire, OX10 8BA, United Kingdom Registered in England No. 02562099 ________________________________
_______________________________________________ postgis-users mailing list postgis-users@lists.osgeo.org http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users
