<div dir="ltr">Sufficiently chastised. Based on Regina's comments, I might have a use case for it.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 24, 2021 at 3:10 PM 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 lang="EN-US"><div class="gmail-m_-1874388427564558746WordSection1"><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">As mentioned on IRC just reiterated here. <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)">I would like to see ST_AsFlatGeoBuf in there. Here are my reasons.<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)">1) To Bruce’s point that sure ogr_fdw can read it, I’m more interested in the writing of it (which at least I can’t do from scratch with ogr_fdw) and getting out of the database onto the command line is not one of my great ambitions in life.<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)">2) The fact it is a lighter weight format than ST_AsGeoJSON which has the same 1GB limitation.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Or as mentioned <a href="https://flatgeobuf.org/" target="_blank">https://flatgeobuf.org/</a> a better shapefile format (for < 1GB)<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">And the fact that FlatGeobuf is about 50% lighter than GeoJSON <u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">From site:<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> (shapefile 1, FlatGeoBuf 0.77, GeoJSON 1.2)<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)">Means I can stuff much more data in the 1GB limit than I can in GeoJSON.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Though not sure about how that places with the other attribute data if they are compacted as efficiently.<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)">3) Given it is demonstrated it can work fine with leaflet and openlayers means it is possible to hook it into something like <u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><a href="https://github.com/CrunchyData/pg_featureserv" target="_blank">https://github.com/CrunchyData/pg_featureserv</a> <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)">as an alternative format to geojson (not saying you should Martin Davis – just throwing it out there </span><span style="font-size:11pt;font-family:Wingdings;color:rgb(31,73,125)">J</span><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)"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">4) One more reason to fight that 1GB limit – as postgis raster is impacted by that too.<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)"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Thanks,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Regina<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>Björn Harrtell<br><b>Sent:</b> Wednesday, November 24, 2021 5:26 PM<br><b>To:</b> PostGIS Development Discussion <<a href="mailto:postgis-devel@lists.osgeo.org" target="_blank">postgis-devel@lists.osgeo.org</a>><br><b>Cc:</b> PostGIS Users Discussion <<a href="mailto:postgis-users@lists.osgeo.org" target="_blank">postgis-users@lists.osgeo.org</a>><br><b>Subject:</b> Re: [postgis-users] [postgis-devel] PSC Vote: Keep or drop Flatgeobuf in PostGIS 3.2.0<u></u><u></u></span></p></div></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">Even though I spent quite a bit of effort on implementing this stuff and I'm sure I can fix the crashers I agree with the arguments to remove it. That is, 1GB limit is really bad and better to use GDAL which has a well maintained impl of it.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">If there was a way to stream in and out binary with custom encoding and no size limit (i.e COPY with custom/ext binary format) it could make sense but I don't think that is going to happen any time soon.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Oh well, it was fun. Some of it. <span style="font-family:"Segoe UI Symbol",sans-serif">😂</span><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">PS. ST_AsGeobuf should be deprecated/removed too - it's even less useful IMHO.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">PS2. I do still believe in FlatGeobuf and it is used in production. ;)<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal" style="margin-bottom:12pt">/Björn<u></u><u></u></p><div><div><p class="MsoNormal">Den ons 24 nov. 2021 22:26Bruce Rindahl <<a href="mailto:bruce.rindahl@gmail.com" target="_blank">bruce.rindahl@gmail.com</a>> skrev:<u></u><u></u></p></div><blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in"><div><p class="MsoNormal">FWIW I say remove it and seriously think about not including it at all. Looks like you can use the format right now via ogr_fdw using GDAL. <u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">On Wed, Nov 24, 2021 at 12:51 PM Regina Obe <<a href="mailto:lr@pcorp.us" target="_blank">lr@pcorp.us</a>> wrote:<u></u><u></u></p></div><blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in"><div><div><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">FWIW it’s already in GDAL since 3.1 and yah GDAL is a better home since it doesn’t have the 1GB PostgreSQL limitation</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><a href="https://gdal.org/drivers/vector/flatgeobuf.html" target="_blank">https://gdal.org/drivers/vector/flatgeobuf.html</a></span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Also here are OpenLayers and Leaflet examples for those not familiar with the format</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">OpenLayers: <a href="https://flatgeobuf.org/examples/openlayers/" target="_blank">https://flatgeobuf.org/examples/openlayers/</a></span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Leaflet: <a href="https://flatgeobuf.org/examples/leaflet/" target="_blank">https://flatgeobuf.org/examples/leaflet/</a></span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Thanks,</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Regina</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></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>Darafei "Kom?pa" Praliaskouski<br><b>Sent:</b> Wednesday, November 24, 2021 3:27 PM<br><b>To:</b> PostGIS Development Discussion <<a href="mailto:postgis-devel@lists.osgeo.org" target="_blank">postgis-devel@lists.osgeo.org</a>><br><b>Cc:</b> PostGIS Users Discussion <<a href="mailto:postgis-users@lists.osgeo.org" target="_blank">postgis-users@lists.osgeo.org</a>><br><b>Subject:</b> Re: [postgis-users] [postgis-devel] PSC Vote: Keep or drop Flatgeobuf in PostGIS 3.2.0</span><u></u><u></u></p></div></div><p class="MsoNormal"> <u></u><u></u></p><div><p class="MsoNormal">Hi,<br><br>I have not seen flatgeobuf in the wild, and I believe it can be safely removed. <u></u><u></u></p><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">The current implementation is impaired by Postgres' life choices of 1GB limit and thus not usable for any data, just size-limited subset. ogr2ogr seems like a better suited place for it to reside.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">I'm -0 on adding flatgeobuf to core, and -1 on releasing with known crashers. This would converge to "remove if nobody can fix crashers".<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div></div><p class="MsoNormal"> <u></u><u></u></p><div><div><p class="MsoNormal">On Wed, Nov 24, 2021 at 11:10 PM Regina Obe <<a href="mailto:lr@pcorp.us" target="_blank">lr@pcorp.us</a>> wrote:<u></u><u></u></p></div><blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt"><p class="MsoNormal">This is a PSC vote, but we would like some feedback on this from packagers<br>and users as such comments will sway our vote.<br><br>We have two blockers that center around the new FlatGeoBuf format.<br><br><a href="https://trac.osgeo.org/postgis/ticket/5005" target="_blank">https://trac.osgeo.org/postgis/ticket/5005</a> (this one is easily<br>replicatable)<br><br><a href="https://trac.osgeo.org/postgis/ticket/5014" target="_blank">https://trac.osgeo.org/postgis/ticket/5014</a> (this one I can only replicate<br>with the cowbuilder setup Bas Cowenberg provided)<br><br>both I think are manifestations of the same problem how the header is<br>derived and what it's doing with numeric and geometry fields.<br><br>I've taken a stab at troubleshooting and fixing, but did not have much luck.<br>That said, if anyone is willing to help fix that would be great and fix<br>within a 1 to 2 week time period.<br><br>If not I feel that we really need to take it out of our PostGIS 3.2.0<br>release (which will be going on to 3.2.0beta2).<br><br>I'd like to release PostGIS 3.2.0beta2 in about a week or so with flatgeobuf<br>fixed or removed. If removed, we'll push flatgeobuf to PostGIS 3.3.0<br>cycle.<br><br>Thanks,<br>Regina<br><br><br>_______________________________________________<br>postgis-devel mailing list<br><a href="mailto:postgis-devel@lists.osgeo.org" target="_blank">postgis-devel@lists.osgeo.org</a><br><a href="https://lists.osgeo.org/mailman/listinfo/postgis-devel" target="_blank">https://lists.osgeo.org/mailman/listinfo/postgis-devel</a><u></u><u></u></p></blockquote></div></div></div></div><p class="MsoNormal">_______________________________________________<br>postgis-devel mailing list<br><a href="mailto:postgis-devel@lists.osgeo.org" target="_blank">postgis-devel@lists.osgeo.org</a><br><a href="https://lists.osgeo.org/mailman/listinfo/postgis-devel" target="_blank">https://lists.osgeo.org/mailman/listinfo/postgis-devel</a><u></u><u></u></p></blockquote></div><p class="MsoNormal">_______________________________________________<br>postgis-devel mailing list<br><a href="mailto:postgis-devel@lists.osgeo.org" target="_blank">postgis-devel@lists.osgeo.org</a><br><a href="https://lists.osgeo.org/mailman/listinfo/postgis-devel" target="_blank">https://lists.osgeo.org/mailman/listinfo/postgis-devel</a><u></u><u></u></p></blockquote></div></div></div></div></div></div>_______________________________________________<br>
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