There is another solution like the one adopted byQGIS which used also .qpj with OGC, see Supported Data Formats (qgis.org) <https://docs.qgis.org/2.2/en/docs/user_manual/working_with_vector/supported_data.html> at Supported Data Formats (qgis.org) <https://docs.qgis.org/2.2/en/docs/user_manual/working_with_vector/supported_data.html>
.qpj example QGIS-Training-Data/polygons.qpj at master · qgis/QGIS-Training-Data (github.com) <https://github.com/qgis/QGIS-Training-Data/blob/master/exercise_data/postgis/polygons.qpj> Il giorno gio 25 ago 2022 alle ore 13:48 <edgar.sol...@web.de> ha scritto: > reads like Esri is cooking it's own soup there, > > https://gis.stackexchange.com/questions/129764/how-are-esri-wkt-projections-different-from-ogc-wkt-projections > > so the clean way probably would be, using the Esri definition if we got > one or none, if we have not presuming that SHP is an Esri format and > readers would expect those. on the other hand it seems that Gdal is more > flexible wrt. the prj file format (at least wrt. reading), so maybe what > they do for _writing_ is the way to go? > > https://gis.stackexchange.com/questions/355184/prj-files-from-esri-arent-wkt > > ..ede > > On 25.08.2022 09:08, Michaud Michael wrote: > > Ede, Peppe > > > > EPSG is good at listing all known coordinate systems in the world but > unfortunately, > > > > standardization to describe them is a slow process and we sometime have > to deal with > > > > different identifiers (ex. epsg/esri), names (wkt/esri convention), > formats (wkt, wkt2). > > > > This post gives some good hints on this problem : > > > > > https://gis.stackexchange.com/questions/355184/prj-files-from-esri-arent-wkt > < > https://gis.stackexchange.com/questions/355184/prj-files-from-esri-arent-wkt > > > > > > When I added pe_list_projcs_geogcs, it was because we cannot retrieve > the exact > > > > esri denomination from the srid2prj.txt which is based on epsg data. > > > > I don't know why some srid are missing from pe_list_projcs_geogcs but it > is an esri database not epsg. > > > > Now, if the srid is not find in pe_list_projcs_geogcs, I get it > from srid2prj as sugggested by Peppe but > > > > this later does not follow esri naming convention. An "esri" friendly > name can be retrieved > > > > from epsg.io web site, but this is online. I don't know if they use a > esri database or if they use > > > > some rules to make names esri friendly as discussed in the post. > > > > > > Michaël > > > > > >> envoyé : 21 août 2022 à 13:20 > >> de : edgar.sol...@web.de > >> à : jump-pilot-devel@lists.sourceforge.net > >> objet : Re: [JPP-Devel] OpenJUMP throws a null point exception if > coord_ref_sys is found > >> > >> > >> On 21.08.2022 10:56, Michaud Michael wrote: > >> > >>> Hi Peppe, > >>> > >>> You're right, I found 171 srid in srid2prj which are not > in pe_list_projcs_geogcs.zip. > >>> > >>> Can you remember where the srid2prj file comes from ? And can you > telle me which projection you use which are not > in pe_list_projcs_geogcs.zip (just curious). > >>> > >>> Using several reference file is far from ideal, but until we find a > better option, your proposition seems reasonable to me. > >>> > >> hmm, a quick text search does not find all of these in > https://github.com/Esri/projection-engine-db-doc/ > >> > >> and what i can find is spread over several files. any idea why that is? > >> > >> why is there not a _complete_ epsgid/name mapping file somewhere? or is > there and we are just not using it? > >> registering and downloading wkt files-zip from > https://epsg.org/download-dataset.html seems to inlude "all" of the > missing epsg-ids. should we reformat and use those? > >> > >> sunny regards ..ede > >> > >> > >> _______________________________________________ > >> Jump-pilot-devel mailing list > >> Jump-pilot-devel@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > >> > > > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >
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