Hello Nicolas Le 22/07/2026 à 11:55, SIMON Nicolas via PROJ a écrit :
Another aspect of the problem is the stability of the official definitions already in place. For the Belgian Lambert 2008 projection (EPSG:3812), the EPSG has defined a new projection with epochs (EPSG:11219). This is a good approach. However, the following problems arose: (…snip…)
Yes, an ESRI employee reported this kind of problem during the last OGC meeting (I don't know if it was for the same CRS). I cannot said whether EPSG should have created new CRSs for such cases, it is not my call. However, we reminded that CRS codes in URN or HTTP forms have a version number. It is admittedly not widely supported, but not nonexistent neither: at least one open source project supports versioned EPSG codes for about 10 years, admittedly not in a convenient way (users must install themselves each version of the EPSG databases they are interested in). I realize that versioned EPSG will not become mainstream easily, but it could be a long term goal. While some changes are clearly minor editions (e.g. typo in a comment) and some other changes are clearly majors enough for deserving a new CRS, I think that there will always be gray area between the two.
Martin _______________________________________________ PROJ mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/proj
