Hi all,
I just ran into an issue when using the following projection block returned
"msProcessProjection(): Projection library error. proj error "Invalid value for
an argument" for "init=esri:54052":
PROJECTION
"init=esri:54052"
END
However using the following without the "init=" works:
PROJECTION
"esri:54052"
END
This is confusing as "esri:54052" is in the proj.db, and for EPSG code both
approaches work e.g. "init=epsg:4326" and "epsg:4326" are both fine.
As noted in the PROJ docs [1] the "init=" PROJ strings were deprecated in
PROJ6.
So a couple of questions:
1. Should we update the msautotests and MapServer docs to remove "init=" from
PROJECTION blocks?
However I think the "init=" needs to be kept to support custom projections
not in proj.db as used in [2]
2. Should we consider having a minimum required version of PROJ for a future
release of MapServer? This would allow backwards compatible code to be removed.
Seth
[1]
https://proj.org/en/9.2/development/migration.html#backward-incompatibilities
[2] https://github.com/MapServer/MapServer/pull/6795
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