[PROJ] PROJ resources version stability

[Even Rouault]

There have been a few database structure changes in proj.db since PROJ 
6, so in general you should only use a given proj.db with the PROJ 
library for which it was built, otherwise things will badly break. And 
even if the structure is the same, there might be some subtle changes, 
like new EPSG operation method codes, that one version may support and 
another one not.

Le 05/03/2021 à 12:09, Søren Holm a écrit :
> Ok. How about proj.db and the vast majority of files usually located in /share/
> proj/  ?
>
> fredag den 5. marts 2021 12.07.10 CET skrev Even Rouault:
>> Søren,
>>
>> Le 05/03/2021 à 11:39, Søren Holm a écrit :
>>> Are the resources distributed with PROJ stable to be used across PROJ
>>> versions? Can resources from 6.x be used with 8.x?
>> Yes, you can still use the proj-datumgrid-XXXX packages that use grids
>> in the formats NTv2, GTX, etc. with PROJ 8, although for optimal results
>> you should now use the proj-data package that contain a more
>> comprehensive set of grids in GeoTIFF format.
>>
>> Even
>
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