Re: Preferred grid format for transformations?

Le 25/11/2019 à 23:04, Even Rouault a écrit :

> (...snip...), a ".nc" being netCDF 3 would work with a hand written 
> netCDF v3 reader, but suddenly people would want to use another ".nc" 
> that happens to be netCDF v4/ HDF5 and that wouldn't work.
>
But could this problem be mitigated by an explicit error message of the 
kind "The use of this datum shift grid file require PROJ to be compiled 
with option +NetCDF4"? (the NetCDF version can be identified by magic 
numbers).

     Martin


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