[Qgis-user] Grid shift FIle for MSI version

[Dario]

Yes, I get different results. I tried also to copy all the file inside proj folder from exe to msi version (they are different), but nothing happens.



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Il giorno 31 ago 2021, alle ore 19:58, Even Rouault <even.rouault at spatialys.com> ha scritto:




Le 31/08/2021 à 19:56, Dario a écrit :
> First of all all, thank you for your reply.
> 
> Regarding the grid issue, you know why whit the exe release I don’t have this kind of problem?
I'm not familiar with the Windows packaging side. Perhaps an older PROJ version where the existence of the grid wouldn't even be present in the database. But do you actually get different results when using both versions ?
> 
> 
> 
> _
> 
> Il giorno 31 ago 2021, alle ore 19:48, Even Rouault <even.rouault at spatialys.com> ha scritto:
> 
> 
> If I recall well, this grid is produced by Istituto Geografico Militare (IGM), www.igmi.org but they don't propose it for free. You'll have to pay to get it.
> 
> Even
> 
> Le 31/08/2021 à 19:40, Dario C a écrit :
>> Hi,
>> 
>> I'm working on a 3003 project with 7791 layers. Once I updated to 3.16.10 msi release I received this message: 
>> "The preferred transfer between EPSG: 7791 - RDN2008 / UTM zone 32N and EPSG: 3003 - Monte Mario / Italy zone 1 is not available for use in the system.
>> This transformation requires the lattice file "35160622_47161840_R40_F00.gsb", which is not available for use on the system.
>> The current transformation "Inverse of UTM zone 32N + Ballpark Geographic offset from RDN2008 to Monte Mario + Italy zone 1" has an unknown accuracy, while the current transformation "Inverse of UTM zone 32N + Inverse of Monte Mario to RDN2008 (5) + Italy zone 1 "has an accuracy of 0.1 meters."
>> 
>> and actually I have translated projection between 7791 and 3003 (around 100 meter)
>> 
>> I tried to install 3.16.10 exe (instead of msi) and everything works well.
>> 
>> Is it a bug or I just need a .gsb file? In this case, where can I find .gsb file? Thank you
>> 
>> cheers
>> 
>> 
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