[PROJ] Request for NTv2 Grid Files for ED50, IGM95, and Monte Mario to RDN2008 Transformations

[Even Rouault]

Hello,

unfortunately we cannot help you. Those files are not available under an 
open data license, and must be acquired for a fee with 
https://www.igmi.org/en

Even

Le 01/05/2025 à 17:47, Sourabh Arora a écrit :
>
> Dear Sir,
>
> I hope this message finds you well.
>
> I am currently working on a geospatial project that requires accurate 
> coordinate transformations for Italian geodetic systems using 
> PROJ/GDAL on Windows. In particular, we require NTv2 grid files for 
> the following transformations:
>
> 1.
>
>     ED50 to RDN2008
>
>     Grid: 35160622_47161840_E50_F00.gsb
>
> 2.
>
>     IGM95 to RDN2008
>
>     Grid: 35160622_47161840_F89_F00.gsb
>
> 3.
>
>     Monte Mario to RDN2008
>
>     Grid: 35160622_47161840_R40_F00.gsb
>
> These grid files are referenced on EPSG and PROJ documentation but are 
> not publicly available in the PROJ-data repository or through 
> projsync. As these transformations are critical for our application’s 
> spatial accuracy, I would kindly like to request access to these .gsb 
> files.
>
> If there formal procedure I need to follow, I would be happy to comply.
>
> Please let me know if additional information is required regarding the 
> area of interest or the intended usage.
>
> Thank you in advance for your time and support.
>
> Best regards,
>
> Sourabh Arora
>
-- 
http://www.spatialys.com
My software is free, but my time generally not.
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