[PROJ] Interested in helping for inclusion of grids for Spain, Austria, Slovakia, Brazil ?

[Jeff McKenna]

There has been some progress from the QGIS-Brasil community, pointing to 
the official grid shift files.  I have filed a ticket with the info, and 
will try to get others to comment directly in the ticket: 
https://github.com/OSGeo/proj-datumgrid/issues/101

-jeff



On 2019-12-02 9:09 AM, Jeff McKenna wrote:
> I've forwarded this to the vibrant QGIS-Brasil community.  -jeff
> 
> 
> 
> On 2019-12-01 7:18 PM, Even Rouault wrote:
>> Hi,
>>
>> I'm requesting help from good wills of the community to help us grow 
>> our datasets of grids at
>> https://github.com/OSGeo/proj-datumgrid/
>> Below a few candidates I've identified, mentionned in EPSG and with a 
>> number of them with
>> download links, but license clarification would be needed.
>>
>> Community members from those countries are probably in a better 
>> position than me to
>> connect with the relevant authority and see if they'd be willing to 
>> adopt one of the licenses
>> mentionned at 
>> https://github.com/OSGeo/proj-datumgrid#about-the-datum-grid-package
>>
>> Spain
>> -----
>>
>> * Peninsula and Baleares:
>>
>> Anyone from the Spanish community to help clarifying license of
>> https://www.fomento.gob.es/recursos_mfom/gridshift1.zip (ED50 to ETRS89),
>> presumably whith IGN Spain
>>
>> The download link is accessible from
>> https://www.fomento.gob.es/organos-colegiados/consejo-superior-geografico/csg/etrs89/etrs89-nuevo-sistema-de-referencia-geodesico-oficial-en-espana 
>>
>>
>> This file has a sort of CC license
>> (https://gist.github.com/rouault/1ff4ad2d8053e068f9dbf451572692f4) but 
>> with a
>> annoying non-modification clause that makes it incompatible with our 
>> requirements
>> (we might want to transform it to another format like GeoTIFF),
>> and no version/link to the actual CC license.
>>
>> * Catalonia:
>>
>> Grid specific to Catalonia for ED50 to ETRS89 : 100800401.gsb
>> File found in 
>> http://www.icgc.cat/content/download/48766/337962/version/1/file/Malla_NTv2_11_03.zip 
>>
>> but no explicit license mention.
>> https://www.icgc.cat/en/Web/Help/Legal-notice has a vague mention of 
>> Creative Commons,
>> but no precise identification of which variant of it, and which version.
>>
>> Austria
>> -------
>>
>> The AT_GIS_GRID.gsb grid for MGI to ETRS89 is available at
>> http://www.bev.gv.at/portal/page?_pageid=713,2157075&_dad=portal&_schema=PORTAL 
>> :
>>
>> http://www.bev.gv.at/pls/portal/docs/PAGE/BEV_PORTAL_CONTENT_ALLGEMEIN/0200_PRODUKTE/UNENTGELTLICHE_PRODUKTE_DES_BEV/GIS-Grid.zip 
>>
>>
>> Copyright info I could find is
>> "Hinsichtlich seiner Datenbanken verfügt das BEV über das ausschließliche
>> Werknutzungsrecht gemäß §§ 40f bis 40h UrhG und das sui generis-Recht 
>> gemäß §§ 76c bis 76e UrhG."
>>
>> which by itself is not super promising.
>>
>> Slovakia
>> --------
>>
>> https://www.geoportal.sk/en/geodeticke-zaklady/download/ offers for 
>> download 3 grids
>> referenced by EPSG:
>> Slovakia_ETRS89h_to_Baltic1957.gtx
>> Slovakia_ETRS89h_to_EVRF2007.gtx
>> Slovakia_JTSK03_to_JTSK.LAS / .LOS
>>
>> I've emailed the contact mentionned on the site to get info regarding 
>> the license.
>> But wouldn't hurt to get feedback of knowledgeable people too.
>>
>> Brazil
>> ------
>>
>> Looking for official download links & license for the following:
>>
>> Corrego Alegre 1961 to SIRGAS 2000: CA61_003.gsb
>> Corrego Alegre 1970-72 to SIRGAS 2000: CA7072_003.gsb
>> SAD69 to SIRGAS 2000: SAD69_003.gsb
>> SAD69(96) to SIRGAS 2000: SAD96_003.gsb
>>
>> https://www.killetsoft.de/p_gdln_e.htm has download links but official 
>> ones from IBGE
>> would be preferable if possible.
>>
>>
>> Of course there are certainly gaps to fill for other countries I've 
>> not mentionned...
>>
>> Even
>>
> 
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-- 
Jeff McKenna
MapServer Consulting and Training Services
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