NTv2-BB.gsb: Pulkovo 1942(83) -> ETRS89 in Brandenburg could be included

[nyalldawson]

Available from https://www.geobasis-bb.de/geodaten/dienst_progr.htm

[rouault]

The above link no longer works. Wayback machine has an interesting old version https://web.archive.org/web/20190512124712/https://www.geobasis-bb.de/geodaten/dienst_progr.htm where it appears the grid has an associated fee

[nyalldawson]

I think I posted the wrong link. It should be:

https://geobasis-bb.de/lgb/de/geodaten/raumbezug-sapos/koordinatentransformation/

which states : "Costs: the delivery of the program is free of charge"

[nyalldawson]

Which links to https://geobroker.geobasis-bb.de/gbss.php?MODE=GetProductInformation&PRODUCTID=3b55a940-95c7-42d6-901b-1215ebffc1f6, which states

Conditions for access and use
Terms of use: Data license Germany - attribution - version 2.0, https://www.govdata.de/dl-de/by-2-0 ; dl-de-by-2.0, attribution: "GeoBasis-DE / LGB", example: "© GeoBasis-DE / LGB, dl-de / by-2-0, (data changed)", (brackets = optional)

Restrictions on public access:
other restrictions:
dl-de-by-2.0 , source: © GeoBasis-DE / LGB, dl-de / by-2-0

[rouault]

ZIP with grid downloaded from https://geobroker.geobasis-bb.de/eco.php?mode=inWarenkorb&aProductId=3b55a940-95c7-42d6-901b-1215ebffc1f6 attached here:

1938473531000010861_data.zip

with Terms of use: Data license Germany - attribution - version 2.0, https://www.govdata.de/dl-de/by-2-0 ; dl-de-by-2.0, attribution: "GeoBasis-DE / LGB",

[rouault]

WARNING: This repository is no longer open for adding new datasets. Starting with PROJ 7, the PROJ-data repository is the new home for PROJ datasets.

Go to its CONTRIBUTING instructions