geokachel
=========

Copyright (c) 2026 JanderHungrige. Licensed under the MIT License (see LICENSE).

The MIT licence covers **this software**. It does not, and cannot, relicense
the data this software fetches.


The data is somebody else's
---------------------------

This library fetches open geodata published by the German state surveying
authorities, by the Bundesamt für Kartographie und Geodäsie, and by the
Copernicus programme. Each dataset is licensed by whoever published it —
`dl-de/by-2-0`, `dl-de/zero-2-0` or `CC BY 4.0` — and **most of them require a
named credit wherever the data is shown**.

A height displayed without its credit is a height used outside its licence.

Every source in this registry carries the exact credit its licence asks for, in
the words the publisher chose, as a required field on the source itself. It is
not optional metadata and it is not decoration:

    from geokachel import ground_tiles_for
    source = ground_tiles_for("BY")
    print(source.attribution)
    # Datenquelle: Bayerische Vermessungsverwaltung – www.geodaten.bayern.de

If you show a number this library gave you, show that string with it.

A source whose licence forbids this kind of use is not in the registry at all,
however a catalogue describes it — that check happens once, here, rather than
in every program that installs this.


Not affiliated
--------------

geokachel is not affiliated with, endorsed by, or produced by any
Landesvermessungsamt or Landesbetrieb, the Arbeitsgemeinschaft der
Vermessungsverwaltungen der Länder der Bundesrepublik Deutschland (AdV), the
Bundesamt für Kartographie und Geodäsie (BKG), the European Space Agency, or
the Copernicus programme.

Where those names and brands appear in this software, they appear because a
licence requires the publisher to be named as the source of the data — never to
suggest a relationship. In particular the string "GeoBasis-DE" is the surveying
authorities' own brand and appears only inside the credit that they require.
