Greetings!

Prague Institute of Planning and Development is an organisation representing the city in spatial planning matters. They publish vast amounts of data through the website Geoportal under CC BY-SA 4.0, including regularly-updated high-resolution aerial imagery of the entire city.

Just over a year ago I noticed that there were some attempts to negotiate a permission to use their imagery for OSM, but the last news from that front was almost a year old. Being the sort of a person who tends to ask questions first and ask questions later, I decided to write them an email to find out what state were the negotiations in.

I listened to their reasons for keeping the data under CC BY-SA 4.0 and a few reassuring emails later I received an email containing the following:

“IPR Praha souhlasí s využíváním ortofotografií, které poskytuje prostřednictvím Geoportálu hl. m. Prahy, za účelem aktualizace a doplňování databáze OpenStreetMap, přičemž vzniklá vektorová data smí být vložena do OSM pod licencí ODbL za předpokladu, že IPR bude uveden v seznamu přispěvatelů do OSM a takto vzniklá data budou mít IPR uveden jako svůj zdroj.”

A simplified translation for the non-Czech-speakers out there:

“[The Institute] agrees with the use of aerial imagery provided through [the website] for OSM. Resulting vector data may be published by OSM under ODbL provided that [the Institute] will be listed among the contributors to OSM and the data will list the appropriate source.”

Needless to say I had the contributors wiki-page edited almost immediately. And so we got ourselves some very shiny imagery to use.

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