[OSM-legal-talk] Attribution/Licensing for map derived from Standard OSM TIles

Peter Cooper Jr. pete-openstreetmap-legal-talk-list at cooperjr.name
Sun Jan 3 02:53:20 UTC 2021


Hello! I tried asking my question on the Q&A Forum 
<https://help.openstreetmap.org/questions/78020/licensecrediting-my-edited-export-of-osm> 
but didn't really get an answer in the past couple weeks, so I figured 
I'd try here and maybe someone here can help me. I think that this 
should be simple, but the more I read through the copyright pages the 
more confused I get. It feels like how this all works should be obvious 
to me but I'm just not understanding and want to make sure I'm doing 
this right.

I'm working on making a map for directions to my house. I went to 
OpenStreetMap.org, went to an area containing my house and the major 
roads around it, and exported a box of it to an SVG file using the 
"Share" functionality. I then opened that SVG in Inkscape and made some 
modifications, like removing things I didn't need and adding more 
specific labeling around the important landmarks on the way to my house. 
For the most part these landmarks (road names, that a building where one 
turns is made of brick, etc.) are in the underlying data but weren't 
visible on the map I exported. And then I added a marker indicating my 
house.

I want to post this edited SVG file on my web site alongside some 
text-based directions I already have and wrote myself. While I can find 
information on requirements if I use the underlying data myself to make 
a map, or if I just present the standard tiles directly, I can't find 
information on the case of starting with the standard tiles but then 
modifying them.

1) What credit text do I need to put on (or next to) the map? Is it just 
"Base map and data from OpenStreetMap and OpenStreetMap Foundation" like 
if I was using the tiles directly, or do I need to make clearer somehow 
which data is from OpenStreetMap and which edits I made?

2) Is there some license I need to publish this completed SVG file under 
to comply with share-alike rules? I'm certainly fine with anyone using 
the work I did, but I'm assuming (since I don't own all the data) I 
can't just put the image into the public domain and be done with it? A 
lot of the "derived database" stuff seems to assume you're doing 
something more complicated than I am of just annotating the map image 
which is part of what's confusing me.

While I don't think it matters for my specific questions, before making 
the export I have made some fixes to the area near my house in the 
standard iD editor to make the map more complete and accurate near me.

Thanks!
-- 
Peter




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