Hi,

On 02/02/11 18:00, Peter Miller wrote:
The strict view expressed above by Frederick and others would mean that
it would be impossible to use osm mapping as a bacground for this crime
data as in the chart, 'Violent crime in the USA' unless the overlaid
data was also on an open licence or the crime data was to the side of
the map.

http://thesocietypages.org/graphicsociology/2009/02/17/typical-crime-map-victimization/

Yes. (In fact I presume the overlaid data is PD in this case so no problem.)

And this one showing the location of the 'Trafford Law Centre' unless
the photo was also on a free license or moved so as not to obscure the map.
http://www.traffordlawcentre.org.uk/contact_us/contact.htm

This is a funny example because you could conceivably cut out a corner from the map, then place the image where it is now... it is just about conceivable to make a copy of this map without copying the image so maybe this could work as a collection.

How about this map of the Isle of White overlaid with illustrations?
http://www.steve.shalfleet.net/

Certainly the whole map needs to by CC-BY-SA.

We did have some pages with examples about this on our wiki, years ago. I remember the example was a tourist guide with maps and photos, and there were several cases where maps and photos (and text) were sometimes superimposed, sometimes side-by-side, and the whole thing was commented as to what is derived and what is collected. I cannot find it now, however.

I think that in those examples, there was the concept of interaction and co-dependency - the question of "does the overlaid stuff work without the map". So if you carefully place your photo or illustration at a certain point in the map, and your photo or illustration would lose its meaning without the map, then it is clearly a derived work; but if your photo just sits there and could just as well sit there without the map, then it could be called a collection. This is not an interpretation I necessarily share and I'm not sure about the exact wording but it has something going for it.

Indeed anything overlaid on the map, or any other ccbysa image or
photograph would need to be on an open license if the strict
interpretation was used.

I don't think this interpretation is particularly strict. There have indeed been several people requesting that my OSM book be fully CC-BY-SA'ed because it contains OSM illustrations on some pages - *That* I call a strict reading (and one I clearly don't share).

Bye
Frederik


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