[OSM-talk] open data

[David Sheldon]

On Wed, Sep 20, 2006 at 05:03:03PM +0100, Paul Dixon wrote:
> AFAIK, CC-SA doesn't require you to share the materials you used to
> create your work, you just need to share the derivative work itself. (In
> order to apply the licence to your work, you must of course have the
> *right* to create and distribute derivative works from your source
> materials).
> 
> If you released your map as CC-SA, it would mean I could, say, take the
> image and rework it so it was wallet sized, say. But it doesn't give me
> the right to demand the materials you used to make it.

I think you are right. But you could also take his map, and trace it,
and create your own CC-by-SA dataset corresponding to his.

So if someone plots a postcode on a map, you can measure the map and
derive the postcode location.

David
-- 
This process can check if this value is zero, and if it is, it does
something child-like.
		-- Forbes Burkowski, CS 454, University of Washington