[OSM-talk] Opinion poll about the new licence Odbl 1.0

[Tobias Knerr]

Pieren wrote:
> Could someone deliver a script that could make this automatically for
> me  :"take all elements where I am the last contributor but not the
> only one then delete and recreate them identically under my user
> account then all my efforts are saved at the licence transition" ?

In my opinion, whether your data is derived from other data isn't
determined by having the same object ID. If I completely remove all tags
from a node, move it somewhere else and add new tags, then it's most
likely not derived from the previous work. If I add a tag to a road,
then it is derived from previous work, and this doesn't change at all if
I choose to copy the road and delete the original.

Using the object history is just an approximation based on the
assumption that mappers will usually keep an object if they are
improving existing data, and create new objects if they add completely
new information. It's not really possible for an automated process to do
anything else.

Tobias Knerr