roozbeh at gmail.com
Mon Apr 9 16:43:48 BST 2007
> If you look at most of the records I've found on worldaerodata.com, the source
> for the data seems to be DAFIF (US National Geospatial Intelligence Agency),
> which certainly used to be public domain due to it being US taxpayer funded.
Public domain sources of data don't make derivative products public
domain also. It's not like a ShareAlike license. One can random
restriction of his own to the license.
If I only use public domain source for my work, I may still be able to
claim copyright over it. So, please either use the original public
domain source directly, or don't do this. Otherwise, you may be
compromising the data.
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