sent from a phone

> Il giorno 20 nov 2016, alle ore 16:21, Pavel Machek <[email protected]> ha scritto:
> 
> In first versions of the czech building "import", users were tracing
> outlines from scanned maps. Quite substantial task, not too different
> from tracing roads in satellite images.


IMHO substantially different: tracing aerial imagery is interpretation, tracing 
another map is copying.

Cheers,
Martin 
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