[OSM-talk] [Talk-us] OpenStreetMap Isn't All That Open, Let's Change That and Drop Share-Alike

Florian Lohoff f at zz.de
Tue Mar 18 08:19:40 UTC 2014


On Sun, Mar 16, 2014 at 08:41:02AM -0400, Phil! Gold wrote:
> Google appears to do both, probably because they've gotten really good at
> data conflation.  They already pull data from multiple datasets, including
> proprietary data like Telenav's, public domain data from governments and
> such, and restricted use data from local governments, and then they
> integrate GMM contributions on top of that amalgamation.

Yes - they stitch together data from multiple sources. But they do it in
spatially diverse regions. (For the same datatype - you can intermix
different providers for addresses and road geometries although the end
product will look broken here and there)

Once you turn on editing you cant go back without manual postprocessing.

Today you add a street with mapmaker - tomorrow some commercial
pre-product has the same street with different topology or probably 
different attributes. You cant handle this in an automated manner.

Florian Lohoff                                                 f at zz.de
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