[Imports] Help request on Guatemala municipal boundaries

[Pavel Machek]

On Thu 2017-06-22 09:41:47, Christoph Hormann wrote:
> On Tuesday 20 June 2017, CARLOS A. DUARTE wrote:
> > >
> > > Then, I compared the existing information in OSM with the official
> > > municipal boundaries shapefile from Guatemala (from National
> > > Geographic Service) and I found that most of the existing polygons
> > > are different to the official polygons, so I am exploring the idea
> > > of replacing all the polygons with the official shapefile.
> 
> A general reminder here:
> 
> If boundary data comes from official sources that does not imply the 
> data precisely documents the boundary as surveyed/defined.  On the 
> contrary the vast majority (in my experience 80-90 percent) of 
> administrative boundary data sets published by official institutions 
> are either simplified to some degree or represent 
> approximations/estimations of some kind.

Whereas 99% of data in openstreetmap are approximations/estimations of
some kind. It cuts both ways, and in this case I'd expect "official"
data to be more accurate.
								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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