[OSM-newbies] Buildning alignment

[Florian Lohoff]

On Fri, Jun 12, 2015 at 10:56:30AM +0100, SomeoneElse wrote:
> On 12/06/2015 10:16, Arne Jakobsson wrote:
> >Hi all,
> >I draw buildings, and was taught somewhere that we should align
> >the building outline with its roof. Doing this, I ran into some
> >trouble. http://i.imgur.com/vaOFIb5.gif
> >The road intersect the building. This would not happen if we
> >instead just kept to aligning the building outline with its base.
> >Is there a right way to do this?
> >
> 
> Personally I always try and align building footprints with the base
> rather than the roof (otherwise very tall buildings would look very
> odd indeed).
> 
> I can see why (if you were mapping lots of small buildings in e.g. a
> HOT response) it would be easier to say "just trace the roofs" -
> it'd get more buildings traced quickly at a good enough quality
> (which surely is the aim there), but as a general principle where
> time isn't an issue I'd certainly try and trace the building
> footprint.

As the parallax-shift is the same for the full of the sat image you can
also draw 100 Buildings and shift them at once 

Just make shure that you are not shift already shifted buildings or
buildings taken from images with a different parallax problem.

Flo
-- 
Florian Lohoff                                                 f at zz.de
     We need to self-defense - GnuPG/PGP enable your email today!
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