[OSM-newbies] Buildning alignment

[Florian Lohoff]

On Fri, Jun 12, 2015 at 11:16:41AM +0200, 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?

Typically you dont have exact images from the top as you can see on your
image. So you would take the roof as the measurement because it can be
seen completely and make it a box. Then you shift the box until the
corner matches the ground truth of the building. We map stuff at ground
level typically. 

Then your road will not overlap the roof - its just a
imaging/parallax/projection issue you have.

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