[Imports] RFC: LA County building import (Los Angeles, California, USA)

Christoph Hormann chris_hormann at gmx.de
Mon Apr 11 18:19:28 UTC 2016


On Monday 11 April 2016, maning sambale wrote:
> Hi,
>
> We've started the import this during MaptimeLA [0] last April 2.
> First project focused on Southside LA [1].
> For any issues regarding the process and the data please post a
> ticket in GH [2].

Let me say that so far and without knowing yet how the results will look 
like in total this seems to be a quite positive example of preparation 
of an import project.  I am particularly referring to

- taking sufficient time to plan things, give people opportunity to 
review and give feedback.
- actually take feedback into consideration and change plans based on 
it.
- not taking too much on in a single step (here: leaving out the 
addresses for example).

Looking at the data entered so far at a few places it seems there are 
quite a few obvious formal errors like geometry artefacts:

https://www.openstreetmap.org/way/407792910

and misclassification of industrial infrastructure as buildings:

https://www.openstreetmap.org/way/408511408

It might be a good idea to refine the data preparation for future work 
packages with special regard to these kinds of problems (like detecting 
very narrow geometries and industrial buildings with non-rectangular 
geometry and marking them for manual inspection).

-- 
Christoph Hormann
http://www.imagico.de/



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