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

maning sambale emmanuel.sambale at gmail.com
Mon Apr 11 15:18:34 UTC 2016


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].

[0] http://www.meetup.com/MaptimeLA/events/229861154/
[1] http://labuildingsimport.com/project/2
[2] https://github.com/osmlab/labuildings/issues


On Sun, Mar 27, 2016 at 12:20 AM, Christoph Hormann
<chris_hormann at gmx.de> wrote:
> On Thursday 24 March 2016, maning sambale wrote:
>>
>> > - Tagging still looks vague.  What you have on
>> > https://github.com/osmlab/labuildings/blob/master/README.md is just
>> > a list of OSM keys to use but there is no information on the values
>> > -
>>
>> Right, I updated the wiki to describe the tags.  Still a work in
>> progress, but see here:
>> https://wiki.openstreetmap.org/wiki/Los_angeles,_California/Buildings
>>_Import#Data_Preparation
>
> Thanks, this clarifies things a lot and mostly looks good.
>
> Regarding tagging plans please consider that building=farm is
> exclusively for residential building on a farm, not for other buildings
> with farming related use.
>
>> The initial offset we saw was due to re-projection issues from NAD83
>> to WGS84 datum.  By using a custom projection parameters the
>> difference is very minimal difference (10 micrometer precision
>> range). Reprojection is now step is now added in the wiki.
>
> OK. I was also concerned about vertical datum (i.e. reference geoid) for
> elevation values and feet vs. meters for ele and height.
>
> --
> Christoph Hormann
> http://www.imagico.de/



-- 
cheers,
maning
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