[OSM-newbies] Building footprint heights in OSM?

[Cartinus]

Hello,

* There is height=... for when you know the exact height.
* There is est_height=... for when you guessed (estimated) the height.
* There is building:levels=... for when you counted the flours.
* I probably forgot some other tags......


On 12/12/2011 07:26 AM, Andrew Salzberg wrote:
> Andrew,
>
> thanks.
>
> I guess I've been relying on others who compile and export data into
> shapefiles - but maybe now I'll have to dig in and figure out how to
> convert OSM to shapefile myself, in order to capture all the tags I
> want...
>
> andrew
>
> On 12/12/11, Andrew Errington<a.errington at lancaster.ac.uk>  wrote:
>> On Mon, December 12, 2011 14:28, Andrew Salzberg wrote:
>>> Hi,
>>>
>>>
>>> I'm wondering if there is a standard attribute for heights for
>>> building footprints in OSM - it seems like there's some conversation about
>>> this. Geofabrik does a great job of exporting OSM as shapefiles which I
>>> have made use of, but the building footprint layer does not include height
>>> - eg # stories of floors - which could then e easily
>>> extruded for analysis.  Is that because such features don't exist in OSM
>>> right now, or are not standardized? These bulding heights would be a huge
>>> help and obviously very useful.
>>>
>>> any guidance appreciated!
>>>
>>
>> height=* is probably your best bet:
>>
>> http://wiki.openstreetmap.org/wiki/Building_attributes
>>
>> Most people don't put the info in, since it is only visible to local
>> mappers.  It's hard or impossible to derive from aerials or GPS traces.
>>
>> If you multiply the number of storeys (if present) by, say, 3 metres you
>> might get a reasonable approximation of height.
>>
>> Best wishes,
>>
>> Andrew

---
m.v.g.,
Cartinus