[Openstreetmap] recording heights?

[Immanuel Scholz]

> I haven't seen any mention of it anywhere, but does openstreetmap.org make
> any attempt to record heights?
>
> Most of the tracklogs uploaded probably have a height component, but am I
> right this doesn't really make it into the main database?
>
> This would be a great opportunity for creating a DEM from the data, even
> given the low quality of height readings on a GPS device.

Uhm, as I already said some hours ago in the list, my opinion is, that
only those heights should be uploaded, which are not the "earth surface"
height.

As example a bridge, a tower, sightseeing, location of a WLAN hotspot (if
it is in the 15'th floor of a building ;) or something like that.

Just upload bulk height information seem not to be necessary for me.


> Or is the focus just to merge the mapping data with already available
> DEM's (such as STRM on free-map.org.uk)?

Exact this. The earth height are stored in big databases. Clients that
visualize this can grab the information from there. No need to have this
in Open"Street"Map.

However, just my opinion. I have no problem with people uploading height
values for every point.. I just don't think it is THAT usefull..

Ciao, Imi.