[OSM-talk] altitude information

[Christoph Eckert]

> It seems to me that if you're rendering streets in 3D, you
> really also want to know the heights of everything even where there
> are no nodes.

true indeed.

> Look, I'm not suggesting forbidding heights on nodes, I'm just saying
> that simply copying altitude data from another layer and storing it
> in the nodes is silly. Have a base layer that describes altitude for
> every place on the planet, then allow individual nodes to override
> *if necessary*.

Not that bad at all. The question is how difficult it will be for users 
(e.g. renderers) to get the alt information for any nonde if it needs 
to be computated during data retrieval.

Cheers,

ce