[OSM-talk] Ditches

[Pieren]

On Tue, Dec 15, 2009 at 12:49 PM, Steve Bennett <stevagewp at gmail.com> wrote:

> Anyway, I'm pretty sure it's already ok to have drain and road cross
> (without junction) at layer=0 - they'll be rendered right by any
> reasonable renderer.

No ! That's not ok to rely on any "reasonable" renderers.
This is exactly what we mean when we say "don't tag for the renderer".

Always add the layer tag. And don't add a node at the intersection if
they are not at the same layer. Otherwise how any software can "guess"
if it's an intersection or not ? By going through thousands different
combinations of highways/waterways/railways/etc tags ?

Pieren

Pieren