[OSM-talk] colour fills in osmarender

[Etienne]

On 6/9/06, Raphaël Jacquot <sxpert at esitcom.org> wrote:
> Etienne wrote:
>
> > Are loops and branches in ways a good thing or a bad thing?   I can
> > imagine that route planning applications might find them problematic,
> >
> > Etienne
>
> I believe we shouldn't have loops of any sort.
> routing algorithms like to have straight simple topologies. loops add a
> huge level of complexity that I don't think is necessary

To do this, ways would need to be constrained so that segments can
only be contiguous within a way
(segment/@toNode=following-sibling::segment/@fromNode).  This would be
a good thing IMHO.

However, if you don't have ways with loops and branches then you don't
really need segments at all.

Some questions though:

How would a roundabout be defined?  Is that a way or a point?

Some roads, especially residential housing estates, can have roads
that split and merge and branch, but only have one name.  How can that
be achived economically?

Etienne