[OSM-newbies] strange street layout

[Iván Sánchez Ortega]

El Sábado, 2 de Junio de 2007, Franc Carter escribió:
> http://www.informationfreeway.org/?lat=-33.916995914779854&lon=151.15609232
>91617&zoom=17&layers=B000F00
>
> I initially mapped it with topological correctness in mind - but this
> produces street name that overlayed on each other
> and hard to read

That? Hard to read? That's nuthin'. Have a look at my city:
http://www.informationfreeway.org/?lat=40.40533027070244&lon=-3.7145036744675886&zoom=17&layers=B000F00
http://www.informationfreeway.org/?lat=40.38607136623471&lon=-3.7510138956704173&zoom=17&layers=B000F00
http://www.informationfreeway.org/?lat=40.42883059769659&lon=-3.610670021572797&zoom=17&layers=B000F00

Besides those junctions, I think that Madrid is one of the few cities with 
street lights *inside* roundabouts...

> Any advice on how make this topologically correct and render nicely ?

Map with topology in mind:
- Roads at different heights = different ways
- Roads with a median[1] of *any* size = different ways.
- Draw segments in the direction of the traffic

[1] http://en.wikipedia.org/wiki/Central_reservation

And don't worry about the rendering. Let the renderers worry about it. Hacking 
the renderers (osmarender and mapnik) can be pretty tricky.

-- 
----------------------------------
Iván Sánchez Ortega <ivansanchez at escomposlinux.org>

You will gain money by an illegal action.
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