[OSM-talk] Getting highway refs onto the mapnik slippy map layer

[Tom Chance]

On Friday 05 October 2007 03:06:00 Sven Grüner wrote:
> Alex Mauer schrieb:
> > IMO, even secondary refs should start at zoom 11.  primary at around
> > 10, and motorway and trunk up at 7 or maybe even 6.
>
> Ideal would be a smart algorithm, dependent on the surrounding street
> density.

Indeed, can't Mapnik already do this?

Look at London at zoom level 10 and imagine every red road having a label, it 
would be impossible to read:
http://www.openstreetmap.org/?lat=51.5024&lon=-0.1107&zoom=10

Usually maps at that level of detail would show the motorways, the main trunk 
roads leading into London, the north & south circular trunk roads, and maybe 
a handful of place names.

Then again look at some of the home counties, where you could label most 
primary roads at level 10:
http://www.openstreetmap.org/?lat=52.0529&lon=-0.5392&zoom=10

Kind regards,
Tom

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