[OSM-talk] tagging and rendering highways in the USA and elsewhere

[Karl Newman]

On Fri, Apr 18, 2008 at 11:14 AM, Tom Hughes <tom at compton.nu> wrote:

> In message <8298be230804181044u1e83ea15vb879cee623f02a6a at mail.gmail.com>
>           "Adam Schreiber" <sadam at clemson.edu> wrote:
>
> > On Fri, Apr 18, 2008 at 12:33 PM, Tom Hughes <tom at compton.nu> wrote:
> > >  The problem is that we do not have the technology to render different
> > >  countries in different ways. I don't believe we even know of an
> efficient
> > >  way to do it, so we don't even know what the technology would look
> like
> > >  should somebody want to write it.
> >
> > Shouldn't this be as easy as adding a tag indicating country and
> > altering the stylesheet to say highway=motorway country=us =>
> > color=yellow, highway=motorway country=uk => color=blue?
>
> Yes, obviously we could make everybody go round and tag the umpty
> million objects in the database with a country code. That is a pretty
> daft solution though when it should be possible to automate it.
>
> Of course as soon as we'd done that people would start asking for
> the shield shapes to change by state so we'd have to go round and
> add state tags and so on...
>
> Tom
>

Well, the ref tag should already have that information for the US anyway, so
custom shields (and colors) could be done for interstates ("I 5"), US
highways ("US 101"), state highways ("US:CA 12") but probably not county
highways ("CTH 22").

Karl
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