Still working away at this. A function to search for streets, towns etc.
should (that can be a very deceptive word :) ) be simple enough to build into
the poi finder by adding a few extra functions to gpsdrive's database access
layer, the most important parts are already there.
There are some problems though, the osm data doesn't really have much in the
way of street numbers, fine if its a short street but not so good for streets
several miles long.
For now separate entries for country, town and street will work but it could
really do with a proper search engine.
Routing. In short, its almost impossible with existing osm data, more on why
here:
http://wiki.openstreetmap.org/index.php/Routing_with_osm_data
Is it just me that has trouble finding anything on that wiki? Anyway, it could
be possible to do routing by searching for roads that nearly join and assume a
junction, either in the db or directly in the routing functions but it would
be slow, inaccurate, require a lot of work and would frequently plot routes
that expect you to drive through walls. Openstreetmap are trying to deal with
the issue so it will be possible at some stage.
cheers
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