I'm new to GpsDrive. Half a year ago I bought my first GPS
receiver and dug myself into Geocaching and www.openstreetmap.org
where people collect tracklogs and draw open source maps from them
in a wiki fashion. Only this week did I start to think about what
these maps could be used for, and so GpsDrive came to mind.
The GpsDrive FAQ says the program doesn't support turn-by-turn
navigation because there is no free vector map data to support
this function. But suppose the data did exist! It doesn't
really, but I think this could be one outcome of the OpenStreetMap
project. Do you have the algorithms for this? Can you describe
what kind of data structures or format you would prefer?
At this moment, the Open Street Map (OSM) data is basically dots
and line segments, and the line segments can have attributes that
indicate things such as what kind of traffic is allowed or the
type of road. This is raw material available under the Creative
Commons SA-BY license. Coverage is spotty at best, but increasing
all the time, and to everybody who complains it provides a place
where they can contribute.
OSM as a project can need some actual users that put requirements
on what the output data should look like in order to be useful.
Currently the project seems to be dominated by nerds like me who
would contribute anyway. I have mapped the most of my town
(Linköping, Sweden), and it would be fun to turn these dots and
lines into a map that can be used for route planning and
turn-by-turn navigation. Oslo and London are other good candidate
cities. If we can demonstrate that it works for one or two
cities, I think it will draw many new contributors to OSM.
Anybody can get the data from OSM and convert or enhance it into
something useful. Perhaps someone is doing this already?
--
Lars Aronsson (lars-ABUHZ1rI0YgwFerOooGFRg@xxxxxxxxxxxxxxxx)
Aronsson Datateknik - http://aronsson.se
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