marcus.bauer at gmail.com
Thu Dec 10 15:57:51 CET 2009
On Thu, 10 Dec 2009 01:03:01 +0100
Fox Mulder <Quakeman1 at gmx.net> wrote:
> So if something should be changed, than it should be tangogps and
> allother apps that uses png files to use a vector format like navit
> does which is way better for this purpose.
Yes, and the earth is flat too ;-)
As it was already pointed out in this thread navit uses vector data and
tangogps uses bitmap data.
Vector data allows for calculation of a route. As long as you use only
very basic data it is more space efficient. If you add terrain data
like opencyclemap or maps-for-free then you have quickly many
times more data and on-the-fly rendering on an embedded device becomes
Using bitmap data means it is fast because you only need to display data
while a fast computer has been doing a nice rendering.
Another example: in Italy there is currently the import of houses going
on, i.e. you get a good idea of the streets with the bitmaps while you
get emptiness with the vector data.
tangogps is far superior in speed, quality of maps and choice of maps.
However in-car navigation is currently not its purpose. But for hiking
or cycling it offers much better map data.
More information about the community