[mkgmap-dev] errors in routing

Sat Aug 1 16:58:02 BST 2009

On Aug 1, 2009, at 10:13, Garvan & maew wrote:

> I re-tested a sample I posted before with routing problems, except  
> this time I converted the data to OSM format first, and it has the  
> same problem with routing as I noted in a larger map, and as I  
> explained above.
>
> In the attached sample, snip.osm, if is not possible to route from
>
> N13.10744 E100.92402
>
> To
> N13.09385 E100.91529
>
> Without jumping all over the place (or any points points on these  
> roads).

I did a quick test on a map extract of Asia which I had previously  
compiled. I noted no routing errors between these points.

One thing I found suspicious is that you are routing over a motorway  
with only one lane. The default style automatically adds a oneway  
attribute to all motorways. Could this be related to your routing  
problem?

You may wish to try a style file with the "add oneway" statement  
removed from the following line:

highway=motorway {add oneway = yes; add bicycle = no; add foot = no }  
[0x01 road_class=4 road_speed=6 resolution 12]