[mkgmap-dev] additional arcs patch

Mon Feb 24 12:00:02 GMT 2014

Hi,

On Thu, Feb 20, Gerd Petermann wrote:

> Hi all,
> 
> attached is a patch for r3065 in the high-prec-coord branch.
> 
> It should improve long distance routing, as it adds additional
> arcs from minor roads to major roads (so called indirect links).
> Maybe the improvement is only seen on the device.
> 
> It would be great to hear some test results (good or bad),
> compared to trunk r3057 and compared to r3065.

I made some comparisations over the weekend with that patch
with my 62s (terrible to look at the route, but MapSource
always failed to create a route at all over this distance):
Fastest route:
Trunk:  444km, 03:53
Branch: 434km, 03:47

Shortest route:
Trunk:  433km, 04:18
Branch: 422km, 04:15

The route is in both cases identical. 
Google has 458 km, 4:019, but uses a different route, so
not compareable.
While the 62s route is the best one on the paper, the google
route is better in reality.

I had also the impression that the trunk is faster in calculating
the route then the branch, but forgot to stop the time.

  Thorsten

-- 
Thorsten Kukuk, Senior Architect SLES & Common Code Base
SUSE LINUX Products GmbH, Maxfeldstr. 5, D-90409 Nuernberg
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg)