[mkgmap-dev] new branch NOD127

Sun Mar 9 08:26:55 GMT 2014

Hi,

On Thu, Mar 06, Gerd Petermann wrote:

> Hi all,
> 
> I've created a new branch NOD127 :
> http://www.mkgmap.org.uk/download/mkgmap-NOD127-r3086.zip
> 
> This is used to test the latest findings regarding the NOD file format.
> Most of it is understood now, thanks to Steve and his display tool :-) 

I made quite some tests the last two days with it.

In principle the result is much better then with trunk, but
sometimes I see really bad choices, like leaving a highway
and using a primary/secondary street only to go back to the
highway a little bit later. Or using highways which are much
longer then the direct highway.
What I found out: this happens always if the direct route
would cross a tile border.
And I'm not sure if this is really only a problem of the branch,
because I can now see similar problems on trunk, too :(

I have two styles: "streets", which contains only bigger routes
and very few POIs, thus has really big tiles. Here the routing
is very good.
The second style, "basemap", contains all streets and a huge amount
of POIs, thus small tiles. Here I suddenly see similar problems.
So looks like at some point we introduced a problem with routing
via tile borders, at least with MapSource.
I'm currently trying to find out when this got worse.

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)