[mkgmap-dev] PATCH v2: hwayCount

Fri Feb 15 09:57:07 GMT 2013

Hi Felix,

I think I've found the reason for the problems (increased img size)

Your style file probably contains many continue statements. This leads to
the following
situation:
the same OSM way is added multiple times to the road network. 
For each node of a road, the highway count is increased. For a road that
appears
twice or more often, that means that all nodes will become routing nodes,
not only those nodes that are also used in other streets.
In the trunk version, this doesn't happen because each way is only counted
once (but
also ways that will not be added as roads)

It is easy to fix that problem, but I still have no idea why routing breaks
with the patch
(in the default style we don't add roads multiple times)

Attached is the corrected patch.

highwayCount_v2.patch
<http://gis.19327.n5.nabble.com/file/n5749522/highwayCount_v2.patch>  

Gerd

Felix Hartmann-2 wrote
> Smaller?
> 
> For me my austria map size increased from 295MB to 345MB...
> 
> 
> Routing over long distances is not working at all anymore (much much 
> worse to before).
> Don't have time (need to sleep) to find out if any roads become 
> unroutable though...
> On 07.02.2013 22:25, GerdP wrote:
>> Hi ,
>>
>> attached is a patch that reduces the img size.
>> Up to now, mkgmap created many so called CoordNodes when
>> a road and e.g. a building shared an OSM node.
>> This is not needed and was not intended. As far as I know
>> it just blows up the size of the img file (typically ~500kb for each
>> tile).
>>
>> The patch reduces the amount of CoordNodes and
>> also cleans some dead code around the highwayCount.
>>
>> Please test if you see  any (new) routing problems with this
>> patch, I tried quite a while and found none in BaseCamp.
>>
>> highwayCount_v1.patch
>> &lt;http://gis.19327.n5.nabble.com/file/n5748554/highwayCount_v1.patch&gt;
>>
>> Gerd
>>
>>
>>
>> --
>> View this message in context:
>> http://gis.19327.n5.nabble.com/PATCH-v1-highwayCount-tp5748554.html
>> Sent from the Mkgmap Development mailing list archive at Nabble.com.
>> _______________________________________________
>> mkgmap-dev mailing list
>> 

> mkgmap-dev at .org

>> http://lists.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> 
> -- 
> keep on biking and discovering new trails
> 
> Felix
> openmtbmap.org & www.velomap.org
> 
> _______________________________________________
> mkgmap-dev mailing list

> mkgmap-dev at .org

> http://lists.mkgmap.org.uk/mailman/listinfo/mkgmap-dev

--
View this message in context: http://gis.19327.n5.nabble.com/PATCH-v1-highwayCount-tp5748554p5749522.html
Sent from the Mkgmap Development mailing list archive at Nabble.com.