[mkgmap-dev] Style work-around to longer routing

Tue Nov 10 00:08:21 GMT 2009

Clinton Gladstone wrote:
> On Nov 9, 2009, at 8:27, Du Plessis, Bennie wrote:
>
>> > BTW I found a style file work around to increase routing distance.
>> > 
>> > Where my map’s max was 1400km before I can now route up to 2200km, 
>> by simply
>> > upgrading the road-class of the major long distance connector roads. 
>>  
>> I added the following to the lines stylefile
>> after the line
>>  
>> highway=motorway {add oneway = yes; add bicycle = no; add foot = no } 
>> [0x01 road_class=4 road_speed=6 resolution 12]
>>  
>> *#handling specific long distance connector routes*
>> *highway=trunk & (ref=N1|ref=N2|ref=N3|ref=N4) [0x02 road_class=4 
>> road_speed=5 resolution 12]*
>
I would guess you would get even better routing using
highway=motorway {add oneway = yes; add bicycle = no; add foot = no } 
[0x01 road_class=4 road_speed=7 resolution 12]
*highway=trunk & (ref=N1|ref=N2|ref=N3|ref=N4)                         
[0x02 road_class=4 road_speed=6 resolution 12]
**highway=trunk                                                         
[0x02 road_class=4 road_speed=5 resolution 12]

I'ld actually go so far to put all road_class=4 and road_speed=7 - 
though then you're estimated arrival times will get a bit quick..

cGpsMapper manual should not be trusted regarding their proposals - best 
is trial and error but changing few variables at a time.
*
> Thanks. I'll try this out. The cGPSMapper manual contains the 
> following fairly obscure statement:
>
>   ...it is important to prepare data with non broken road network 
> keeping specific road class...
>
> This might be related to the reason for your longer routing distances.
>
> Cheers.
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>
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