[mkgmap-dev] Estrange detours

Thu Jan 5 10:39:40 GMT 2017

Current default style produces some estrange detours for a test route in 
a couple of places in my home town (blue circles 1 and 2 in attached 
screenshot). I've tracked the issue down and behavior has been changing 
with mkgmap versions, as detailed in the following chart, being current 
situation worst for this particular case:

	MapSource 6.16.3 	BaseCamp 4.2.5
mkgmap version 	Car 	Truck 	Car 	Truck

	1 	2 	1 	2 	1 	2 	1 	2
<3081 	OK 	OK 	OK 	OK 	OK 	OK 	OK 	OK
3088-3108 	Suboptimal route 	OK 	Loop 	OK 	Loop 	OK 	Loop
 >=3111 	Suboptimal route 	Bad 	Loop 	OK 	Loop 	OK 	Loop

Main changes were introduced with r3081 (merge from the high-prec-coord 
branch) and r3111 (merge from NOD127 branch). Perhaps those changes need 
a review.
All test were done with the following command, only changing mkgmap jar 
file:
java -Xmx600m -ea -jar mkgmap.jar --bounds=bounds.zip --route --latin1 
--code-page=1252 --family-name="Test" --family-id=190 --product-id=1 
--series-name="Test-default" --overview-mapname=55190000 
--mapname=55190000 --index --add-pois-to-areas --link-pois-to-ways 
--location-autofill=is_in,nearest --style=default typ/EUR-190.TYP 
/home/carlos/tmp/test1.osm
Files for test: http://alternativaslibres.org/files/detours.zip
Note that first street after point 1 is tagged hgv=no, otherwise trucks 
would probably take the same suboptimal route than cars since r3081.
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