[mkgmap-dev] mergeroads branch

Fri Sep 13 18:41:59 BST 2013

okay, I quickly checked out some routes - but so far only in Mapsource. 
Seems the long distance routing on the branch is quite a lot better than 
with the old patch.
E.g. same route calculated but on 1. try instead of 3. try. And 165 
instead of 181 intersections (or better directions in Mapsource routing 
list). Other times different ways chosen - in general same way but less 
intersections.

On the unpatched trunk ,the routing was even a little worse. So far - 
but this is really no decent analysis - good work.
On 08.09.2013 14:01, WanMil wrote:
> Hi,
>
> the mergeroads branch should be stable now so I invite all to test it.
>
> Here are the changes compared to trunk:
>
> * Roads now become merged before the routing network is created. This
> might improve routing on long distances (I have seen some). The number
> of roads in the routing network is reduced by 10-20% (in germany).
>
> * refs are now composed in the style sheet and not in java code. The new
> tag mkgmap:ref is used for that (see inc/refs in default style).
>
> * access restrictions are now also handled in the style sheet and not in
> java code. There are some new tags for that:
> mkgmap:access:emergency
> mkgmap:access:delivery
> mkgmap:access:car
> mkgmap:access:bus
> mkgmap:access:taxi
> mkgmap:access:foot
> mkgmap:access:bike
> mkgmap:access:truck
> mkgmap:access:carpool
> If a tag is set to 'no' the given access type is restricted in the map.
> All other values are mapped to 'yes'.
> I have tried to convert the java code to the style sheet. This was quite
> complicated but I hope it's rather correct. See new include file inc/access.
>
> * Instead of using hardcoded rules for maxspeed it is now possible to
> control that via style file. Set the mkgmap:road-speed-class tag to the
> desired class value (0 to 7) and use the new functions maxspeedkmh() and
> maxspeedmph() to parse the maxspeed tag.
>
> * Two new actions that seems useful to me:
> echotags 'Hello'
> prints out the OSM element id plus all tags of the element plus the
> text. This seems to be useful for style debugging.
>
> deletealltags
> removes all tags from an element and therefore stops its processing.
>
>
> I would be happy to get a lot of feedback!
>
> Have fun!
> WanMil
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