Hi WanMil, unfortunately the curviness() function does not work as expected yet. I can try to help to analyse it, may I have a look at the source code anywhere? The function alone would be enough
Thanks and cheers Manfred PS: please find detailed analysis in my mail from July 3 > Gesendet: Donnerstag, 03. Juli 2014 um 20:49 Uhr > Von: WanMil <wmgc...@web.de> > An: "Development list for mkgmap" <mkgmap-dev@lists.mkgmap.org.uk> > Betreff: Re: [mkgmap-dev] Curvy routing support: new function? > > I forgot to clean before build... > Here is the new version: http://files.mkgmap.org.uk/detail/216 > > > Hi WanMil, > > > > you are very fast, thank you very much for this! > > However I'm facing some expectations, log: > > java.lang.NoSuchMethodError: > > uk.me.parabola.mkgmap.reader.osm.Way.deleteTag(Ljav > > a/lang/String;)V > > at > > uk.me.parabola.mkgmap.reader.osm.MultiPolygonFinishHook.end(MultiPoly > > gonFinishHook.java:50) > > at > > uk.me.parabola.mkgmap.reader.osm.OsmReadingHooksChain.end(OsmReadingH > > ooksChain.java:79) > > at > > uk.me.parabola.mkgmap.reader.osm.o5m.O5mBinMapDataSource.load(O5mBinM > > apDataSource.java:49) > > at > > uk.me.parabola.mkgmap.reader.osm.OsmMapDataSource.load(OsmMapDataSour > > ce.java:127) > > at > > uk.me.parabola.mkgmap.main.MapMaker.loadFromFile(MapMaker.java:167) > > at uk.me.parabola.mkgmap.main.MapMaker.makeMap(MapMaker.java:63) > > at uk.me.parabola.mkgmap.main.Main$1.call(Main.java:253) > > at uk.me.parabola.mkgmap.main.Main$1.call(Main.java:249) > > at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) > > at java.util.concurrent.FutureTask.run(Unknown Source) > > at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown > > Source) > > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown > > Source) > > at java.lang.Thread.run(Unknown Source) > > > > (I have installed r3310 which works ok, and then replaced mkgmap.jar by > > your build) > > > > I'm open to any suggestions for other logic. A curviness function can only > > be a virtual value, not physical. However it may probably sufficient to > > say, curviness=length()/distance(first_point, last_point)? May be I'm > > thinking too complex :-) > > > > Cheers > > Manfred > > > > > > > >> Gesendet: Dienstag, 01. Juli 2014 um 22:32 Uhr > >> Von: WanMil <wmgc...@web.de> > >> An: "Development list for mkgmap" <mkgmap-dev@lists.mkgmap.org.uk> > >> Betreff: Re: [mkgmap-dev] Curvy routing support: new function? > >> > >> Hi, > >> > >> I remember that it is on my Todo-List :-) > >> > >> So I performed a quick implementation following your suggestion. You can > >> find in the attached patch so that you can play a little bit with it. > >> (Attention: it is completely untested!!) > >> You can find a patched mkgmap.jar at http://files.mkgmap.org.uk/detail/215. > >> > >> I think curviness should to be defined in a different way. > >> 1. Calculate the distance of each point Dmiddle to the virtual line from > >> first to the last point. > >> 2. curviness()=standard mean(Dmiddle/(length to next point + length to > >> previous point) > >> > >> I think this gives a better indication how curviness a road is. But it > >> need to be implemented and tested later on :-) > >> > >> WanMil > >> > >>> Hi all, > >>> > >>> Garmin offers "curvy roads" preferences for their zümo 390 and 590 > >>> devices. > >>> https://buy.garmin.com/en-US/US/on-the-road/motorcycles/zumo-390lm/prod138275.html > >>> I'm thinking about creating motorcycle maps for old 200 series. > >>> Might it be useful to integrate a curviness() function so that mkgmap can > >>> optimize for curvy roads too? It might also help do determine a better > >>> default speed for curvy roads for use with car routing. > >>> > >>> The curviness() value might be the overall absolute turning angle (in > >>> degrees) of a road segment divided by the segment's length. > >>> > >>> What's your opinion? > >>> > >>> Cheers > >>> Manfred > >>> > >>> > >>> > >>> > >>> Pseudo code might look like this: > >>> > >>> function curviness() > >>> { > >>> oldpoint=points(0) > >>> foreach (point of a way segment as newpoint) > >>> { > >>> d_x=(newpoint.x-oldpoint.x)/360*40000000*COS(newpoint.x*PI()/180) > >>> //in meters > >>> d_y=(newpoint.y-oldpoint.y)/360*40000000 //in meters > >>> length+=sqrt(d_x**2+d_y**2) > >>> angle=arctan(d_y/d_x) > >>> d_angle=abs(angle-old_angle) > >>> sgn_x=sgn(d_x) > >>> sgn_y=sgn(d_y) > >>> if ((sgn_x*sgn_y*old_sgn_x*old_sgn_y)=-1 && (sgn_x!=old_sgn_x)) > >>> d_angle=pi-d_angle // 180 degrees correction, otherwise north-south > >>> roads show strange results > >>> if (point>1) sum_angle+=d_angle > >>> old_angle=angle > >>> oldpoint=newpoint > >>> old_sgn_x=sgn_x > >>> old_sgn_y=sgn_y > >>> } > >>> return sum_angle/length > >>> } > >>> > >>> // perhaps simple multiplication is faster than 4 times sgn() functions? > >>> _______________________________________________ > >>> mkgmap-dev mailing list > >>> mkgmap-dev@lists.mkgmap.org.uk > >>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > >>> > >> > >> _______________________________________________ > >> mkgmap-dev mailing list > >> mkgmap-dev@lists.mkgmap.org.uk > >> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > > _______________________________________________ > > mkgmap-dev mailing list > > mkgmap-dev@lists.mkgmap.org.uk > > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > > > > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
