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<body class='hmmessage'><div dir='ltr'>Hi Thorsten,<br><br>my findings are different, but the overall result was that the<br>patch doesn't improve routing at this stage.<br>We have a known error (or call it difference) in the <br>calculation of an important value that identifies good<br>routes, so the patch probably just adds more wrong<br>information in several cases.<br>Investigating...<br><br>Gerd<br><br><br><div>> Date: Mon, 24 Feb 2014 13:00:02 +0100<br>> From: kukuk@suse.de<br>> To: mkgmap-dev@lists.mkgmap.org.uk<br>> Subject: Re: [mkgmap-dev] additional arcs patch<br>> <br>> <br>> Hi,<br>> <br>> On Thu, Feb 20, Gerd Petermann wrote:<br>> <br>> > Hi all,<br>> > <br>> > attached is a patch for r3065 in the high-prec-coord branch.<br>> > <br>> > It should improve long distance routing, as it adds additional<br>> > arcs from minor roads to major roads (so called indirect links).<br>> > Maybe the improvement is only seen on the device.<br>> > <br>> > It would be great to hear some test results (good or bad),<br>> > compared to trunk r3057 and compared to r3065.<br>> <br>> I made some comparisations over the weekend with that patch<br>> with my 62s (terrible to look at the route, but MapSource<br>> always failed to create a route at all over this distance):<br>> Fastest route:<br>> Trunk: 444km, 03:53<br>> Branch: 434km, 03:47<br>> <br>> Shortest route:<br>> Trunk: 433km, 04:18<br>> Branch: 422km, 04:15<br>> <br>> The route is in both cases identical. <br>> Google has 458 km, 4:019, but uses a different route, so<br>> not compareable.<br>> While the 62s route is the best one on the paper, the google<br>> route is better in reality.<br>> <br>> I had also the impression that the trunk is faster in calculating<br>> the route then the branch, but forgot to stop the time.<br>> <br>> Thorsten<br>> <br>> -- <br>> Thorsten Kukuk, Senior Architect SLES & Common Code Base<br>> SUSE LINUX Products GmbH, Maxfeldstr. 5, D-90409 Nuernberg<br>> GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg)<br>> _______________________________________________<br>> mkgmap-dev mailing list<br>> mkgmap-dev@lists.mkgmap.org.uk<br>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev<br></div> </div></body>
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