<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 12pt;
font-family:Calibri
}
--></style></head>
<body class='hmmessage'><div dir='ltr'>Hi WanMil,<br><br>the reason is that we have multiple OSM ways with the name Rosewood,<br>and RoadMerger doesn't merge them all to a single way.<br>So, a list of roads with the name Rosewood is processed<br>against a list of housenumbers.<br>Now, e.g. the node 427882156 with number 170<br>is closer to the OSM way 29272180 than to <br>way 29272175, which would be the better match<br>when you notice the addr:interpolation way.<br><br>Same happens with other nodes, so that some <br>road segments get only one number instead of two.<br>As a result, the map doesn't contain enough <br>information for a good interpolation.<br><br>The patched version is a bit better although it<br>doesn't solve the initial problem, it just adds <br>more data so that each road segement has at least<br>a few correct numbers.<br>Maybe I find a way to code a plausibilty test<br>for the numbers, I need something like that also <br>for the addr:place evaluation.<br><br>Gerd<br><br><div>> Date: Sat, 20 Dec 2014 13:45:44 +0100<br>> From: wmgcnfg@web.de<br>> To: mkgmap-dev@lists.mkgmap.org.uk<br>> Subject: Re: [mkgmap-dev] [Patch v2] addr:interpolation<br>> <br>> Hi Gerd,<br>> <br>> I didn't expect a big improvement by supporting addr:interpolation. <br>> There are only few things I can imagine:<br>> * addr:interpolation is tagged with addr:street but the nodes with <br>> addr:housenumber are not tagged with addr:street<br>> * addr:interpolation span over more than one street segment<br>> <br>> I am curious about your results!<br>> <br>> WanMil<br>> <br>> > Hi Carlos,<br>> ><br>> > thanks for the feedback.<br>> > I must confess that I was a bit surprised about the improvement.<br>> > In other words, I thought that I might have found an error<br>> > in the existing code, so I started to look closer at the<br>> > HousenumberGenerator,<br>> > also because of the addr:place problem.<br>> ><br>> > @WanMil: Do you have a good explanation for the improvement?<br>> ><br>> > Gerd<br>> ><br>> > > Date: Fri, 19 Dec 2014 10:37:07 +0100<br>> > > From: cdavilam@orangecorreo.es<br>> > > To: mkgmap-dev@lists.mkgmap.org.uk<br>> > > Subject: Re: [mkgmap-dev] [Patch v2] addr:interpolation<br>> > ><br>> > > El 09/12/14 a las 16:38, Gerd Petermann escribió:<br>> > > > Hi all,<br>> > > ><br>> > > > attached is v2.<br>> > > > It turned out to be quite complicated to interpret the data<br>> > > > provided with this tag, and I found only few places were this<br>> > > > helps to provide better data. On the other hand, I see no negative<br>> > > > effects besides the additional code complexity.<br>> > > ><br>> > > > A good place to see how address search is improved is here:<br>> > > > http://www.openstreetmap.org/way/36787892#map=17/51.88859/-8.57449<br>> > > ><br>> > > > With the trunk version, a search for 178 Rosewood lists several<br>> > numbers,<br>> > > > e.g. 184, 170, 199 and so on. None is really correct.<br>> > > > The patched version shows exactly one entry, which is probably very<br>> > close.<br>> > > > Same result with other numbers which do not appear as housenumbers.<br>> > > ><br>> > > > A patched binary based on r3366 is here:<br>> > > > |http://files.mkgmap.org.uk/download/236/mkgmap.jar<br>> > > ><br>> > > > |Gerd<br>> > > ><br>> > > I tested your patch on a different area than the one you suggest and it<br>> > > really improves house number search.<br>> > > _______________________________________________<br>> > > mkgmap-dev mailing list<br>> > > mkgmap-dev@lists.mkgmap.org.uk<br>> > > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev<br>> ><br>> ><br>> > _______________________________________________<br>> > mkgmap-dev mailing list<br>> > mkgmap-dev@lists.mkgmap.org.uk<br>> > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev<br>> ><br>> <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>
</html>