Hi guys,<br><br>I asked the tool's maintainer how the floating island error is determined. Here's his answer: <a href="http://lists.openstreetmap.org/pipermail/talk/2009-July/038800.html">http://lists.openstreetmap.org/pipermail/talk/2009-July/038800.html</a><br>
<br>I've reprinted it here below for convenience:<br><br><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote"><font size="1">The motto of this check is "you can go everywhere from everywhere".<br>
<br>
There is a set of starting points (highways in the center of big cities
that are well connected to many other streets) I picked randomly. The
check finds ways that are connected to these ways and thus finds a
(bigger) set of ways. This procedure is repeated until no more ways are
found. Any way that was not found is a floating island.<br><br>
There are 30 starting points all over the world, one of them in Manila.<br><br>
Please note that the check will follow any highway and ferries are
included, so it _should_ find islands as long as there's a ferry
connected to a highway on the island.</font></blockquote><div><br>So it seems that everything not connected to the main streets of Metro Manila is considered as a "floating island". Mindoro is covered since there is a ferry route from Batangas to Puerto Galera. I think if we can at least sketch out the Ro-Ro routes, we can cover most of the major island. I will also suggest adding Cebu and Davao cities as seeds to minimize problems.<br>
<br>However, this will not cover all the islands (there are about 2,000 inhabited islands out of 7,100+ and not all of them have regular ferry routes [like Batanes (?) which is served by flights]) so this means that we cannot rely on keep right to point out all floating island errors. I think a customized QA tool for the Philippines would be needed. <br>
<br>I hope this helps! In the meantime, just uncheck this error and ignore it until we can have a backbone connection for the Philippines and more seeds.<br><br><br>Eugene / seav<br><br></div>
<br><div class="gmail_quote">On Mon, Jul 20, 2009 at 11:13 PM, Totor Osm <span dir="ltr"><<a href="mailto:totor_osm@yahoo.com">totor_osm@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
I saw some blue arrows indicating 2 roads are close, but not conneected. In Cebu this is the case near Car-Car in the south, and also in the north of Cebu Island. Maybe this could be the reason for the "island" warning on other intersections (Not connected to the world, because of these gaps)?<br>
<br>
I'll try to connect them tomorrow.<br>
<div class="im"><br>
--- On Mon, 7/20/09, Eugene Alvin Villar <<a href="mailto:seav80@gmail.com">seav80@gmail.com</a>> wrote:<br>
<br>
> From: Eugene Alvin Villar <<a href="mailto:seav80@gmail.com">seav80@gmail.com</a>><br>
</div>> Subject: Re: [talk-ph] Fwd: [OSM-talk] keepright! goes global<br>
> To: "Totor Osm" <<a href="mailto:totor_osm@yahoo.com">totor_osm@yahoo.com</a>><br>
> Cc: "Openstreetmap.ph.mailing.list" <<a href="mailto:talk-ph@openstreetmap.org">talk-ph@openstreetmap.org</a>><br>
> Date: Monday, July 20, 2009, 2:53 PM<br>
<div><div></div><div class="h5">> Ack!<br>
><br>
> I've done a quick look around and it seems that the<br>
> general Luzon road network is the only one not riddled with<br>
> these errors!<br>
><br>
><br>
> On Mon, Jul 20, 2009 at 10:51 PM,<br>
> Eugene Alvin Villar <<a href="mailto:seav80@gmail.com">seav80@gmail.com</a>><br>
> wrote:<br>
><br>
> Hi Totor,<br>
><br>
> George also replied asking what these floating island<br>
> errors mean.<br>
><br>
> As far as I understand it, it means that there is a small<br>
> network of navigable ways that is not connected to the rest<br>
> of the network. It does detect "islands" in Metro<br>
> Manila but I'm quite surprised to find that it seems to<br>
> think that the Cebu road network is one big error! Maybe a<br>
> few ferry routes would fix it?<br>
><br>
><br>
><br>
> I'll ask the creator of keep right. I don't think<br>
> he anticipated archipelagos. Hehehe.<br>
><br>
> Eugene / seav<br>
><br>
><br>
> On Mon, Jul 20, 2009 at 10:43 PM,<br>
> Totor Osm <<a href="mailto:totor_osm@yahoo.com">totor_osm@yahoo.com</a>><br>
> wrote:<br>
><br>
><br>
><br>
><br>
><br>
><br>
> Great,<br>
><br>
><br>
><br>
> but,ehr, could it be that Cebu is just one big floating<br>
> island ???<br>
><br>
><br>
><br>
> <a href="http://keepright.ipax.at/report_map.php?db=osm_XD&zoom=14&lat=10.35578&lon=123.92528&layers=B0T&ch30=1&ch40=1&ch50=1&ch60=1&ch70=1&ch90=1&ch100=1&ch110=1&ch120=1&ch130=1&ch150=1&ch160=1&ch170=1&ch180=1&ch191=1&ch192=1&ch193=1&ch194=1&ch201=1&ch202=1&ch203=1&ch204=1&ch210=1&ch220=1&show_ign=1&show_tmpign=1" target="_blank">http://keepright.ipax.at/report_map.php?db=osm_XD&zoom=14&lat=10.35578&lon=123.92528&layers=B0T&ch30=1&ch40=1&ch50=1&ch60=1&ch70=1&ch90=1&ch100=1&ch110=1&ch120=1&ch130=1&ch150=1&ch160=1&ch170=1&ch180=1&ch191=1&ch192=1&ch193=1&ch194=1&ch201=1&ch202=1&ch203=1&ch204=1&ch210=1&ch220=1&show_ign=1&show_tmpign=1</a><br>
><br>
><br>
><br>
><br>
><br>
> Whats wrong with the orange arrows? The nodes of the<br>
> intersections look ok to me...<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> --- On Sun, 7/19/09, Eugene Alvin Villar <<a href="mailto:seav80@gmail.com">seav80@gmail.com</a>><br>
> wrote:<br>
><br>
><br>
><br>
> > From: Eugene Alvin Villar <<a href="mailto:seav80@gmail.com">seav80@gmail.com</a>><br>
><br>
> > Subject: [talk-ph] Fwd: [OSM-talk] keepright! goes<br>
> global<br>
><br>
> > To: "OSM" <<a href="mailto:talk-ph@openstreetmap.org">talk-ph@openstreetmap.org</a>><br>
><br>
> > Date: Sunday, July 19, 2009, 4:21 PM<br>
><br>
> > Hi guys,<br>
><br>
> ><br>
><br>
> > The keepright! QA tool for OSM just went almost<br>
> global.<br>
><br>
> > Previously this tool was only enabled for Europe. This<br>
> tool<br>
><br>
> > highlights spatial errors (such as overlapping<br>
> unconnected<br>
><br>
> > ways that have no layer tags to separate them), and<br>
> tagging<br>
><br>
> > errors (such as POIs without a name tag).<br>
><br>
> ><br>
><br>
> ><br>
><br>
> > Here's a URL centered at the Makati CBD:<br>
><br>
> ><br>
><br>
> > <a href="http://keepright.ipax.at/report_map.php?db=osm_XD&zoom=15&lat=14.55284&lon=121.02068&layers=B0T&ch30=1&ch40=1&ch50=1&ch60=1&ch70=1&ch90=1&ch100=1&ch110=1&ch120=1&ch130=1&ch150=1&ch160=1&ch170=1&ch180=1&ch191=1&ch192=1&ch193=1&ch194=1&ch201=1&ch202=1&ch203=1&ch204=1&ch210=1&ch220=1&show_ign=1&show_tmpign=1" target="_blank">http://keepright.ipax.at/report_map.php?db=osm_XD&zoom=15&lat=14.55284&lon=121.02068&layers=B0T&ch30=1&ch40=1&ch50=1&ch60=1&ch70=1&ch90=1&ch100=1&ch110=1&ch120=1&ch130=1&ch150=1&ch160=1&ch170=1&ch180=1&ch191=1&ch192=1&ch193=1&ch194=1&ch201=1&ch202=1&ch203=1&ch204=1&ch210=1&ch220=1&show_ign=1&show_tmpign=1</a><br>
><br>
><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > Just pan around to see more errors. Only 100 errors<br>
> are<br>
><br>
> > shown at a time.<br>
><br>
> ><br>
><br>
> > A few reminders:<br>
><br>
> > 1. There may be false positives. Report it to the<br>
> tool<br>
><br>
> > maintainer.<br>
><br>
> > 2. The data is not real time! Errors are based on the<br>
><br>
> > weekly data dump. So if you correct the error, it will<br>
> still<br>
><br>
> > be reported until the next data dump is imported by<br>
> the<br>
><br>
> > tool.<br>
><br>
> ><br>
><br>
> ><br>
><br>
> > Have fun!<br>
><br>
> ><br>
><br>
> ><br>
><br>
> > ---------- Forwarded message<br>
><br>
> > ----------<br>
><br>
> > From: Harald Kleiner <<a href="mailto:e9625163@gmx.at">e9625163@gmx.at</a>><br>
><br>
> ><br>
><br>
> > Date: Sun, Jul 19, 2009 at 6:53 PM<br>
><br>
> > Subject: [OSM-talk] keepright! goes global<br>
><br>
> > To: OSM Talk <<a href="mailto:talk@openstreetmap.org">talk@openstreetmap.org</a>><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > ...well, almost.<br>
><br>
> ><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > From now on, the site<br>
><br>
> ><br>
><br>
> > <a href="http://keepright.ipax.at" target="_blank">http://keepright.ipax.at</a><br>
><br>
> ><br>
><br>
> > will provide data consistency checks not only for<br>
> Europe<br>
><br>
> > but also for<br>
><br>
> ><br>
><br>
> > Africa, Asia and South America.<br>
><br>
> ><br>
><br>
> > Australia is already covered by the keepright partner<br>
> site<br>
><br>
> > at<br>
><br>
> ><br>
><br>
> > <a href="http://keepright.x10hosting.com/" target="_blank">http://keepright.x10hosting.com/</a><br>
><br>
> ><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > What's still missing in the list is North<br>
> America.<br>
><br>
> > Volunteers who want<br>
><br>
> ><br>
><br>
> > to donate computing power are welcome to join. All you<br>
> need<br>
><br>
> > is a<br>
><br>
> ><br>
><br>
> > medium-sized PC running Linux and a little bit of time<br>
> to<br>
><br>
> > manage running<br>
><br>
> ><br>
><br>
> > the program.<br>
><br>
> ><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > Have a nice weekend!<br>
><br>
> ><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > Harald<br>
><br>
> ><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > _______________________________________________<br>
><br>
> ><br>
><br>
> > talk mailing list<br>
><br>
> ><br>
><br>
> > <a href="mailto:talk@openstreetmap.org">talk@openstreetmap.org</a><br>
><br>
> ><br>
><br>
> > <a href="http://lists.openstreetmap.org/listinfo/talk" target="_blank">http://lists.openstreetmap.org/listinfo/talk</a><br>
><br>
> ><br>
><br>
> ><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > --<br>
><br>
> > <a href="http://vaes9.codedgraphic.com" target="_blank">http://vaes9.codedgraphic.com</a><br>
><br>
> ><br>
><br>
> ><br>
><br>
> > -----Inline Attachment Follows-----<br>
><br>
> ><br>
><br>
> > _______________________________________________<br>
><br>
> > talk-ph mailing list<br>
><br>
> > <a href="mailto:talk-ph@openstreetmap.org">talk-ph@openstreetmap.org</a><br>
><br>
> > <a href="http://lists.openstreetmap.org/listinfo/talk-ph" target="_blank">http://lists.openstreetmap.org/listinfo/talk-ph</a><br>
><br>
> ><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> _______________________________________________<br>
><br>
> talk-ph mailing list<br>
><br>
> <a href="mailto:talk-ph@openstreetmap.org">talk-ph@openstreetmap.org</a><br>
><br>
> <a href="http://lists.openstreetmap.org/listinfo/talk-ph" target="_blank">http://lists.openstreetmap.org/listinfo/talk-ph</a><br>
><br>
><br>
><br>
><br>
> --<br>
> <a href="http://vaes9.codedgraphic.com" target="_blank">http://vaes9.codedgraphic.com</a><br>
><br>
><br>
><br>
><br>
> --<br>
> <a href="http://vaes9.codedgraphic.com" target="_blank">http://vaes9.codedgraphic.com</a><br>
><br>
><br>
> -----Inline Attachment Follows-----<br>
><br>
> _______________________________________________<br>
> talk-ph mailing list<br>
> <a href="mailto:talk-ph@openstreetmap.org">talk-ph@openstreetmap.org</a><br>
> <a href="http://lists.openstreetmap.org/listinfo/talk-ph" target="_blank">http://lists.openstreetmap.org/listinfo/talk-ph</a><br>
><br>
<br>
<br>
<br>
<br>
<br>
_______________________________________________<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><a href="http://vaes9.codedgraphic.com">http://vaes9.codedgraphic.com</a><br>