[talk-ph] Fwd: [OSM-talk] keepright! goes global

Tue Jul 21 06:36:39 BST 2009

The plane route shoud connect to a road, that's how I understand it.
Same with ferry routes

On 7/21/09, Marloue Pidor <murlwe at mail2engineer.com> wrote:
> Ohh, but I added a flight route from Davao to Manila. Check the data,
> its there but I don't know why it did not appear. So, Technically Davao
> is connected to Manila by plane. I will try to add ferry route to
> Manila. Its a very long route.
>
>
> murlwe
>
> <-----Original Message----->
>>From: Eugene Alvin Villar [seav80 at gmail.com]
>>Sent: 7/21/2009 12:10:35 PM
>>To: totor_osm at yahoo.com
>>Cc: talk-ph at openstreetmap.org
>>Subject: Re: [talk-ph] Fwd: [OSM-talk] keepright! goes global
>>
>>Hi guys,
>>
>>I asked the tool's maintainer how the floating island error is
> determined.
>>Here's his answer:
>>http://lists.openstreetmap.org/pipermail/talk/2009-July/038800.html
>>
>>I've reprinted it here below for convenience:
>>
>>
>>The motto of this check is "you can go everywhere from everywhere".
>>
>>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.
>>
>>There are 30 starting points all over the world, one of them in Manila.
>>
>>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.
>>
>>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.
>>
>>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.
>>
>>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.
>>
>>
>>Eugene / seav
>>
>>
>>
>>
>>On Mon, Jul 20, 2009 at 11:13 PM, Totor Osm <totor_osm at yahoo.com>
> wrote:
>>
>>
>>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)?
>>
>>I'll try to connect them tomorrow.
>>
>>
>>--- On Mon, 7/20/09, Eugene Alvin Villar <seav80 at gmail.com> wrote:
>>
>>> From: Eugene Alvin Villar <seav80 at gmail.com>
>>
>>> Subject: Re: [talk-ph] Fwd: [OSM-talk] keepright! goes global
>>> To: "Totor Osm" <totor_osm at yahoo.com>
>>> Cc: "Openstreetmap.ph.mailing.list" <talk-ph at openstreetmap.org>
>>> Date: Monday, July 20, 2009, 2:53 PM
>>
>>> Ack!
>>>
>>> I've done a quick look around and it seems that the
>>> general Luzon road network is the only one not riddled with
>>> these errors!
>>>
>>>
>>> On Mon, Jul 20, 2009 at 10:51 PM,
>>> Eugene Alvin Villar <seav80 at gmail.com>
>>> wrote:
>>>
>>> Hi Totor,
>>>
>>> George also replied asking what these floating island
>>> errors mean.
>>>
>>> As far as I understand it, it means that there is a small
>>> network of navigable ways that is not connected to the rest
>>> of the network. It does detect "islands" in Metro
>>> Manila but I'm quite surprised to find that it seems to
>>> think that the Cebu road network is one big error! Maybe a
>>> few ferry routes would fix it?
>>>
>>>
>>>
>>> I'll ask the creator of keep right. I don't think
>>> he anticipated archipelagos. Hehehe.
>>>
>>> Eugene / seav
>>>
>>>
>>> On Mon, Jul 20, 2009 at 10:43 PM,
>>> Totor Osm <totor_osm at yahoo.com>
>>> wrote:
>>>
>>>
>>>
>>>
>>>
>>>
>>> Great,
>>>
>>>
>>>
>>> but,ehr, could it be that Cebu is just one big floating
>>> island ???
>>>
>>>
>>>
>>>
>>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
>>>
>>>
>>>
>>>
>>>
>>> Whats wrong with the orange arrows? The nodes of the
>>> intersections look ok to me...
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> --- On Sun, 7/19/09, Eugene Alvin Villar <seav80 at gmail.com>
>>> wrote:
>>>
>>>
>>>
>>> > From: Eugene Alvin Villar <seav80 at gmail.com>
>>>
>>> > Subject: [talk-ph] Fwd: [OSM-talk] keepright! goes
>>> global
>>>
>>> > To: "OSM" <talk-ph at openstreetmap.org>
>>>
>>> > Date: Sunday, July 19, 2009, 4:21 PM
>>>
>>> > Hi guys,
>>>
>>> >
>>>
>>> > The keepright! QA tool for OSM just went almost
>>> global.
>>>
>>> > Previously this tool was only enabled for Europe. This
>>> tool
>>>
>>> > highlights spatial errors (such as overlapping
>>> unconnected
>>>
>>> > ways that have no layer tags to separate them), and
>>> tagging
>>>
>>> > errors (such as POIs without a name tag).
>>>
>>> >
>>>
>>> >
>>>
>>> > Here's a URL centered at the Makati CBD:
>>>
>>> >
>>>
>>> >
>>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
> =
>>
>>=== message truncated ===
>
>
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-- 
cheers,
maning
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