[talk-ph] better ways to coordinate coastline mapping?

[maning sambale]

In some cases, we tend to forget the coastline way direction rule
"Left-side of the way direction should be land (or counterclockwise
around the island) ".  The garmin map compiler detects this and
correct them accordingly in the local file.

You can then correct them in osm by looking at my debugging report:
http://dl.dropbox.com/u/607635/osm-ph_gps_maps/latest/mkgmap.log.0.txt?dl

You can see a lot of routing error reports.  For coastline direction,
simply search for the "anti-island" text similar to this one below:

2010/07/29 20:04:59 WARNING (Osm5XmlHandler): philippines.osm:
Converting anti-island starting at
http://www.openstreetmap.org/?mlat=11.48024&mlon=119.65369&zoom=17
into an island as it is surrounded by water
2010/07/29 20:04:59 WARNING (Osm5XmlHandler): philippines.osm:
Converting anti-island starting at
http://www.openstreetmap.org/?mlat=9.31636&mlon=117.94467&zoom=17 into
an island as it is surrounded by water
2010/07/29 20:05:00 WARNING (Osm5XmlHandler): philippines.osm:
Converting anti-island starting at
http://www.openstreetmap.org/?mlat=5.38158&mlon=120.30581&zoom=17 into
an island as it is surrounded by water

Copy the url (i. e.
http://www.openstreetmap.org/?mlat=5.38158&mlon=120.30581&zoom=17) to
your favorite editor and reverse the way direction.

PS.  If you see other error reports in the error logs, try correcting
some of them as well. The error blurb should explain the problem.

On Thu, Jul 22, 2010 at 11:25 PM, maning sambale
<emmanuel.sambale at gmail.com> wrote:
> here's how to use the sawtooth webpage and josm
>
> http://vimeo.com/13546210
>
> On Wed, Jul 21, 2010 at 9:48 PM, Eugene Alvin Villar <seav80 at gmail.com> wrote:
>> Nice! The Philippines looks a whole lot less "bloody" since I first put up
>> the webmap. Good work!
>>
>> http://forge.codedgraphic.com/osm/sawtooth_coastlines/
>>
>>
>> On Sun, Jul 18, 2010 at 10:15 PM, maning sambale
>> <emmanuel.sambale at gmail.com> wrote:
>>>
>>> FYI, since we started monitoring the sawtooths, we nuked around 25% of
>>> all jagged coasties
>>> Less a thousand sawtooth segments to go.
>>>
>>> Keep it up guys.
>>>
>>> On Sun, Jul 18, 2010 at 11:26 PM, Eugene Alvin Villar <seav80 at gmail.com>
>>> wrote:
>>> > Thanks to maning's diary entry
>>> > <http://www.openstreetmap.org/user/maning/diary/11240> we're making good
>>> > progress on fixing those sawtooth coastlines. We are actually getting
>>> > help
>>> > from foreigners (many are Germans) in "cleaning" up our coasts. :-)
>>> >
>>> >
>>> > On Wed, Jul 14, 2010 at 4:02 PM, maning sambale
>>> > <emmanuel.sambale at gmail.com>
>>> > wrote:
>>> >>
>>> >> The top ten islands is almost complete (not in the mandelbrotian
>>> >> sense).
>>> >>
>>> >> I added a new list of coastline bounty in the wiki (11-30 largest
>>> >> islands)
>>> >>
>>> >>
>>> >> http://wiki.openstreetmap.org/wiki/WikiProject_Philippines/Coastline_Corrections#Priorities
>>> >>
>>> >> Please edit the status as you start working on each island.
>>> >>
>>> >> Note that some have a 99% status already, but, it is good for other
>>> >> eyeballs to have a look and comment on the actual %age and status.
>>> >>
>>> >
>>> >
>>>
>>>
>>>
>>> --
>>> cheers,
>>> maning
>>> ------------------------------------------------------
>>> "Freedom is still the most radical idea of all" -N.Branden
>>> wiki: http://esambale.wikispaces.com/
>>> blog: http://epsg4253.wordpress.com/
>>> ------------------------------------------------------
>>
>>
>>
>> --
>> http://vaes9.codedgraphic.com
>>
>
>
>
> --
> cheers,
> maning
> ------------------------------------------------------
> "Freedom is still the most radical idea of all" -N.Branden
> wiki: http://esambale.wikispaces.com/
> blog: http://epsg4253.wordpress.com/
> ------------------------------------------------------
>



-- 
cheers,
maning
------------------------------------------------------
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
------------------------------------------------------