[talk-ph] talk-ph Digest, Vol 24, Issue 4

Frank Woolf frank at frankwoolf.com
Sun Jul 4 12:47:23 BST 2010


I have been concentrating on Samal Island in the Davao Gulf just  
offshore from Davao City and have done a few farm roads around Davao  
on the mainland.  Samal Island only had a few roads on the map but I  
have been able to add most of the existing roads.  Most is dirt track  
roads - even the main highways so I do most by driving my old Land  
Cruiser and using the tracks from the GPS.

I do have a problem that maybe somebody can help me with.  Access to  
Samal Island with a vehicle is via vehicular ferry. I have tried may  
ways to define the ferry route but no matter what I do the GPS will  
not navigate if I select a destination that includes crossing from the  
mainland to the island or visa versa.  Can anyone suggest what to do?

I have been in Hong Kong for a few weeks but hope to get back to Davao  
in a week or two and continue with the map.


On 4 Jul 2010, at 7:01 PM, talk-ph-request at openstreetmap.org wrote:

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> Today's Topics:
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>   1. Re: better ways to coordinate coastline mapping? (maning sambale)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 4 Jul 2010 17:48:48 +0800
> From: maning sambale <emmanuel.sambale at gmail.com>
> To: Eugene Alvin Villar <seav80 at gmail.com>
> Cc: osm-ph <talk-ph at openstreetmap.org>
> Subject: Re: [talk-ph] better ways to coordinate coastline mapping?
> Message-ID:
> 	<AANLkTimGWEKRoBuImSbSxqUHd6i6zsdHx1hMOEGIQe16 at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> I can load it in my public dropbox.
>
> On Sun, Jul 4, 2010 at 2:23 PM, Eugene Alvin Villar  
> <seav80 at gmail.com> wrote:
>> Hi guys,
>>
>> Once we are done with the large islands, the next step is to do the  
>> smaller
>> islands. Ian Haylock has helpfully provided the PGS coastlines[1]  
>> for the
>> Philippines last year[2] which he edited to combine ways. PGS  
>> itself was
>> automatically generated by a software by analyzing the Landsat  
>> imagery.
>> Unfortunately, Ian's file was hosted on a free file server and has  
>> now
>> expired but I think several people on the mailing list managed to  
>> download
>> it.
>>
>> I tried opening the file last year in Merkaartor but my old laptop  
>> couldn't
>> handle the data. Now that I have a 4GB-RAM laptop, loading the data  
>> into
>> Merkaartor is very manageable. Using the PGS coastlines is much,  
>> much easier
>> than tracing Landsat by hand. I tried this with Homonhon Island and  
>> editing
>> is way faster than actually uploading it[3]. Hehehe. What I did was  
>> to
>> delete the SRTM-derived coastline[4] and replace it with the PGS
>> coastline[5].
>>
>> I think uploading the PGS coastlines is better for the smaller  
>> islands. I'll
>> see what we can do to have the PGS coastlines (55MB) uploaded  
>> somewhere.
>>
>> [1] http://wiki.openstreetmap.org/wiki/Prototype_Global_Shoreline
>> [2] http://lists.openstreetmap.org/pipermail/talk-ph/2009-June/001071.html
>> [3] http://www.openstreetmap.org/browse/changeset/5129873
>> [4] http://www.openstreetmap.org/browse/way/4327906
>> [5] http://www.openstreetmap.org/browse/way/65592780
>>
>> Eugene
>>
>>
>> On Thu, Jun 17, 2010 at 8:20 PM, maning sambale <emmanuel.sambale at gmail.com 
>> >
>> wrote:
>>>
>>> UPDATE. Only two islands from the top ten need some coasty  
>>> coastline love.
>>>
>>> http://wiki.openstreetmap.org/wiki/WikiProject_Philippines/Coastline_Corrections
>>>
>>> Anyone working on Negros and Mainland Mindanao?
>>>
>>
>>
>
>
>
> -- 
> cheers,
> maning
> ------------------------------------------------------
> "Freedom is still the most radical idea of all" -N.Branden
> wiki: http://esambale.wikispaces.com/
> blog: http://epsg4253.wordpress.com/
> ------------------------------------------------------
>
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> End of talk-ph Digest, Vol 24, Issue 4
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