[talk-ph] excellent work in subic and ormoc

[D Tucny]

2009/1/12 D Tucny <d at tucny.com>

> 2009/1/12 maning sambale <emmanuel.sambale at gmail.com>
>
>> Just found excellent updates in two areas:
>>
>> Subic/Olongapo:
>>
>> http://www.openstreetmap.org/?lat=14.8266&lon=120.2912&zoom=14&layers=0B00FTF
>>
>> It looks like Olongapo is pretty much covered.  The editor is Deck
>> Antonio.
>> @ Deck are you on this list?  Great work!  May I know your data
>> source?  AFAIK, there are no high-res sat in that area.
>> Is this really entirely on gpx?
>> http://www.openstreetmap.org/user/Deck%20Antonio/traces/290144
>> Wow!
>>
>
> I'm very concerned about that to be honest... The GPX file isn't from a GPS
> by the looks of it, it's created by an application called ExpertGPS, and,
> contained within it are panaramio points and descriptions of paths and
> polygons, which together suggest that potentially it was originally a google
> earth exported kml that has been converted with ExpertGPS to a GPX file...
> Google does have high res views of the area... If you download that GPX file
> and open it in google earth, you'll see that the track almost exactly
> followings the road layout and that buildings and areas are an exact match
> to the google imagery... this is BAD...
>

Much of the area was done by user 'Rally', notes made on nodes and ways
as...
contributor='Waypointsdotph; Rally de Leon'
source='Rally de Leon pre-aligned GPS Trackmaker file'

So, it appears that that data is largely imported from another source too,
and there is detail in there that can't be attributed to that user's
uploaded tracks or usable aerial imagery... In fact, certain features are
reproduced in such detail, considering there positions, that it would be
very unlikely that they could have been produced without aerial imagery,
and, infact, seems to effectively match the available google imagery...

I'm sorry to say, but, I think all this data will probably have to be
removed unless a valid source can be documented...

d
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