[talk-ph] Ultimate mapping challenge: marking the Station Balanacan in OSM

Ed Garcia eppgarcia at gmail.com
Fri Aug 12 10:07:15 BST 2011


Manila Water Co actually mark their water meters by GPS.  And they do use
those sub-centimeter accurate GPS equipment.  I saw them mark our water
meter a few months ago.  They say they also do this to mark where their
supply pipes are.


On Fri, Aug 12, 2011 at 4:54 PM, Jim Morgan <jim at datalude.com> wrote:

> maning sambale wrote, On Friday, 12 August, 2011 04:12 PM:
> > My handheld GPS is off by 6.92 meters from the published PRS92
> coordinates.
>
> That reminded me, I was walking down the street the other day in Makati,
> and I came across a manhole cover. It had a detailed GPS co-ordinate
> engraved on it.
>        http://dl.dropbox.com/u/274900/DSC00341.JPG
>
> The co-ordinates were accurate down to 1/100th of a second, which seems
> quite precise (one second is around 28 metres at this latitude). I was
> wondering if this is common to all areas / cities, and if so, can we use it
> for something - aligning or verifying roads.
>
> Also ... maybe roadworks departments have records of these that they'd be
> prepared to release?
>
> Jim
>
>
>
> --
>
>   datalude: information security
>   e: jim at datalude.com
>   Philippines: +63 2 403 1311 / mob: +63 917 849 3939
>   Hong Kong: +852 6840 6693
>   w: http://www.datalude.com/
>
> _______________________________________________
> talk-ph mailing list
> talk-ph at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/talk-ph
>



-- 
website administrator:
- www.waypoints.ph
- reeflife.eppgarcia.com

PADI Divemaster #491048
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-ph/attachments/20110812/e807af32/attachment.html>


More information about the talk-ph mailing list