[talk-ph] Ultimate mapping challenge: marking the Station Balanacan in OSM
Ed Garcia
eppgarcia at gmail.com
Fri Aug 12 13:03:39 BST 2011
some years ago I tried locating LAG2 when I frequented the Caliraya area,
but could not find it. My old GPS that time (Magelan GPS315, with position
error of about 14 meters) kept on pointing me to an area several meters
north of the junction where I could not find any possible markers.
Maybe my GPS was not accurate enough, or maybe the data I was using was
converted wrongly (came from PRS92 and recalculated to wgs84), or the marker
is gone, or the brass rod is indeed right at the junction of the two roads.
Anyway, here is the history of the coordinates ...
Below are the original values of the coordinates in PRS92. To convert it to
WGS84, I first manually inputted them into GPS Utility which was set to
Luzon Datum while I was keying-in the values (no PRS92 on GPS Utility back
then). Then, I changed the datum on GPS Utility which automatically
recalculated the values into WGS84.
This was based on what I have been told, that the difference between PRS92
and Luzon datum is very very minimal. Btw, the difference between Luzon and
WGS84 is over a hundred meters.
Perhaps Maning can do some recalculations based on the original PRS92?
H SOFTWARE NAME & VERSION
I GPSU 4.03 REGISTERED to 'sloovey'
S DateFormat=yy-mm-dd
S Timezone=8
S Units=M,M
S SymbolSet=0
H R DATUM
M E Luzon Philippines 048 -6.9400000E+01 -3.7264640E-05 -133 -77 -51
H COORDINATE SYSTEM
U LAT LON DMS
F ID---- Latitude Longitude T O Alt(m) Comment
W ABR1 N17°36'16.84" E120°36'49.89" I E 0.0 ABRA
W ABR2 N17°34'22.27" E120°54'09.10" I E 0.0 ABRA
W ARA1 N15°45'31.27" E121°33'42.42" I E 0.0 AURORA
W ARA2 N16°08'41.60" E121°57'21.90" I E 0.0 AURORA
W ARA3 N16°25'00.80" E122°14'17.45" I E 0.0 AURORA
W BGT1 N16°24'05.20" E120°38'41.85" I E 0.0 BENGUET
W BGT2 N16°35'55.95" E120°45'39.28" I E 0.0 BENGUET
W BGT3 N16°36'03.38" E120°45'41.25" I E 0.0 BENGUET
W BLN1 N14°56'32.01" E120°52'47.62" I E 0.0 BULACAN
W BLN2 N14°50'53.22" E120°45'48.04" I E 0.0 BULACAN
W BLN3 N14°54'20.77" E121°02'29.98" I E 0.0 BULACAN
W BLN4 N15°11'29.35" E121°02'34.71" I E 0.0 BULACAN
W BTG1 N13°49'13.21" E120°57'20.62" I E 0.0 BATANGAS
W BTG2 N14°05'02.10" E120°37'09.73" I E 0.0 BATANGAS
W BTG3 N13°40'30.09" E121°26'59.60" I E 0.0 BATANGAS
W BTG4 N13°32'08.42" E121°05'50.70" I E 0.0 BATANGAS
W BTG5 N13°38'13.43" E121°02'04.03" I E 0.0 BATANGAS
W BTG6 N13°38'13.98" E121°11'38.09" I E 0.0 BATANGAS
W BTG7 N13°37'24.68" E121°04'51.35" I E 0.0 BATANGAS
W BTG8 N13°44'35.19" E120°56'46.59" I E 0.0 BATANGAS
W BTN1 N14°35'06.85" E120°34'28.59" I E 0.0 BATAAN
W BTN2 N14°22'52.15" E120°34'30.50" I E 0.0 BATAAN
W BTN3 N14°26'37.79" E120°29'50.07" I E 0.0 BATAAN
W CVT1 N14°16'57.90" E120°59'44.17" I E 0.0 CAVITE
W CVT2 N14°16'58.43" E120°51'49.28" I E 0.0 CAVITE
W IFG1 N16°55'19.86" E121°03'00.82" I E 0.0 IFUGAO
W ILN1 N18°23'47.43" E120°35'44.45" I E 0.0 ILOCOS NORTE
W ILN2 N17°58'11.10" E120°30'45.59" I E 0.0 ILOCOS NORTE
W ILN3 N18°05'10.64" E120°48'48.30" I E 0.0 ILOCOS NORTE
W ILS1 N17°35'53.36" E120°23'23.21" I E 0.0 ILOCOS SUR
W ILS2 N17°07'58.01" E120°26'32.72" I E 0.0 ILOCOS SUR
W ILS3 N16°58'50.36" E120°44'13.31" I E 0.0 ILOCOS SUR
W LAG1 N14°15'51.25" E121°23'48.53" I E 0.0 LAGUNA
W LAG2 N14°26'12.62" E121°26'52.34" I E 0.0 LAGUNA
W LAG3 N14°11'00.92" E121°08'46.49" I E 0.0 LAGUNA
W LAG4 N14°20'04.08" E121°03'10.64" I E 0.0 LAGUNA
W LAG5 N14°20'37.90" E121°02'54.05" I E 0.0 LAGUNA
W LUN1 N16°35'02.94" E120°18'11.21" I E 0.0 LA UNION
W LUN2 N16°21'37.74" E120°21'36.44" I E 0.0 LA UNION
W LUN3 N16°15'37.22" E120°21'58.28" I E 0.0 LA UNION
W MMA0 N14°38'12.09" E121°02'30.07" I E 0.0 MANILA
W MMA1 N14°32'19.06" E121°02'18.24" I E 0.0 MANILA
W MMA5 N14°39'28.40" E121°04'06.26" I E 0.0 MANILA
W MMA6 N14°35'59.16" E120°58'18.25" I E 0.0 MANILA
W MPV1 N17°05'39.22" E120°58'03.60" I E 0.0 MOUNTAIN PROVINCE
W PMG1 N15°08'30.22" E120°37'54.75" I E 0.0 PAMPANGA
W PNG2 N16°23'41.54" E119°52'49.35" I E 0.0 PANGASINAN
W PNG3 N16°03'53.52" E120°06'23.69" I E 0.0 PANGASINAN
W PNG4 N15°54'46.30" E120°38'25.41" I E 0.0 PANGASINAN
W PNG5 N15°52'09.25" E120°15'08.49" I E 0.0 PANGASINAN
W PNG6 N16°02'45.87" E120°19'39.03" I E 0.0 PANGASINAN
W RZL N14°29'02.31" E121°11'11.83" I E 0.0 RIZAL
W RZL2 N14°27'53.61" E121°11'46.73" I E 0.0 RIZAL
W KAY2 N17°24'33.60" E121°26'31.83" I E 0.0 KALINGA APAYAO
W KAY3 N18°14'23.89" E121°22'08.80" I E 0.0 KALINGA APAYAO
W QZN1 N14°06'12.00" E122°00'50.11" I E 0.0 QUEZON
W QZN2 N14°42'13.15" E122°19'34.67" I E 0.0 QUEZON
W QZN3 N14°55'36.18" E121°48'19.47" I E 0.0 QUEZON
W QZN4 N14°37'59.74" E121°56'19.53" I E 0.0 QUEZON
W QZN5 N14°39'59.30" E121°36'14.27" I E 0.0 QUEZON
W QZN6 N14°11'22.51" E121°43'38.33" I E 0.0 QUEZON
W QZN7 N15°12'45.44" E121°24'49.04" I E 0.0 QUEZON
W QZN8 N13°34'13.84" E122°33'55.45" I E 0.0 QUEZON
W QZN9 N13°47'14.78" E122°03'32.98" I E 0.0 QUEZON
W QZN10 N13°35'41.55" E122°19'25.74" I E 0.0 QUEZON
W QZN11 N13°31'34.65" E122°24'18.23" I E 0.0
W QZN12 N13°44'25.08" E122°27'50.89" I E 0.0 QUEZON
W QZN13 N13°09'50.97" E122°35'52.76" I E 0.0 QUEZON
W PNG7 N16°04'27.89" E120°20'03.20" I E 0.0 PANGASINAN
W TRC1 N15°28'44.14" E120°35'52.67" I E 0.0 TARLAC
W TRC2 N15°19'28.81" E120°25'27.63" I E 0.0 TARLAC
W TRC3 N15°36'39.83" E120°22'56.95" I E 0.0 TARLAC
W ZBS1 N15°24'38.67" E119°57'04.12" I E 0.0 ZAMBALES
W ZBS2 N14°59'42.77" E120°07'09.53" I E 0.0 ZAMBALES
W ZBS3 N15°48'26.09" E119°55'24.14" I E 0.0 ZAMBALES
W ZBS4 N15°03'43.22" E120°03'37.96" I E 0.0 ZAMBALES
W ZBS5 N15°00'57.91" E120°03'50.53" I E 0.0 ZAMBALES
W ZBS6 N14°57'11.75" E120°03'27.87" I E 0.0 ZAMBALES
W ZBS7 N14°56'45.73" E120°03'20.04" I E 0.0 ZAMBALES
On Fri, Aug 12, 2011 at 6:50 PM, tutubi
<tutubi at backpackingphilippines.com>wrote:
> hmmm...i always pass by unknowingly near LAG2 marker. will try to locate it
> exactly. there's a nearby gas station and the raymond bus terminal there
> near Famy/Siniloan along manila east road
>
> is it a landmark or just the junction of the two roads?
>
> On Fri, Aug 12, 2011 at 4:12 PM, maning sambale <
> emmanuel.sambale at gmail.com> wrote:
>
>> Thanks ed,
>>
>> Has anyone from waypoints or osm actually visited this reference point?
>>
>> I actually found a few of these markers.
>>
>> Example:
>> http://www.openstreetmap.org/browse/node/1287703706
>>
>> My handheld GPS is off by 6.92 meters from the published PRS92
>> coordinates.
>>
>> --
>> ---
>> I explore, therefore I blog.
>>
>> http://www.backpackingphilippines.com
>>
>>
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>
--
website administrator:
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PADI Divemaster #491048
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