[Proj] cs2cs syntax help

nicolas david ericnico.david at gmail.com
Tue Oct 15 01:58:20 EST 2013


Hi Szilard

concerning you first point "using the command properly"
a) first you have to use input telling if your coordinate are north/south
and east/west. so transform
26d25'55" 126d15'04"  to 26d25'55"S 126d15'04"E
b) you need to specifie that you want UTM51 south and not utm51 north by
using the +south parameters
spatialreference.org is a very good ressource for finding this kind of
stuff : http://www.spatialreference.org/ref/epsg/32751/
cs2cs +proj=latlong +datum=WGS84 +to  +proj=utm +zone=51 +datum=WGS84 -r




2013/10/15 Szilard Albert <szilard.albert at gmail.com>

> Dear list,
>
> very new to this, I have a question that might be very easily answered by
> someone familiar with cs2cs.
> I have the following Lat/Lon coordinates pair (few thousand pairs actually)
>
> 262555.03S 1261004.91E
> 261455.02S 1261504.90E
> 262555.03S 1261004.91E
> 265555.04S 1261404.93E
>
> with datum/spheroid/etc description as below. Zone 51, Australia.
>
>
>
> H1400 GEODETIC DATUM SURVEYED   WGS84       WGS84        6378137.000
> 298.2572229
> H1401 TRANSFORMATION PARAMETERS    0.0   0.0   0.0 0.000 0.000 0.000
> 0.0000000
> H1500 GEODETIC DATUM AS PLOTTED WGS84       WGS84        6378137.000
> 298.2572229
> H1501 TRANSFORMATION PARAMETERS    0.0   0.0   0.0 0.000 0.000 0.000
> 0.0000000
> H1600 DATUM SHIFTS                 0.0   0.0   0.0 0.000 0.000 0.000
> 0.0000000
> H1700 VERTICAL DATUM            N/A
> H1800 PROJECTION                GEODETIC
> H1900 ZONE                      N/A
> H2002 ANGULAR UNITS             1    DEGREES
> H2100 STANDARD PARALLELS          0 0 0.000N  0 0 0.000N
> H2200 CENTRAL MERIDIAN            0 0 0.000E
> H2301 GRID ORIGIN                 0 0 0.000N  0 0 0.000E
> H2302 GRID COORDINATES AT ORIGIN       0.00W       0.00S
>
>
> I need to transform these to XY coordinates.
>
> Using
>
> cs2cs +proj=latlong +datum=WGS84 +to  +proj=utm +zone=51 +datum=WGS84 -r
> <<EOF
> 26d25'55" 126d15'04"
> EOF
>
> I get
>
> 824270.31       2927618.51 0.00
>
>
> X looks OK, but for the Y values I am expecting values around 6,9xx,xxx ~
> 7,0xx,xxx
>
> Would you please:
>
> 1. Point me towards using the command properly
> 2. Suggest best format of my text file for batch conversion. Can easily
> manipulate/separate columns, would prefer not to have to inset d, ', "
> symbols, but would be able if necessary.
>
> Thanks for your help,
> regards,
> Szilard
>
>
>
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> Proj at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/proj
>
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