geographiclib-users — GeographicLib discussion

[Geographiclib-users] defining a projection (modified)

[hugh <hd...@bi...>]

Hi,
I am wanting to convert eastings and northings into lats and longs.
I am a civil engineer, not a surveyor, but have dabbled with
projections in the past so know a little.

I have been told my E / N are in a pseudo AMG (UTM) projection.  I have
been given the following parameters:


PSEUDO AMG 1966

Projection: Transverse_Mercator
False_Easting: 500000.000000
False_Northing: 10000000.000000
Central_Meridian: 145.000000
Scale_Factor: 1.000000
Latitude_Of_Origin: 0.000000
Linear Unit: Meter (1.000000)

Geographic Coordinate System: GCS_Australian_1966
Angular Unit: Degree (0.017453292519943299)
Prime Meridian: Greenwich (0.000000000000000000)
Datum: D_Australian_1966
  Spheroid: Australian
    Semimajor Axis: 6378160.000000000000000000
    Semiminor Axis: 6356774.719195305400000000
    Inverse Flattening: 298.250000000000000000


To me this looks like the standard UTM, except for the scale factor.
Is this correct?

Any someone suggest an open source library I can use to convert these
co ordinates into lats and longs.

Thanks
Hugh

Re: [Geographiclib-users] linker error using libGeographic 9.7.2 with QT **resolved

[hugh <hd...@bi...>]

On Thu, 6 Dec 2012 11:09:47 +1100
hdixon<hd...@bi...> wrote:

> Hi,
> I am trying to build a QT app using the latest libGeographic library.
> I have used libGeoGraphic successfully with QT previously, but this
> time I have a linker error which I cannot resolve.
> I am wanting to convert eastings / northings to lat/ long using the
> GeographicLib::GeoCoords class.
> 
> 
> My linker output, from qt creator, is:
> *************************************************************************
> g++ -Wl,-rpath,/home/hugh/QtSDK-1.2.1/Desktop/Qt/4.8.1/gcc/lib -o
> crashStat2kml main.o xmlfile.o
> -L/home/hugh/QtSDK-1.2.1/Desktop/Qt/4.8.1/gcc/lib
> -L/usr/local/lib/libGeographic -lphonon
> -L/home/hugh/QtSDK-1.2.1/Desktop/Qt/4.8.1/gcc/lib
> -lpulse-mainloop-glib -lpulse -lglib-2.0 -lQtDBus -L/usr/X11R6/lib64
> -lQtMultimedia -lQtScriptTools -lQtScript -lQtSvg -lQtGui
> -lQtXmlPatterns -lQtNetwork -lQtXml -lQtCore -lpthread main.o: In
> function `GeographicLib::GeoCoords::Reset(int, bool, double,
> double)': /usr/local/include/GeographicLib/GeoCoords.hpp:260:
> undefined reference to `GeographicLib::UTMUPS::Reverse(int, bool,
> double, double, double&, double&, double&, double&, bool)' make:
> Leaving directory
> `/home/hugh/code/vr/crashStat2kml-build-desktop-Desktop_Qt_4_8_1_for_GCC__Qt_SDK__Debug' /usr/local/include/GeographicLib/GeoCoords.hpp:265:
> undefined reference to `GeographicLib::GeoCoords::FixHemisphere()'
> collect2: error: ld returned 1 exit status make: *** [crashStat2kml]
> Error 1 10:10:51: The process "/usr/bin/make" exited with code 2.
> Error while building project crashStat2kml (target: Desktop)
> 
> *************************************************************************
> 
> I have had trouble in the past with order of parameters in the call to
> the linker, and am thinking there is something in libGeographic and QT
> that conflicts or upsets.  
> 
> Does anyone have any experiance using libG with QT?  andif so have
> they seen this problem and can you help please!
> 
> With thanks,
> H
> 
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Problem found in my configuration, had nothing to do with
libGeographics!

Sorry!
H

[Geographiclib-users] linker error using libGeographic 9.7.2 with QT

[hdixon<hd...@bi...>]

Hi,
I am trying to build a QT app using the latest libGeographic library.
I have used libGeoGraphic successfully with QT previously, but this
time I have a linker error which I cannot resolve.
I am wanting to convert eastings / northings to lat/ long using the
GeographicLib::GeoCoords class.


My linker output, from qt creator, is:
*************************************************************************
g++ -Wl,-rpath,/home/hugh/QtSDK-1.2.1/Desktop/Qt/4.8.1/gcc/lib -o
crashStat2kml main.o xmlfile.o
-L/home/hugh/QtSDK-1.2.1/Desktop/Qt/4.8.1/gcc/lib
-L/usr/local/lib/libGeographic -lphonon
-L/home/hugh/QtSDK-1.2.1/Desktop/Qt/4.8.1/gcc/lib -lpulse-mainloop-glib
-lpulse -lglib-2.0 -lQtDBus -L/usr/X11R6/lib64 -lQtMultimedia
-lQtScriptTools -lQtScript -lQtSvg -lQtGui -lQtXmlPatterns -lQtNetwork
-lQtXml -lQtCore -lpthread main.o: In function
`GeographicLib::GeoCoords::Reset(int, bool, double,
double)': /usr/local/include/GeographicLib/GeoCoords.hpp:260: undefined
reference to `GeographicLib::UTMUPS::Reverse(int, bool, double, double,
double&, double&, double&, double&, bool)' make: Leaving directory
`/home/hugh/code/vr/crashStat2kml-build-desktop-Desktop_Qt_4_8_1_for_GCC__Qt_SDK__Debug' /usr/local/include/GeographicLib/GeoCoords.hpp:265:
undefined reference to `GeographicLib::GeoCoords::FixHemisphere()'
collect2: error: ld returned 1 exit status make: *** [crashStat2kml]
Error 1 10:10:51: The process "/usr/bin/make" exited with code 2. Error
while building project crashStat2kml (target: Desktop)

*************************************************************************

I have had trouble in the past with order of parameters in the call to
the linker, and am thinking there is something in libGeographic and QT
that conflicts or upsets.  

Does anyone have any experiance using libG with QT?  andif so have they
seen this problem and can you help please!

With thanks,
H