[FWTools] Problem with SouthAfrican projections ex Lo29

[Darko Radiceski]

And the text message i got was:

No translation for Transverse_Mercator_South_Orientated to PROJ.4 format is
known.

On Mon, Feb 7, 2011 at 11:56 PM, Darko Radiceski <radiceski at gmail.com>wrote:

> Following the email i did a bit more testing with this and added calls to
>
>
> theErrNum = CPLGetLastErrorNo();
>
> eErr = CPLGetLastErrorType();
>
>
>
> and they turn up to be:
>
> 6
>
> and
>
> CE_Failure
>
> Any idea what i am doing wrong?
>
> On Mon, Feb 7, 2011 at 6:41 PM, Darko Radiceski <radiceski at gmail.com>wrote:
>
>> Hi all,
>>
>> I have been having some issues when i try and create a
>> CoordinateTransform object from project from SouthAfrican projection
>> Lo29 to EPSG. I have the following code:
>>
>> int LIOinput_CoordinateTransform_Build(int source_EPSGcode, int
>> target_EPSGcode, LIO_CoordinateTransform *pt_CT)
>> {       int rc=FALSE;
>>
>>        if(pt_CT)
>>        {
>>                // init
>>                LIOinput_CoordinateTransform_Init(pt_CT);
>>
>>                // allocate
>>                pt_CT->hSR[LIO_SOURCE] = OSRNewSpatialReference(NULL);
>>                pt_CT->hSR[LIO_TARGET] = OSRNewSpatialReference(NULL);
>>
>>                if(pt_CT->hSR[LIO_SOURCE] && pt_CT->hSR[LIO_TARGET])
>>                {
>>                        if(OSRImportFromEPSG(pt_CT->hSR[LIO_SOURCE],
>> source_EPSGcode) ==
>> OGRERR_NONE)  //2053
>>                        {
>>
>>  if(OSRImportFromEPSG(pt_CT->hSR[LIO_TARGET], target_EPSGcode) ==
>> OGRERR_NONE)
>>                                {
>>                                        if(target_EPSGcode == 4326) /* ==
>> WGS84 */
>>
>>  OSRSetAngularUnits(pt_CT->hSR[LIO_TARGET], SRS_UA_RADIAN, 1.0);
>>                                        else
>>                                        {       if(source_EPSGcode == 4326)
>>
>>  OSRSetAngularUnits(pt_CT->hSR[LIO_SOURCE], SRS_UA_RADIAN, 1.0);
>>                                        }
>>
>>                                        // build
>>                                        if((pt_CT->hCT =
>> OCTNewCoordinateTransformation(pt_CT->hSR[LIO_SOURCE],
>> pt_CT->hSR[LIO_TARGET])))
>>                                        {
>>                                                if((pt_CT->hGeom =
>> OGR_G_CreateGeometry(wkbPoint25D)))
>>                                                {
>>
>>  pt_CT->EPSGcode[LIO_SOURCE] = source_EPSGcode;
>>
>>  pt_CT->EPSGcode[LIO_TARGET] = target_EPSGcode;
>>
>>                                                        // success!
>>                                                        rc = TRUE;
>>                                                }
>>                                        }
>>                                }
>>                        }
>>                }
>>
>>                // fail --> clean up
>>                if(!rc)
>>                        LIOinput_CoordinateTransform_Clean(pt_CT);
>>        }
>>
>>        return(rc);
>> }
>>
>> The call to: OCTNewCoordinateTransformation always fails.
>>
>> I have downloaded the latest proj4 files and and recompiled it. I also
>> have the latest EPSG file that has the definition of Lo29 - 2053
>>
>> Any advice of what i could be doing wrong?
>>
>> Cheers
>> Dan
>>
>> --
>> Dan
>> University of Wollongong
>> Australia
>> SIFE - UOW Chapter - Alumni
>>
>
>
>
> --
> Radiceski Darko
>
> University of Wollongong
> Australia
> SIFE - UOW Chapter - Alumni
> CASUAL ACADEMIC STAFF TEACHING - UOW SITACS
> (School of Information Technology and Computer Science,University of
> Wollongong)
> Univeristy of Wollongong - Alumni
>



-- 
Radiceski Darko
University of Wollongong
Australia
SIFE - UOW Chapter - Alumni
CASUAL ACADEMIC STAFF TEACHING - UOW SITACS
(School of Information Technology and Computer Science,University of
Wollongong)
Univeristy of Wollongong - Alumni
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