[Gdal-dev] unable to load proj.4

[Frank Warmerdam]

Ellen De Beuckeleer wrote:
> Hi Didrik,
> 
> I tried your suggestion and indead, I do not need the proj.dll anymore!
> 
> Unfortunatelly, I still have the difference in projection information as 
> described below.
> 
> Some additional information on the problem: The expected value below is 
> the one we used in our test on Linux, using Proj v. 4.4.8. Now after 
> converting our project to Windows, using Proj v 4.4.9, our test fail. 
> Could this minor version change make the difference?

Ellen,

My guess would be that on windows the EPSG support files are not being
found, so the full coordinate system information (stuff like coordinate
system full name) are not available.

Normally the EPSG support files are found from the gdal/data directory
based on the GDAL_DATA environment variable.  On unix/linux they are
installed in /usr/local/share/gdal and will be found by default.

Best regards,

> Didrik Pinte wrote:
>> Le jeudi 18 mai 2006 à 02:07 -0700, EllenD a écrit :
>>
>>> Hi,
>>>
>>> I retrieved a proj.dll from http://proj.maptools.org/ and the errors are
>>> gone. I am a bit worried though, because I get the following 
>>> georeference
>>> information:
>>>
>>> PROJCS["unnamed",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS
>>> 84",6378137,298.2572235630016,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-117],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","32611"]] 
>>>
>>>
>>> and this is what I expected:
>>>
>>> "PROJCS[\"WGS 84 / UTM zone 11N\",GEOGCS[\"WGS
>>> 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS
>>> 84\",6378137,298.2572235629972,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433],AUTHORITY[\"EPSG\",\"4326\"]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"latitude_of_origin\",0],PARAMETER[\"central_meridian\",-117],PARAMETER[\"scale_factor\",0.9996],PARAMETER[\"false_easting\",500000],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AUTHORITY[\"EPSG\",\"32611\"]]" 

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