[OSGeo-Discuss] PROJCS vs LOCAL_CS

[Alexander Drozdov]

В Сб., 16/06/2012 в 11:31 -0700, Frank Warmerdam пишет:
> On 12-06-16 09:13 AM, Alexander Drozdov wrote:
> > Hi  all!
> >
> > I have png map file, .pwg World file and .prj file with projection in
> > WKT format.
> > I try to create GeoTIFF with next command:
> >    gdal_translate -of GTiff -a_srs O-50-103-D.prj O-50-103-D.png
> > O-50-103-D.tif
> >
> > but, gdalinfo printf LOCAL_CS coordinate system instead PROJCS, so
> > different applications like QLandkarteGT can't open result GeoTiff.
> >
> > Why coordinate system is LOCAL_CS, but not PROJCS?
> >
> > My example files in archive:
> > http://htrd.su/~hatred/maps/O-50-103-D.tar.gz
> >
> > testepsg tool say that prj file is correct.
> 
> Alexander,
> 
> The .prj file looks ok.  When I run your command with gdal trunk
> I get a TIFF file with the following gdalinfo report:
> 
> Coordinate System is:
> PROJCS["unnamed",
>      GEOGCS["Krassovsky, 1942",
>          DATUM["unknown",
>              SPHEROID["krass",6378245,298.3],
>              TOWGS84[23.9,-141.3,-80.9,0,-0.37,-0.85,-0.12]],
>          PRIMEM["Greenwich",0],
>          UNIT["degree",0.0174532925199433]],
>      PROJECTION["Transverse_Mercator"],
>      PARAMETER["latitude_of_origin",0],
>      PARAMETER["central_meridian",117],
>      PARAMETER["scale_factor",1],
>      PARAMETER["false_easting",20500000],
>      PARAMETER["false_northing",0],
>      UNIT["metre",1,
>          AUTHORITY["EPSG","9001"]]]
> GeoTransform =
>    20513343.29170791, 4.59598418645, -9.994925266010001e-13
>    6338767.084816154, 1.43747239781e-12, -4.58751230964
> 
> I'm not clear on why you are running into problems.

Frank, I compile gdal from SVN and issue does not present now. By the
way, gdalinfo from new version show correct output on tiff generated
with old gdal_translate.

Thanks a lot again! :-)