[gdal-dev] Local coordinate system and proj4

Frank Warmerdam warmerdam at pobox.com
Thu May 21 08:45:01 EDT 2009


Bryan Keith wrote:
> Hello,
> 
> I've been sent an ESRI coordinate system file (.prj) that looks like this:
> 
> PROJCS["Unknown",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Local"],PARAMETER["False_Easting",68396.30349583333],PARAMETER["False_Northing",207061.59375],PARAMETER["Scale_Factor",1.0],PARAMETER["Azimuth",0.0],PARAMETER["Longitude_Of_Center",-117.0],PARAMETER["Latitude_Of_Center",41.29],UNIT["Foot_US",0.3048006096012192]]
> 
> When I try to use this definition in proj4 using ogr tools, I get this error:
> 
> ERROR 6: No translation for Local to PROJ.4 format is known.
> 
> Is there a way to use this projection information with proj4?  ESRI ArcMap
> seems to be to translate from these coordinates to lat-long WGS84.

Bryan,

I have no idea what PROJECTION["Local"] represents.

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent



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