[gdal-dev] OSR Projection Error 6

Jay L. jzl5325 at psu.edu
Fri Oct 8 10:11:46 EDT 2010


Morning all,

I am struggling to get a coordinate transformation to work in a python
script.  Below is the code snippet that is causing the following error:

"ERROR 6: No translation for 'Azimuthal_Equidistant' to PROJ.4 format is
known."

I am pulling the input spatial reference from the input shapefile
(Mars_2000), defining the custom projection (custom in that it is centered
on a point), and then trying to transform to the custom projection.

Create a new shapefile and copy, one geometry at a time, from the input to
> the new output
> ...
> #Define the new projection to ortho centered on the crater
>     azimuthal =
> "PROJCS['Azimuthal_Equidistant',GEOGCS['GCS_Mars_2000',DATUM['D_Mars_2000',SPHEROID['Mars_2000_IAU_IAG',3396190.0,169.8944472236118]],PRIMEM['Reference_Meridian',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Azimuthal_Equidistant'],PARAMETER['False_Easting',0.0],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',%f],PARAMETER['Latitude_Of_Origin',%f],UNIT['Meter',1.0]]"
> %(x,y)
>
>     intermediate_SR.ImportFromWkt(azimuthal)
>
>     #Transform the point from the spatial input reference to an azimuthal
> projection centered on the point
>     outputGeom.TransformTo(intermediate_SR)
> ...
>
Do I need to define the coordinate system differently or am I making an
error somewhere else?

Thanks!
Jay
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