[gdal-dev] Unable to use geom.ExportToWkt() in Python ?

Frank Warmerdam warmerdam at pobox.com
Tue Nov 23 21:31:06 EST 2010

Gregor at HostGIS wrote:
> Hey all. I am using the OGR binding for python, to open a SHP and print 
> a geometry's WKT. This works until I try to call geom.ExportToWkt() At 
> that time I simply get "Premature end of script headers" Running it from 
> the command line I get a segmentation fault.
> The code snippet:
>     driver     = ogr.GetDriverByName('ESRI Shapefile')
>     datasource = driver.Open(shapefile,0)
>     layer      = datasource.GetLayer()
>     spatialRef = layer.GetSpatialRef()
>     firstgeom  = layer.GetFeature(0).GetGeometryRef()
>     wkt        = firstgeom.ExportToWkt()


Geometries do not have the ExportToWkt() method.  This is a method on
the ogr.SpatialReference class.

Perhaps try:
   wkt = spatialRef.ExportToWkt()

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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