[Proj] Datum Conversion
Michael.Dennis at divestco.com
Wed Apr 20 15:30:35 EDT 2005
I'm having a datum conversion issue with gdalwarp. I'm trying to convert and image from NAD83 to a NAD27 utm projection. I've got it working to include the "null" grid file but it doesn't seem to apply it to one point. This is the message I get...
pj_apply_gridshift(): used Null transform for whole world
pj_apply_gridshift(): failed to find a grid shift table for
tried: @ntv2_0.gsb, at null
ERROR 1: failed to load NAD27-83 correction file
ERROR 1: GDALWarperOperation::ComputeSourceWindow() failed because
You can see the latitude is all screwy for that point. Does that mean I have a bad file? Shouldn't the null grid shift work regardless of the long/lat values? I read about a patch for large longitude values but I checked and my PROJ source and it does include that, does something similar need to be done with latitude values?
Any help or workaround would be appreciated!
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