[osgeo4w-dev] [osgeo4w] #288: GDAL - Datum shift issue (WGS84, NAD27, NAD83)

[OSGeo4W]

#288: GDAL - Datum shift issue (WGS84, NAD27, NAD83)
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Reporter:  tcgeophysics  |       Owner:  osgeo4w-dev@…               
    Type:  defect        |      Status:  new                         
Priority:  major         |   Component:  Package                     
 Version:                |    Keywords:  Datum shift grids NAD27 proj
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 Hi All,

 I am encountering a gdalwarp issue that I have a hard time narrowing
 down...

 I have a Canadian DEM (CDED) in USGS DEM format in Lat/Lon NAD83 (EPSG
 4269) and I want to convert it to an ER Mapper ERS format in UTM Zone 16
 NAD27 (EPSG 26716).

 The command I use is the following:
 > gdalwarp -s_srs EPSG:4269 -t_srs EPSG:26716 -of ERS 042c_0100_deme.dem
 042c_0100_deme_NAD27UTMZ16N.ers

 And the output is:
 > ERROR 1: No such file or directory
 > ERROR 1: GDALSuggestedWarpOutput() failed because the passed transformer
 failed.


 GDAL was installed using osgeo4w.exe installer on my Window 7 machine.

 After doing some research it seems that datum shift grids may not be built
 by default with Proj.4.
 Is there other dependencies that may affect datum shifts?

 How can I check that datum shift grids were built and which ones?

 What can be an approach to add other datum shift grids?

 Thanks

 Thomas

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Ticket URL: <http://trac.osgeo.org/osgeo4w/ticket/288>
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