Thanks Frank I had guessed that I might have to use -s_srs but doing I saw no tangible results hence my request for more verbose output. "--debug on" was very useful as was PROJ_DEBUG.
As you surmised, the datum "NAD83_High_Accuracy_Regional_Network" is not recognized as +datum=NAD83 Then I found that I had missed the step in building Proj.4 of downloading separately the datum shift zip file. Upon fixing that I am now able to reproject correctly! HURRAH! Brian It can be helpful to run gdalwarp with the commandline > option "--debug on" in which case the debug output should > include the PROJ.4 rendering of the source and destination > coordinate system. > > At a very low level you can also define the PROJ_DEBUG environment > variable to the value ON and PROJ.4 will report some details on what > datum files are opened. > > I think you are going to have to provide a source coordinate > system with the -s_srs commandline switch to gdalwarp that > defines a more conventional NAD83 based coordinate system. You > might also want to file a ticket on this issue. Ideally we > would be smarter about treating NAD83 HARN as equivelent to NAD83 > for most purposes. > > Best regards, > -- > > ---------------------------------------+-------------------------------------- > I set the clouds in motion - turn up | Frank Warmerdam, > warmer...@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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