[Gdal-dev] OGR transforms

[Curt, WE7U]

On Thu, 14 Oct 2004, Frank Warmerdam wrote:

> I'm not sure exactly what is happening. All the errors are coming from
> PROJ.4.  The geocentric one could be result of an improperly specified
> ellipsoid.  What are your source and destination coordinate systems
> (in WKT)?  The NAD27-83 correction issue presumably means you are trying
> to convert from WGS84 (essentially the same as NAD83 for my purposes) to
> NAD27.  If you want to do this you need to install the grid shift files
> as part of the PROJ.4 installation process.  This can be accomplished
> by overlaying the grid shift files on the PROJ distribution (they go
> in the proj/nad directory) before configuring PROJ.4.
>
>    ftp://ftp.remotesensing.org/pub/proj/proj-nad27-1.1.tar.gz

Ok.  Our code already uses libgeotiff/libshp/libproj and I'm used to
installing that set of files into proj for that, but didn't install
them into the CVS GDAL that I'm trying to use now.  I'd assumed
they'd be in CVS as well.  Thanks.

--
Curt, WE7U			         http://www.eskimo.com/~archer
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