RE: transform() does not do work for NGO1948 zone III-> WGS84 longlat (epsg:27393->epsg:4326)

> -----Original Message-----
> From: postgis-users-bounces <at> postgis.refractions.net [mailto:postgis-users-
> bounces <at> postgis.refractions.net] On Behalf Of strk <at> refractions.net
> Sent: 21 December 2005 08:19
> To: PostGIS Users Discussion
> Subject: Re: [postgis-users] transform() does not do work for NGO1948 zone
> III-> WGS84 longlat (epsg:27393->epsg:4326)
> 
> On Tue, Dec 20, 2005 at 04:56:47PM -0500, Frank Warmerdam wrote:
> ...
> > Error -38 is:
> >  	"failed to load NAD27-83 correction file",  	/* -38 */
> >
> > So basically, if the datum shift files are not found, then the
> > code fallback to trying a conversion without the datum shift.
> 
> Thank you Frank,
> maybe we should raise a WARNING in that case ? I mean, is
> "shift files not found" condition a sign of incomplete
> installation of PROJ4 ?

I would say a warning should definitely be given if the transformation being
done is not the one that was requested by the user.

Kind regards,

Mark.

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