[gdal-dev] Reading ArcInfo binary grids with the R rgdal package fails with "GDAL Error 3: Attempt to read past EOF in ..../arc.dir"

[Jason Roberts]

Markus - thanks for the links to those tickets. Those tickets seem to imply
this is a minor annoyance. Unfortunately, for me, it means I can't read the
grids at all from R. Perhaps if I was using the C interface there would be a
workaround (just ignore the error?) but this is not possible using the R
interface, as far as I can tell. For example, the rgdal GDAL.open API fails
with the same message.

Is the right solution to get the rgdal developers to code a workaround to
ignore the error somehow? Or is it to determine the underlying problem in
GDAL? Or perhaps ESRI is generating grids that violate the AIG format
specification?

Thanks again,
Jason

-----Original Message-----
From: neteler.osgeo at gmail.com [mailto:neteler.osgeo at gmail.com] On Behalf Of
Markus Neteler
Sent: Wednesday, July 22, 2009 8:58 AM
To: Jason Roberts
Cc: gdal-dev
Subject: Re: [gdal-dev] Reading ArcInfo binary grids with the R rgdal
package fails with "GDAL Error 3: Attempt to read past EOF in ..../arc.dir"

On Wed, Jul 22, 2009 at 2:57 AM, Jason Roberts<jason.roberts at duke.edu>
wrote:
> I have some R code that reads ArcInfo binary grids using the rgdal
package.
> This code has worked for a long time. Now, with the latest versions of
> everything it is failing with the message:
>
>
>
> GDAL Error 3: Attempt to read past EOF in
> C:\Temp\GeoEcoTemp_Jason\tmphrgwuo\projected0/../info/arc.dir.
>

I have the same problem (Linux). Apparently it is no real problem,
the data appear to be complete. However, it would be nicer to not see
such an error message :)

See also
http://trac.osgeo.org/gdal/ticket/2447
http://trac.osgeo.org/gdal/ticket/3031

Markus