Does this mean that floating point grids are still read as integer when
the first "." does not appear in the first 100K of the file?
--
Edzer
Dylan Beaudette wrote:
On Wed, Jan 14, 2009 at 1:14 AM, Roger Bivand <roger.biv...@nhh.no> wrote:
On Tue, 13 Jan 2009, Dylan Beaudette wrote:
On Tuesday 13 January 2009, Edzer Pebesma wrote:
This sounds very familiar; I ran into this about 6 years ago or so.
Could it be related to this ticket:
http://trac.osgeo.org/gdal/ticket/2369
Yes, exactly! I have checked with readGDAL() with GDAL 1.6.0, and the
problem is resolved (in fact it defaults to int32), while the problem
remains in the 1.5.* GDAL series (including 1.5.4 released last week) for
the sample file in the ticket. May I add the sample file to rgdal to give an
indication of this?
Yes, please do include the sample file. This particular bug bit me
while processing a bunch of climate data about 4 months ago.
Cheers,
Dylan
The next Windows binary packages will be GDAL 1.5.4, not 1.6.0 - I'm working
on getting 1.6.0 to check through rgdal.
If Brian is working on something other than Windows with the CRAN binary
package, upgrading GDAL will fix the problem, because rgdal will use the
installed GDAL.
Roger
PS. GDAL < 1.6 can be tricked into doing the right thing by using a
NODATA_value in the file that is either less than the minimum int16 or
greater than the maximum int16, so with a text editor this can be a
"solution". The GDAL driver is more flexible in letting you choose
subscenes, etc, so this may be prefered to readAsciiGrid().
?
[snip]
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--
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de/
http://www.springer.com/978-0-387-78170-9 e.pebe...@wwu.de
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