[GRASS-user] r.out.gdal not working

GRASS GRASS user
,
1

i m using grass6.2 for windows through cygwin when i m using
r.out.gdal input=ng42.blue format=GTiff
the error is
Required GRASS plugin for GDAL is missing

How can it possible if r.in.gdal running without any error.

THEN I have downloaded gdal for Grass from http://trac.osgeo.org/gdal/wiki/DownloadingGdalBinaries

but it is not working

Pawan Joshi

Ahhh…imagining that irresistible “new car” smell?
Check out new cars at Yahoo! Autos.

2

Pawan Joshi wrote:

i m using grass6.2 for windows through cygwin when i m using
r.out.gdal input=ng42.blue format=GTiff
the error is
Required GRASS plugin for GDAL is missing

How can it possible if r.in.gdal running without any error.

r.in.gdal is a C program which uses GDAL for reading and GRASS for
writing. GDAL only needs support for the files which are being read;
it doesn't need GRASS support.

In 6.2, r.out.gdal is a script which uses gdal_translate, which uses
GDAL for both reading and writing. GDAL needs GRASS support for
reading.

In 6.3, r.out.gdal is a C program, analogous to r.in.gdal, so GDAL
doesn't require GRASS support.

THEN I have downloaded gdal for Grass from
http://trac.osgeo.org/gdal/wiki/DownloadingGdalBinaries

but it is not working

This probably means that the GDAL library was built without GRASS
support. This is quite common, as GRASS is one of the harder options
to support. GRASS itself requires GDAL, so building a version of GDAL
which supports GRASS involves first building GDAL without GRASS
support, then building GRASS, then building GDAL again with GRASS
support.

Unless you can find a pre-compiled version of GDAL which was built
with GRASS support, you'll need to build GDAL yourself.

--
Glynn Clements <glynn@gclements.plus.com>

3

On Sun, May 06, 2007 at 03:54:34PM +0100, we recorded a bogon-computron collision of the <glynn@gclements.plus.com> flavor, containing:

This probably means that the GDAL library was built without GRASS
support. This is quite common, as GRASS is one of the harder options
to support. GRASS itself requires GDAL, so building a version of GDAL
which supports GRASS involves first building GDAL without GRASS
support, then building GRASS, then building GDAL again with GRASS
support.

Isn't the gdal-grass plugin still the preferred way to get GRASS support into
gdal? The "build gdal without grass, build grass, rebuild gdal" thing is a
real PITA, and the plugin is much easier.

I haven't upgraded GDAL since 1.3.2, though --- does the plugin still work
with GDAL 1.4.0?

--
Tom Russo KM5VY SAR502 DM64ux http://www.swcp.com/~russo/
Tijeras, NM QRPL#1592 K2#398 SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM
"And, isn't sanity really just a one-trick pony anyway? I mean all you get is
one trick, rational thinking, but when you're good and crazy, oooh, oooh,
oooh, the sky is the limit!" --- The Tick

4

Tom Russo wrote on 05/06/2007 07:31 PM:

On Sun, May 06, 2007 at 03:54:34PM +0100, we recorded a bogon-computron collision of the <glynn@gclements.plus.com> flavor, containing:
  

This probably means that the GDAL library was built without GRASS
support. This is quite common, as GRASS is one of the harder options
to support. GRASS itself requires GDAL, so building a version of GDAL
which supports GRASS involves first building GDAL without GRASS
support, then building GRASS, then building GDAL again with GRASS
support.
    
Isn't the gdal-grass plugin still the preferred way to get GRASS support into
gdal?

Yes. See
http://grass.gdf-hannover.de/wiki/Compile_and_install_GRASS_and_QGIS_with_GDAL/OGR_Plugin

  The "build gdal without grass, build grass, rebuild gdal" thing is a
real PITA, and the plugin is much easier.
  

Yes.

I haven't upgraded GDAL since 1.3.2, though --- does the plugin still work
with GDAL 1.4.0?
  

There are issues with GRASS 6.3-CVS and the latest published plugin due
to an API change in GRASS.
This has been resolved in GDAL-SVN and the updated plugin will hopefully
be published soon.
Since GRASS 6.2 was asked, this is unrelated.

Markus

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ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
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