[GRASS-stats] Incompatible library version for module SOLVED but new problem with plugin=TRUE has emerged

[Roger Bivand]

On Sat, 3 Jan 2009, Markus Neteler wrote:

> On Fri, Jan 2, 2009 at 7:38 PM, Jarek Jasiewicz <jarekj at amu.edu.pl> wrote:
>> Markus Neteler pisze:
>>> 2009/1/2 Jarek Jasiewicz <jarekj at amu.edu.pl>:
>>>> In fact I didn't use R for two month so maybe I lost something but  after
>>>>  compilation of grass 6.4 svn I tiried to read raster I recive the
>>>> following:
>>>
>>> I assume that you did not run
>>>  make distclean
>>> to compile GRASS (see below).
>>>
>> Thanks for ansver but unfortunately I always do makedistclean in grass
>> before compilation
>>
>> addationaly I simply did:
>>
>> gdalinfo /home/jarekj/grassdata/Polska/PERMANENT/cellhd/Polska
>> ERROR:Incompatible library version for module
>>
>> Here is the problem
>>
>> so not the GRASS but grass-gdal plugin must to be recompiled. I think it is
>> not intended because plugin was created for to not compile gdal everytime
>> grass has ben recompiled
>>
>> I ecompiled plugin, it and everthing is OK
>
> Good to know that. Perhaps report this to the plugin author (GDAL team)
> if it is really a problem. I never had it.
>
>> But the issue with plugin which emerged is as follows:
>>
>> r=readRAST6("Polska", plugin=FALSE)
>>
>> Exporting raster as integer values (bytes=2)
>
> [This msg indicates that the old mechanism of the R extension
> is used.]
>
>> Using the current region settings...
>> north=804414.520000
>> south=137864.430000
>> east=865559.620000
>> west=180375.670000
>> r=1333
>> c=1370
>> 100%
>>
>>
>> It is OK, my region settings are included
>>
>> ra=readRAST6("Polska", plugin=TRUE)
>> /home/data/grassdata/Polska/PERMANENT/cellhd/Polska has GDAL driver GRASS
>> and has 21601 rows and 18001 columns
>>
>> it is also OK because original map is rather big
>>
>> next were eror due to file size
>>
>> but this means that plugin ignores current region setings!
>
> Yes. That's why I suggested to implement r.out.gdal usage
> in the GRASS-R extension time ago (see this list archive,
> date	Sun, Jun 1, 2008 at 9:40 PM
> subject	Re: [GRASS-stats] Speedup of readVECT6() with plugin
> ).
>
> There is a "plugin" switch which you set to plugin=TRUE, perhaps
> it needs to be FALSE to make use of the better + faster r.out.gdal
> which would solve your problem as it is resolution/region sensitive.
>
> I didn't try the GRASS-R extension for a while. Definitely you need
> a fresh version of the GRASS-R extension.

The current settings of readRAST6() will use the plugin if available (but 
try to check that the regions match) when plugin=NULL. If you want to 
force the use of r.out.gdal, set plugin=FALSE and useGDAL=TRUE (version 
0.5-16). Please let me know if this helps.

Roger

>
> Markus
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no