[R-sig-Geo] Fail to load a vector layer using spgrass6

Tue Dec 14 10:01:11 CET 2010

On Tue, 14 Dec 2010, Pierre Roudier wrote:

> Thank you for your answer Roger,
>
>> Because there are two routes used depending on the setting of the plugin=
>> argument, could you look at ogrDrivers() and see if you have an OGR GRASS
>> vector driver, and if so, try to set plugin= manually to TRUE and FALSE?
>
> The output of ogrDrivers() shows that I do not have the GRASS driver
> (tagged as FALSE).
>
>> Note that GRASS 7.0svn is the development version, snd is very much a moving
>> target - do you have to use this version?
>
> No, I do not have to use it, it is plein curiosity/testing of new
> features. However I reproduced the problem on the 6.4 version.

I suspect that for some reason v.out.ogr is failing, so the file is not 
written. Next, ogrInfo() fails to find it.

The latest (0.6-23) spgrass6 has a fix for a specific problem in the layer 
parameter of v.out.ogr in GRASS7 - I see that you are using the previous 
spgrass6. Could you try updating spgrass6?

If that doesn't work, please move thread only to grass-stats, and try 
using v.out.ogr to export the vector to the GRASS mapset temporary 
directory manually - use g.tempfile to find out what the path to that 
directory is. If v.out.ogr appears to complete without problems, do check 
the temporary directory to be sure.

Roger

>
>> And GDAL 1.7.1 is not the current
>> version, which is 1.7.3. Did you install GDAL and/or GRASS from source, or
>> from binaries (in my experience, installing from source ensures more
>> consistency, and the GDAL/OGR GRASS plugins are often the source of problems
>> because of version mismatch).
>
> I installed both GRASS 6.4 and GDAL/OGR from binaries, yes.
>
>> PS. The best list is probably:
>>
>> http://grass.osgeo.org/statsgrass/index.php
>
> OK. I am sending that message to that list, and keep R-sig-geo for
> consistency. Sorry for cross-posting.
>
> Thanks again,
>
> Pierre
>
>>
>> Roger
>>
>>
>> as it is more specific, and also seen by GRASS developers.
>>
>>>
>>> I tried to play with the different options but I did not succeed>
>>> Here's more info about my data and platform:
>>>
>>> Here is the output of v.info for the data I want to load:
>>> GRASS 7.0.svn (NZTM2000):~ > v.info ph_cl
>>>
>>> +----------------------------------------------------------------------------+
>>> | Name:            ph_cl
>>>   |
>>> | Mapset:          nitrif_inhib
>>>    |
>>> | Location:        NZTM2000
>>>    |
>>> | Database:        /home/roudierp/Documents/GRASSDATA
>>>    |
>>> | Title:
>>>   |
>>> | Map scale:       1:1
>>>   |
>>> | Map format:      native
>>>    |
>>> | Name of creator: roudierp
>>>    |
>>> | Organization:
>>>    |
>>> | Source date:     Mon Dec 13 11:30:11 2010
>>>    |
>>>
>>> |----------------------------------------------------------------------------|
>>> |   Type of map: vector (level: 2)
>>>   |
>>> |
>>>    |
>>> |   Number of points:       0               Number of centroids:  236847
>>>   |
>>> |   Number of lines:        0               Number of boundaries: 892041
>>>   |
>>> |   Number of areas:        355021          Number of islands:    79124
>>>    |
>>> |
>>>    |
>>> |   Map is 3D:              No
>>>   |
>>> |   Number of dblinks:      1
>>>    |
>>> |
>>>    |
>>> |   Projection: Transverse Mercator
>>>    |
>>> |
>>>    |
>>> |               N:  6190887.80270169    S:  4823266.04395524
>>>   |
>>> |               E:  2091804.65744429    W:   1170289.3071784
>>>   |
>>> |
>>>    |
>>> |   Digitization threshold: 0
>>>    |
>>> |   Comment:
>>>   |
>>> |
>>>    |
>>>
>>> +----------------------------------------------------------------------------+
>>>
>>> And finally some metadata about the software packages I used:
>>>
>>> here's the sessionInfo():
>>>
>>>> sessionInfo()
>>>
>>> R version 2.12.0 (2010-10-15)
>>> Platform: x86_64-unknown-linux-gnu (64-bit)
>>>
>>> locale:
>>> [1] LC_CTYPE=en_GB.UTF-8       LC_NUMERIC=C
>>> [3] LC_TIME=en_GB.UTF-8        LC_COLLATE=en_GB.UTF-8
>>> [5] LC_MONETARY=C              LC_MESSAGES=en_GB.UTF-8
>>> [7] LC_PAPER=en_GB.UTF-8       LC_NAME=C
>>> [9] LC_ADDRESS=C               LC_TELEPHONE=C
>>> [11] LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C
>>>
>>> attached base packages:
>>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>>
>>> other attached packages:
>>> [1] spgrass6_0.6-21 XML_3.2-0       rgdal_0.6-31    sp_0.9-74
>>>
>>> loaded via a namespace (and not attached):
>>> [1] grid_2.12.0     lattice_0.19-13
>>>
>>>> library(spgrass6)
>>>
>>> Loading required package: sp
>>> Loading required package: rgdal
>>> Geospatial Data Abstraction Library extensions to R successfully loaded
>>> Loaded GDAL runtime: GDAL 1.7.1, released 2010/02/08
>>> Path to GDAL shared files: /usr/share/gdal
>>> Loaded PROJ.4 runtime: Rel. 4.7.1, 23 September 2009
>>> Path to PROJ.4 shared files: /usr/share/proj/
>>> Loading required package: XML
>>> GRASS GIS interface loaded with GRASS version: 7.0.svn
>>> and location: NZTM2000
>>>
>>> I got the last CRAN version of sp.
>>>
>>> This runs on a linux machine:
>>> GRASS 7.0.svn (NZTM2000):~ > uname -a
>>> Linux A208_RoudierP 2.6.34.7-0.5-xen #1 SMP 2010-10-25 08:40:12 +0200
>>> x86_64 x86_64 x86_64 GNU/Linux
>>>
>>>
>>> Cheers,
>>>
>>> Pierre
>>>
>>> _______________________________________________
>>> R-sig-Geo mailing list
>>> R-sig-Geo at r-project.org
>>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>>
>>
>> --
>> 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
>>
>>
>

-- 
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