[GRASS-stats] readRAST6() error (Windows XP and W2k)

[Roger Bivand]

On Thu, 5 Nov 2009, Martin Mainzer wrote:

> Hello at all
>
> I use R to do statistics of some GRASS data. On the windows machines (XP
> and W2K) there occurred a problem when using the readRAST6 command form
> the spgrass6 library. I think the problem is linked to the standard
> installation of the GRASS standalone installer (standalone version:
> WinGRASS-6.4.0SVN-r39626-1-Setup.exe).

Thanks, this is a clear report. I'll try to follow it up - it is in the 
r.out.gdal -> readGDAL part of readRAST6, where maybe extra protection is 
needed on the way through.

Roger

> The standalone installer creates a folder named "GIS DataBase" under "My
> Documents" (note the blank in the folder name). To test where the
> problem is, I renamed the folder to "GISDataBase" and moved it to E:\.
> With this configuration everything works fine. I guess there is a
> problem with the blank in the folder name that is created during the
> installation. But this is just a guess. I hope the experts will find the
> problem. Here some information out of R (version 7.10.0) after calling R
> via "Rgui.exe" in the wxpython GUI ("cmd" in the lower part of the
> window "GRASS GIS Ebenen-Manager"). For the example here I used the
> South-Dakota data set. First with the folder name with blanks (the
> folder name from the standard installation):
> ###
>> library(spgrass6)
> Lade nötiges Paket: sp
> Lade nötiges Paket: rgdal
> Geospatial Data Abstraction Library extensions to R successfully loaded
> Loaded GDAL runtime: GDAL 1.6.2, released 2009/07/31
> Path to GDAL shared files: C:/Programme/R/R-2.10.0/library/rgdal/gdal
> Loaded PROJ.4 runtime: Rel. 4.6.1, 21 August 2008
> Path to PROJ.4 shared files: C:/Programme/R/R-2.10.0/library/rgdal/proj
> Lade nötiges Paket: XML
> GRASS GIS interface loaded with GRASS version: 6.4.0svn
> and location: South-Dakota
>
>> gmeta6()
> gisdbase    E:\martin\daten\GIS DataBase
> location    South-Dakota
> mapset      PERMANENT
> rows        466
> columns     633
> north       4928000
> south       4914020
> west        590010
> east        609000
> nsres       30
> ewres       30
> projection  +proj=utm +zone=13 +a=6378206.4 +rf=294.9786982 +no_defs
> +nadgrids=C:/GRASS-6-SVN/etc/nad/conus +to_meter=1.0
>
>> map <- readRAST6('geology')
> Tut mir leid, <DataBase/South-Dakota/PERMANENT/.tmp/geology> ist keine
> erlaubte Option
> CPL ERROR 4: `E:/martin/daten/GIS
> DataBase/South-Dakota/PERMANENT/.tmp/geology' does not exist in the file
> system,
> and is not recognised as a supported dataset name.
>
> Fehler in .local(.Object, ...) :
>  `E:/martin/daten/GIS DataBase/South-Dakota/PERMANENT/.tmp/geology'
> does not exist in the file system,
> and is not recognised as a supported dataset name.
>
>> traceback()
> 8: .Call("RGDAL_OpenDataset", as.character(filename), TRUE, silent,
>       PACKAGE = "rgdal")
> 7: .local(.Object, ...)
> 6: initialize(value, ...)
> 5: initialize(value, ...)
> 4: new("GDALReadOnlyDataset", filename, silent = silent)
> 3: GDAL.open(fname, silent = silent)
> 2: readGDAL(rtmpfl11, p4s = getLocationProj(), silent = ignore.stderr)
> 1: readRAST6("geology")
>
>> sessionInfo()
> R version 2.10.0 (2009-10-26)
> i386-pc-mingw32
>
> locale:
> [1] LC_COLLATE=German_Germany.1252  LC_CTYPE=German_Germany.1252
> [3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
> [5] LC_TIME=German_Germany.1252
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] spgrass6_0.6-11 XML_2.6-0       rgdal_0.6-20    sp_0.9-44
>
> loaded via a namespace (and not attached):
> [1] grid_2.10.0     lattice_0.17-26
>
> ## #
> And now with a folder name without blanks:
> ###
>
>> library(spgrass6)
> Lade nötiges Paket: sp
> Lade nötiges Paket: rgdal
> Geospatial Data Abstraction Library extensions to R successfully loaded
> Loaded GDAL runtime: GDAL 1.6.2, released 2009/07/31
> Path to GDAL shared files: C:/Programme/R/R-2.10.0/library/rgdal/gdal
> Loaded PROJ.4 runtime: Rel. 4.6.1, 21 August 2008
> Path to PROJ.4 shared files: C:/Programme/R/R-2.10.0/library/rgdal/proj
> Lade nötiges Paket: XML
> GRASS GIS interface loaded with GRASS version: 6.4.0svn
> and location: South-Dakota
>
>> gmeta6()
> gisdbase    E:\GISDataBase
> location    South-Dakota
> mapset      PERMANENT
> rows        466
> columns     633
> north       4928000
> south       4914020
> west        590010
> east        609000
> nsres       30
> ewres       30
> projection  +proj=utm +zone=13 +a=6378206.4 +rf=294.9786982 +no_defs
> +nadgrids=C:/GRASS-6-SVN/etc/nad/conus +to_meter=1.0
>
>> map <- readRAST6('geology')
> E:/GISDataBase/South-Dakota/PERMANENT/.tmp/geology has GDAL driver GTiff
> and has 466 rows and 633 columns
>
>> traceback()
> Kein traceback vefügbar
>
>> sessionInfo()
> R version 2.10.0 (2009-10-26)
> i386-pc-mingw32
>
> locale:
> [1] LC_COLLATE=German_Germany.1252  LC_CTYPE=German_Germany.1252
> [3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
> [5] LC_TIME=German_Germany.1252
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] spgrass6_0.6-11 XML_2.6-0       rgdal_0.6-20    sp_0.9-44
>
> loaded via a namespace (and not attached):
> [1] grid_2.10.0     lattice_0.17-26
>
> ###
> I hope this help to solve the problem.
>
> Martin
>
>
>
>
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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