[GRASS-stats] error when trying to start GRASS from Rstudio in Windows

[Helmut Kudrnovsky]

Veronica Andreo wrote
> Hi
> 
> I taught a GRASS course last week and all students got the same error when
> trying to init GRASS from R or Rstudio (in all cases grass was installed
> through OSGeo4W installer).
> 
> Here´s the command we used (paths must be adapted accordingly):
> 
> initGRASS(gisBase = "C:/OSGeo4W64/apps/grass/grass-7.4.2RC2",
>           gisDbase = "C:/Users/RETA/Documents/grassdata",
>           location = "nc_spm_08_grass7",
>           mapset = "user1",
>           SG = "elevation")
> 
> The pop-up error is a missing iconv.dll. See screenshot attached. I
> believe
> all locales were in Spanish as well as the laptop I am testing now. After
> many attempts to try to close the pop-up error, we got the following in
> the
> Rstudio console:
> 
> Error in if (!compatible) { : argument is of length zeroIn addition:
> Warning messages:1: In system(paste("g.dirseps.exe -g",
> shQuote(Sys.getenv("GISRC"))),  :  running command 'g.dirseps.exe -g
> "junk"' had status 3092: In system(paste("g.dirseps.exe -g",
> shQuote(gisDbase)), intern = TRUE) :  running command 'g.dirseps.exe
> -g "C:/Users/RETA/Documents/grassdata"' had status 3093: In
> dir.create(loc_path) :  cannot create dir 'NA\nc_spm_08_grass7',
> reason 'No such file or directory'4: In dir.create(paste(loc_path,
> "PERMANENT", sep = "/")) :  cannot create dir
> 'NA\nc_spm_08_grass7\PERMANENT', reason 'No such file or directory'5:
> In dir.create(paste(loc_path, mapset, sep = "/")) :  cannot create dir
> 'NA\nc_spm_08_grass7\user1', reason 'No such file or directory'6: In
> system(paste("g.version", get("addEXE", envir = .GRASS_CACHE),  :
> running command 'g.version.exe' had status 309
> 
> Is this grass or windows problem? I did not get this error in this same
> laptop a month ago when Roger fixed some other problems. Seems that
> something changed meanwhile.

tested here now with

----------------
System Info                                                                     
GRASS version: 7.4.2                                                            
GRASS SVN revision: r73591                                                      
Build date: 2018-10-23                                                          
Build platform: x86_64-w64-mingw32                                              
GDAL: 2.3.2                                                                     
PROJ.4: 5.2.0                                                                   
GEOS: 3.7.0                                                                     
SQLite: 3.17.0                                                                  
Python: 2.7.14                                                                  
wxPython: 2.8.12.1                                                              
Platform: Windows-10-10.0.17134 (OSGeo4W) 
-----------------

----------------
 > sessionInfo()
R version 3.4.4 (2018-03-15)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 17134)

Matrix products: default

l
[1] LC_COLLATE=German_Austria.1252  LC_CTYPE=German_Austria.1252   
LC_MONETARY=German_Austria.1252 LC_NUMERIC=C                   
LC_TIME=German_Austria.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] rgrass7_0.1-10 XML_3.98-1.11  sp_1.3-1      

loaded via a namespace (and not attached):
[1] compiler_3.4.4  grid_3.4.4      lattice_0.20-35
                                          
-----------------                                     

confirmed, also here a iconv.dll-issue (missing iconv.dll); and also
confirmed that it worked a month or so ago.

closer look at the error message and the used dependencies:

winGRASS 7.4.2 is now compiled against GDAL: 2.3.2 and PROJ.4: 5.2.0

when I tried a month or so ago, winGRASS was compiled against GDAL 2.0.X (or
similar) and PROJ.4 4.9. (or similar).

it seems there could be a dll mismatch between old and new dependencies
versions; hence the iconv.dll issue.                                                     






-----
best regards
Helmut
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