On Sun, 23 Sep 2018, Helmut Kudrnovsky wrote:
I could reproduce the problem after starting the OSGeo4W console from the
desktop shortcut icon.
The problem seems to be that OSGeo4W's console starts in a directory for
which the user does not have write access (for me from a desktop shortcut
C:\Users\Public\Desktop\OSGeo4W). Because rgrass7::initGRASS() needs to
write a GISRC file in the working directory, it needs write access. When I
changed working directory to one to which I did have write access, the
current CRAN binary rgrass7 loaded correctly under OSGeo4W for a
throw-away location. I haven't yet tried with a pre-existing location.
Could you check and see whether this seems reasonable?
If so, I'll add a check for write access in the working directory to give
a more sensible error message.
Committed in r65 on https://r-forge.r-project.org/projects/spgrass/; the
change tests whether the working directory is writable, and if not puts
the temporary GISRC in an R temporary file. I checked Vero's scenario of
using initGRASS under OSGeo4W with an existing location (screenshot
attached) from the OSGeo4W console. I also corrected the PROJ shared files
location for GRASS (I hope). I can provide a Windows binary package
off-list if need be.
Please let me know if this gets things working.
I'm also concerned to know how rgrass7 should be maintained going forward?
Should it be on github/r-spatial ? Should it migrate to sf/raster classes?
Best wishes,
Roger
tested here with an existing location while changed the working directory to
writable directory:
----------------------
run o-help for a list of available commands
C:\>d:
D:\>cd temp
D:\temp>cd testR
D:\temp\testR>R
R version 3.4.4 (2018-03-15) -- "Someone to Lean On"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64 (64-bit)
R ist freie Software und kommt OHNE JEGLICHE GARANTIE.
Sie sind eingeladen, es unter bestimmten Bedingungen weiter zu verbreiten.
Tippen Sie 'license()' or 'licence()' für Details dazu.
R ist ein Gemeinschaftsprojekt mit vielen Beitragenden.
Tippen Sie 'contributors()' für mehr Information und 'citation()',
um zu erfahren, wie R oder R packages in Publikationen zitiert werden
können.
Tippen Sie 'demo()' für einige Demos, 'help()' für on-line Hilfe, oder
'help.start()' für eine HTML Browserschnittstelle zur Hilfe.
Tippen Sie 'q()', um R zu verlassen.
library(rgrass7)
Lade nötiges Paket: sp
Lade nötiges Paket: XML
GRASS GIS interface loaded with GRASS version: (GRASS not running)
initGRASS(gisBase = "C:/OSGeo4W64/apps/grass/grass-7.4.1",
+ gisDbase = "D:/grassdata/", location = "nc_spm_08_grass7",
+ mapset = "user1", SG="elevation")
gisdbase D:/grassdata/
location nc_spm_08_grass7
mapset user1
rows 474
columns 526
north 228527.2
south 215018.2
west 629980
east 644971
nsres 28.5
ewres 28.5
projection +proj=lcc +lat_1=36.16666666666666 +lat_2=34.33333333333334
+lat_0=33.75 +lon_0=-79 +x_0=609601.22 +y_0=0 +no_defs +a=6378137
+rf=298.257222101 +towgs84=0.000,0.000,0.000 +to_meter=1
Warnmeldung:
In dir.create(gisDbase) : 'D:\grassdata' existiert bereits
g <- gmeta()
g
gisdbase D:/grassdata/
location nc_spm_08_grass7
mapset user1
rows 474
columns 526
north 228527.2
south 215018.2
west 629980
east 644971
nsres 28.5
ewres 28.5
projection +proj=lcc +lat_1=36.16666666666666 +lat_2=34.33333333333334
+lat_0=33.75 +lon_0=-79 +x_0=609601.22 +y_0=0 +no_defs +a=6378137
+rf=298.257222101 +towgs84=0.000,0.000,0.000 +to_meter=1
---------------------
yes, the issue is that OSGeo4W's console starts in a directory for
which the user does not have write access.
changing to a directory with write access starting grass from R works as
expected.
I'll change the wiki accordingly.
If so, I'll add a check for write access in the working directory to give
a more sensible error message.
that would be helpful.
-----
best regards
Helmut
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--
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Department of Economics, Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
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