[GRASS-stats] Using GRASS addons in R on Windows

[Helmut Kudrnovsky]

>http://win-builder.r-project.org/KJJJkeazt7Sw/rgrass7_0.1-5.zip
>
>Could users of initGRASS() please check that the environment variables are
>set correctly for addons? 

> sessionInfo()
R version 3.2.3 (2015-12-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

locale:
[1] LC_COLLATE=German_Austria.1252  LC_CTYPE=German_Austria.1252   
LC_MONETARY=German_Austria.1252 LC_NUMERIC=C                   
[5] LC_TIME=German_Austria.1252    

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

other attached packages:
[1] rgrass7_0.1-5 XML_3.98-1.3  sp_1.2-2     

loaded via a namespace (and not attached):
[1] grid_3.2.3      lattice_0.20-33

> library(rgrass7)
Lade nötiges Paket: sp
Lade nötiges Paket: XML
GRASS GIS interface loaded with GRASS version: (GRASS not running)

> initGRASS("C:/Program Files/GRASS GIS 7.1.svn", home=tempdir(),
> gisDbase="C:/grassdata", location="nc_spm_08", mapset="user1")
gisdbase    C:/grassdata 
location    nc_spm_08 
mapset      user1 
rows        6 
columns     8 
north       222800 
south       222740 
west        642590 
east        642670 
nsres       10 
ewres       10 
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 

> execGRASS("g.region", raster="elevation", align="elevation", flags="a")

> execGRASS("r.slope.aspect", elevation="elevation", slope="myslope",
> aspect="myaspect")

Expositions-Rasterkarte <myaspect> komplett.
Neigungs-Rasterkarte <myslope> komplett.
> execGRASS("r.roughness.vector", elevation="elevation", slope="myslope",
> aspect="myaspect", strength="vectorstrength")
----
Check if input files exist ...
----
Define default output names when not defined by user ...
----
Calculate compass aspect values ...
----
Calculate colatitude ...
----
Calculate direction cosines ...
----
Calculate sum of direction cosines ...
Calculating sum of X direction cosines ...

Calculating sum of Y direction cosines ...

Calculating sum of Z direction cosines ...

----
Calculate vector strength ...
----
Calculate inverted Fisher's K parameter ...
----
Result maps:
vectorstrength
elevation_fisher_1K_3x3
Calculations done.
----

> execGRASS("r.reclass.area", input="zipcodes",
> output="zipcode_larger2000ha", value=2000, mode="greater")
Generating a clumped raster file ...
Pass 1 of 2...

Generating renumbering scheme...

Pass 2 of 2...

r.clump komplett. 16 clumps.
Generating a reclass map with area size greater than or equal to
2000.000000 hectares...

Generating output raster map <zipcode_larger2000ha>...
> 

it seems to work properly in:

R version 3.2.3 (2015-12-10) -- "Wooden Christmas-Tree"
Copyright (C) 2015 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64 (64-bit)

thanks!



-----
best regards
Helmut
--
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