link2GI (version 0.5-3)

paramGRASSw: Usually for internally usage get 'GRASS GIS' and rgrass parameters on 'Windows' OS

Description

Initialize the enviroment variables on a 'Windows' OS for using 'GRASS GIS' via rgrass

Usage

paramGRASSw(
  set_default_GRASS = NULL,
  DL = "C:",
  ver_select = FALSE,
  quiet = TRUE
)

Arguments

set_default_GRASS

default = NULL forces a full search for 'GRASS GIS' binaries. You may alternatively provide a vector containing pathes and keywords. c("C:/OSGeo4W64","grass-7.0.5","osgeo4w") is valid for a typical osgeo4w installation.

DL

character search location default = C:

ver_select

boolean default is FALSE. If there is more than one 'SAGA GIS' installation and ver_select = TRUE the user can select interactively the preferred 'SAGA GIS' version

quiet

boolean switch for supressing console messages default is TRUE

Details

The concept is very straightforward but for an all days usage pretty helpful. You need to provide a terra or a sf object. The derived properties are used to initialize a temporary but static rgrass environment. During the rsession you will have full access to GRASS7 both via the wrapper package as well as the command line. paramGRASSw initializes the usage of GRASS7.

Examples

run = FALSE
if (run) {
# automatic retrieval of valid 'GRASS GIS' environment settings 
# if more than one is found the user has to choose.
paramGRASSw()

# typical OSGeo4W64 installation
paramGRASSw(c("C:/OSGeo4W64","grass-7.0.5","osgeo4W"))
}