【R】RSAGA -watershed delineation-

make watershed raster using SAGA

#load plugins
library(RSAGA)

#set working directory
setwd("e:/ws_saga")

#set working environment
rsaga.env(path="e:/ws_saga/saga_207", check.SAGA=FALSE)

#read raster layer (converting "dem.img"file to "dem.sgrd")
rsaga.import.gdal("dem.img","dem",env=rsaga.env(path="e:/ws_saga/saga_207"))

#watershed (fill sink)
rsaga.fill.sinks("dem","filldem" method="wang.liu.2001", "fdir" "watershed",env=rsaga.env(path="e:/ws_saga/saga_207"))