【R】using RSAGA

1. RSAGA only accepts the version 2.0.7 or lower (2.0.4)  --2011.12.17
2. DL the SAGA 2.0.7
3. unzip it to "C:/Program Files/R/R-2.13.2/library/RSAGA/saga_vc"
    # i couldnt set the path to the "saga_xmd.exe" using "rsaga.env" function
    # other wise i have to set the path in every command... like
      > rsaga.import.gdal("dem.asc","dem",env=rsaga.env(path="E:/xxx/xxx/xxx"))