[R-sig-Geo] RSAGA catchment area (flow tracing) with AsterGDEM

[N. Anselm]

dear list,

I use R for scripting in saga gis. Mostly it works fine, but I dont 
know why the catchment area (flow tracing) does not work with the ASTER 
scene. In saga it works,
so it should be something in my 'code'. I tried METHOD as well as 
Method (there seems to be inconsistency in saga), I tried 
CORRECT=FALSE,False,0 and not,
none of it worked, possibly it's something completely different.

Maybe someone of you can give advice?
thank you very much,

n. anselm




workenv<-rsaga.env(workspace=".",path="/usr/bin",modules="/usr/lib/saga")

rsaga.geoprocessor(lib="ta_hydrology",module=2,env=workenv,param=list(DEM="aster_nosink.sgrd",CAREA="aster_catchmentarea",CSLOPE="aster_catchmentslope",STEP=1,Method=0,MINDQV=0.0,CORRECT=FALSE))

> sessionInfo()
R version 2.14.1 (2011-12-22)
Platform: i686-pc-linux-gnu (32-bit)

locale:
  [1] LC_CTYPE=de_DE.UTF-8          LC_NUMERIC=C
  [3] LC_TIME=de_DE.UTF-8           LC_COLLATE=de_DE.UTF-8
  [5] LC_MONETARY=de_DE.UTF-8       LC_MESSAGES=de_DE.UTF-8
  [7] LC_PAPER=de_DE.UTF-8          LC_NAME=de_DE.UTF-8
  [9] LC_ADDRESS=de_DE.UTF-8        LC_TELEPHONE=de_DE.UTF-8
[11] LC_MEASUREMENT=de_DE.UTF-8    LC_IDENTIFICATION=de_DE.UTF-8

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

other attached packages:
[1] raster_2.0-41  RSAGA_0.93-2   plyr_1.8       shapefiles_0.7 
foreign_0.8-48
[6] gstat_1.0-16   sp_1.0-5       rkward_0.5.6

loaded via a namespace (and not attached):
[1] grid_2.14.1      intervals_0.13.3 lattice_0.20-0   spacetime_1.0-4
[5] tools_2.14.1     xts_0.9-3        zoo_1.7-9