[Biomod-commits] Problem with projection by BIOMOD to raster files

Horchler at bafg.de Horchler at bafg.de
Mon Feb 14 17:34:06 CET 2011

Dear list members,

I would like to project BIOMOD results (best model) to a raster file in order to import it into ArcGIS 9.3.
I tried a rather simple example with two predictor variables and two species as response variables but got the following error message:

> Error in xzfile(file, "wb", compression = 9) : 
  cannot open connection 

Here is what I types in R:

a<- read.csv2("E:\\data.csv", h=T, row.names=1)


vmhq = raster("E:/vmhq")
UFD = raster("E:/UFD")
Var = stack(vmhq, UFD)

Sp.Env <- a[c(1:2, 6:11)]

CoorXY <- a[1:2]

Initial.State(Response=a[,9:10], Explanatory=a[,6:7],
IndependentResponse=a[,9:10], IndependentExplanatory=a[,6:7])

Models(GLM = TRUE, TypeGLM = "quad", Test = "AIC", CTA = TRUE, CV.tree = 50, ANN = TRUE, CV.ann = 2,
   NbRunEval = 2, DataSplit = 80, Roc=TRUE, Optimized.Threshold.Roc=TRUE, Kappa=TRUE, TSS=TRUE, VarImport=5,
   NbRepPA=0, strategy="circles", coor=CoorXY, distance=2, nb.absences=1000)

Projection.raster(RasterProj = Var, Proj.name="Istzust", GLM=TRUE, BinKappa=TRUE, FiltKappa=TRUE)

> Fehler in xzfile(file, "wb", compression = 9) : 
  kann Verbindung nicht öffnen

which means:
Error in xzfile(file, "wb", compression = 9) : 
  cannot open connection

Could you please let me know what's wrong.
Many thanks in advance!

Best rergards,


Dr. Peter J. Horchler

German Federal Institute of Hydrology
Department Ecological Interactions

Am Mainzer Tor 1
56068 Koblenz

Tel.	  +49-261-1306-5936
Fax.	  +49-261-1306-5333
E-mail  horchler at bafg.de


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