[Biomod-commits] Warning messages from BIOMOD_Modeling function

[Marco Girardello]

Dear BIOMOD list,

I am trying use a couple of methods from the BIOMOD_Modeling function
(biomod2), but I get some warning messages which I do not understand.
Below you will find a reproducible example. The surprising thing about
the warnings is that at least two of them are referred to the method
"GLM", which I did not use for the analysis.  Is this a bug? Or
something that I do not understand?

any help would be greatly appreciated!


Best wishes,

Marco




####
dat<-read.csv("http://dl.dropbox.com/u/33966347/spec2.csv")

myBiomodData <- BIOMOD_FormatingData(resp.var = as.numeric(dat$resp),
                                       expl.var = dat[4:19],
                                       resp.xy = dat[1:2],
                                       resp.name = "spec2")


myBiomodOption <-
BIOMOD_ModelingOptions(GLM=NULL,GBM=list(n.trees=2000),GAM=NULL,CTA=NULL,ANN=NULL,SRE=NULL,FDA=NULL,MARS=NULL,MAXENT=NULL)


### Modelling
myBiomodModelOut <- BIOMOD_Modeling(
                             myBiomodData,
                             models = c("GBM","RF"),
                             models.options = myBiomodOption,
                             NbRunEval=1,
                             DataSplit=80,
                             Yweights=NULL,
                             VarImport=0,
                             models.eval.meth = c('TSS','ROC'),
                             SaveObj = TRUE,
                             rescal.all.models = TRUE)


Warning messages:
1: In max(i) : no non-missing arguments to max; returning -Inf
2: In max(i) : no non-missing arguments to max; returning -Inf
3: In max(i) : no non-missing arguments to max; returning -Inf
4: In max(i) : no non-missing arguments to max; returning -Inf
5: glm.fit: algorithm did not converge
6: glm.fit: fitted probabilities numerically 0 or 1 occurred
7: In is.na(object) :
  is.na() applied to non-(list or vector) of type 'NULL'