[Biomod-commits] use YWeights or not: nothing changes

[Luigi Maiorano]

Hi all

I have a question about using Yweights in BIOMOD_Modeling. Basically if I set it to null, or if I give it values nothing changes (and when I say nothing, I am saying that the cell values for all models are identical!). Is there a bug here? any hint?
I'm in R2.15.2 with Biomod2 2.0.0. The two command lines that I am using are: 
# RUN THE MODELS WITH WEIGHTS
ftBiomodModelOut_W <- BIOMOD_Modeling(ftBiomodData, models=c('GLM', 'GBM', 'GAM', 'ANN', 'CTA', 'MARS', 'RF'), models.options=ftBiomodOption, NbRunEval=1, DataSplit=80, Yweights=ftWeight, VarImport=3,models.eval.meth=c('TSS', 'ROC'), SaveObj=TRUE, rescal.all.models=TRUE)

#RUN THE MODELS WITHOUT WEIGHTS
ftBiomodModelOut <- BIOMOD_Modeling(ftBiomodData, models=c('GLM', 'GBM', 'GAM', 'ANN', 'CTA', 'MARS', 'RF'), models.options=ftBiomodOption, NbRunEval=1, DataSplit=80, Yweights=NULL, VarImport=3,models.eval.meth=c('TSS', 'ROC'), SaveObj=TRUE, rescal.all.models=TRUE)


thanks for the help

Luigi

-------------------------------------------------------------------------------
Dr. Luigi Maiorano
Dipartimento di Biologia e Biotecnologie "Charles Darwin"
Università di Roma "La Sapienza"
viale dell'Università 32
00185 Roma
tel: +39 0649694262
fax: +39 06491135

Email: luigi.maiorano at uniroma1.it