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

[Wilfried Thuiller]

HI Luigi,
What is in ftWeight? Are they equal weighed for every row or not? 
Cheers
Wilfried



Le 12 févr. 2013 à 12:38, Luigi Maiorano a écrit :

> 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
> 
> 
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--------------------------
Dr. Wilfried Thuiller
Laboratoire d'Ecologie Alpine, UMR CNRS 5553
Université Joseph Fourier
BP53, 38041 Grenoble cedex 9, France
tel: +33 (0)4 76 51 44 97
fax: +33 (0)4 76 51 42 79

Email: wilfried.thuiller at ujf-grenoble.fr
Personal website: http://www.will.chez-alice.fr
Team website: http://www-leca.ujf-grenoble.fr/equipes/emabio.htm

ERC Starting Grant TEEMBIO project: http://www.will.chez-alice.fr/Research.html
FP6 European EcoChange project: http://www.ecochange-project.eu