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

[Damien Georges]

Hi again,

You found a bug.. Weights were not correctly handled (typo in code)...
It is corrected now (biomod2 2.0.7)

Cheers,

Damien.

On 12/02/2013 12:48, Luigi Maiorano wrote:
> Ciao Damien
>
> no: I was working with atlas data, so I do have presence and absences
>
> L
> -------------------------------------------------------------------------------
> 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 <mailto:luigi.maiorano at uniroma1.it>
>
>
>
> Il giorno 12/feb/2013, alle ore 12:37, Damien Georges 
> <damien.georges2 at gmail.com <mailto:damien.georges2 at gmail.com>> ha scritto:
>
>> Hi Luigi,
>>
>> Are you working with Pseudo-absences ?
>> Because in this case, weights are ignored and but some are created to 
>> fit a given prevalence (.5 by default).
>>
>> Cheers,
>>
>> Damien
>>
>> On 12/02/2013 12:38, Luigi Maiorano wrote:
>>> 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 <mailto:luigi.maiorano at uniroma1.it>
>>>
>>>
>>>
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>>
>