[R] glmutli package assistance please

[Michael Dewey]

Dear Bert

Since glmulti operates on glm/lm models I think, although I agree about 
not cross-posting, that it was OK here. Perhaps I do not understand the 
full significance of mixed models though.

Michael

On 15/11/2018 15:43, Bert Gunter wrote:
> Please do not cross post (see te posting guide). This should go only
> to the mixed models list.
> 
> -- Bert
> 
> Bert Gunter
> 
> "The trouble with having an open mind is that people keep coming along
> and sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
> 
> On Thu, Nov 15, 2018 at 3:47 AM Bill Poling <Bill.Poling using zelis.com> wrote:
>>
>> Hi, I have removed the pdf which was causing my e-mail to be blocked by moderators, my apologies.
>>
>> https://www.jstatsoft.org/article/view/v034i12/v34i12.pdf
>>
>> Original post:
>>
>> Hello. I am still trying to get some of the examples in this glmulti pdf to work with my data.
>>
>> I have sent e-mails to author addresses provided but no response or bounced back as in valid.
>>
>> I am not sure if this is more likely to receive support on r-help or r-sig-mixed-models, hence the double posting, my apologies in advance.
>>
>> I am windows 10 -- R3.5.1 -- RStudio Version 1.1.456
>>
>> glmulti: An R Package for Easy Automated Model Selection with (Generalized) Linear Models
>>
>> pdf Attached:
>>
>> On page 13 section 3.1 of the pdf they describe a routine to estimate the candidate models possible.
>>
>> Their data description:
>> The number of levels factors have does not affect the number of candidate models, only their complexity. We use a data frame dod, containing as a first column a dummy response variable, the next 6 columns are dummy factors with three levels, and the last six are dummy covariates.
>> To compute the number of candidate models when there are between 1 and 6 factors and 1 and 6 covariates, we call glmulti with method = "d" and data = dod. We use names(dod) to specify the names of the response variable and of the predictors. We vary the number of factors and covariates, this way:
>>
>>
>> Their routine:
>> dd <- matrix(nc = 6, nr = 6) for(i in 1:6) for(j in 1:6) dd[i, j] <- glmulti(names(dod)[1],
>> + names(dod)[c(2:(1 + i), 8:(7 + j))], data = dod, method = "d")
>>
>> My data, I organized it similar to the example, Response, Factor, Factor, 5 covariates
>>
>> Classes 'data.table' and 'data.frame':23141 obs. of  8 variables:
>>   $ Editnumber2    : num  0 0 1 1 1 1 1 1 1 1 ...
>>   $ PatientGender  : Factor w/ 3 levels "F","M","U": 1 1 2 2 2 2 1 1 1 1 ...
>>   $ B1             : Factor w/ 14 levels "Z","A","C","D",..: 2 2 3 3 2 2 2 2 2 2 ...
>>   $ SavingsReversed: num  -0.139 -0.139 -0.139 -0.139 -0.139 ...
>>   $ productID      : int  3 3 3 3 3 3 3 3 1 1 ...
>>   $ ProviderID     : int  113676 113676 113964 113964 114278 114278 114278 114278 114278 114278 ...
>>   $ ModCnt         : int  0 0 0 0 1 1 1 1 1 1 ...
>>   $ B2             : num  -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...
>>   - attr(*, ".internal.selfref")=<externalptr>
>>
>> Trying to follow what they did, my routine, Editnumber2 is the response variable:
>>
>> dd <- matrix(nc = 2, nr = 5)
>> for(i in 1:2) for(j in 1:5) dd[i, j] <- glmulti(names(r1)[1], names(r1)[c(2:(1 + i), 7:(6 + j))], data = r1, method = "d")
>>
>> The error: Error in terms.formula(formula, data = data) :
>>    invalid model formula in ExtractVars
>>
>> I have tried changing the numbers around but get results like this:
>>
>> Initialization...
>> TASK: Diagnostic of candidate set.
>> Sample size: 23141
>> 2 factor(s).
>> 2 covariate(s). <--appears to be missing 3 of the covariates for some reason?
>> 0 f exclusion(s).
>> 0 c exclusion(s).
>> 0 f:f exclusion(s).
>> 0 c:c exclusion(s).
>> 0 f:c exclusion(s).
>> Size constraints: min =  0 max = -1
>> Complexity constraints: min =  0 max = -1 Your candidate set contains 250 models.
>> Error in `[<-`(`*tmp*`, i, j, value = glmulti(names(r1)[1], names(r1)[c(2:(1 +  :
>>    subscript out of bounds
>>
>>
>> I hope someone can help straighten out my code, thank you.
>>
>>
>> WHP
>>
>>
>>
>> Confidentiality Notice This message is sent from Zelis. ...{{dropped:13}}
>>
>> ______________________________________________
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>> and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 

-- 
Michael
http://www.dewey.myzen.co.uk/home.html