[R] topicmodels error

[David Winsemius]

I don't know the answer, but let me point out that:

"DocumentTermMatrix" %in% class(TDM) should return FALSE since:

"DocumentTermMatrix" != "TermDocumentMatrix"

--  
David.

On Oct 11, 2010, at 4:45 PM, Dario Solari wrote:

> I try to fit a LDA model to a TermDocumentMatrix with the topicmodels
> package...
> but R says:
>
>> Error in LDA(TDM, k = k, method = "Gibbs", control = list(seed =  
>> SEED,  :
>> x is of class “TermDocumentMatrix”“simple_triplet_matrix”
>
>> class(TDM)
>> [1] "TermDocumentMatrix"    "simple_triplet_matrix"
>
> I try to use a matrix... but don't work:
>
>> MAT <- as.matrix(TDM)
>> Error in LDA(MAT, k = k, method = "Gibbs", control = list(seed =  
>> SEED,  :
>> x is of class “matrix”
>
> The help say is correct to use a DocumentTermMatrix:
>> Arguments
>> x	 Object of class "DocumentTermMatrix"
>
> Can anyone help me?
> Thanks
>
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David Winsemius, MD
West Hartford, CT