Question

I am using the tm package to compute term-document-matrix for a dataset, I now have to write the term-document-matrix to a file but when I use the write functions in R I am getting a error.

Here is the code which I am using and the error I am getting:

data("crude")
tdm <- TermDocumentMatrix(crude, control = list(weighting = weightTfIdf, stopwords = TRUE))
dtm <- DocumentTermMatrix(crude, control = list(weighting = weightTfIdf, stopwords = TRUE))

and this is the error while I use the write.table command on this data:

Error in cat(list(...), file, sep, fill, labels, append) : argument 1 (type 'list') cannot be handled by 'cat'

I understand that tbm is a object of type Simple Triplet Matrix, but how can I write this to a simple text file.

Answer 1

I think I might be misunderstanding the question, but if all you want to do is export the term document matrix to a file, then how about this:

m <- inspect(tdm)
DF <- as.data.frame(m, stringsAsFactors = FALSE)
write.table(DF)

Is that what you’re after mate?

Hope that helps a little,

Tony Breyal