I am following the exercise on this link: https://data.library.virginia.edu/reading-pdf-files-into-r-for-text-mining/
In the section of Inspect:
inspect(opinions.tdm[1:10,])
I got this message, and I cannot follow.
Error in [.simple_triplet_matrix
(articles.tdm, 1:10, ) :
subscript out of bounds
Somebody can help me please! Thanks