Question

I am creating a Copus from a dataframe. I pass it as a VectorSource as there is only one column I want to be used as the text source. This works find however I need the document ids within the corpus to match the document ids from the dataframe. The document ids are stored in a separate column in the original dataframe.

df <- as.data.frame(t(rbind(c(1,3,5,7,8,10), 
                        c("text", "lots of text", "too much text", "where will it end",         "give peas a chance","help"))))
colnames(df) <- c("ids","textColumn")
library("tm")
library("lsa")
corpus <- Corpus(VectorSource(df[["textColumn"]]))

Running this code creates a corpus however the document ids run from 1-6. Is there any way of creating the corpus with the document ids 1,3,5,7,8,10?

Answer 1

Well, one simple but not very elegant way to assign your ids to your documents afterward could be the following :

for (i in 1:length(corpus)) {
   attr(corpus[[i]], "ID") <- df$ids[i]
}