Default dimnames() converts a zero-length character vector to NULL,
leading to the improper functioning of subsetting functions. These are safer
methods to set the dimnames of a dfm or fcm object.
set_dfm_dimnames(x) <- value
set_dfm_docnames(x) <- value
set_dfm_featnames(x) <- value
set_fcm_dimnames(x) <- value
set_fcm_featnames(x) <- value
Arguments
- x
dfm or fcm
- value
character a vector for docnames or featnames or a list of them
for dimnames
Examples
dfmat <- dfm(tokens(c("a a b b c", "b b b c")))
quanteda:::set_dfm_featnames(dfmat) <- paste0("feature", 1:3)
quanteda:::set_dfm_docnames(dfmat) <- paste0("DOC", 1:2)
quanteda:::set_dfm_dimnames(dfmat) <- list(c("docA", "docB"), LETTERS[1:3])