Get the n-th previous element of a vector
Get the n-th previous element of a vector
txt_previous(x, n = 1)
x |
a character vector where each element is just 1 term or word |
n |
an integer indicating how far to look back. Defaults to 1. |
a character vector of the same length of x with the previous element
x <- sprintf("%s%s", LETTERS, 1:26)
txt_previous(x, n = 1)
data.frame(word = x,
word_previous1 = txt_previous(x, n = 1),
word_previous2 = txt_previous(x, n = 2),
stringsAsFactors = FALSE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.