man-roxygen/recode.R

In mbojan/recode: Recoding Vectors

# Input vector
x <- c(1,2,3,4,3,2,1)

# Recoding with rules as a matrix
rmat <- matrix( c(1, 10, 4, 40), 2, 2, byrow=TRUE)
data.frame(
  old=x,
  new=recode(x, rmat)
)

# Recoding with a data frame
d <- data.frame(from = c(2, 3),
                to = c("two", "three") )
data.frame(
  old = x,
  new = recode(x, d)
)



# Recoding with rule sets
r <- recode(x,
            c(1,2), "one or two",
            c(3,4), "three or four",
            5, "five")
data.frame(old=x, new=r)