replace a list of values by another in R

Question

I have a dataframe with any of these values.

from=c(\"A\",\"C\",\"G\",\"T\",\"R\",\"Y\",\"M\",\"K\",\"W\", \"S\",\"N\")

and I want to replace a

Answer 1

matrix(to[match(dd,from)], nrow=nrow(dd))

match returns a vector without dimensions, so you need to recreate the matrix.