Tirsdag 17. februar 2015 15.50.27 skrev David Winsemius: > On Feb 17, 2015, at 3:58 AM, Knut Hansen wrote: > > Dear list, > > > > I have a vector: > > my.vector <- c("A", "B", "C", "D", "E", "F", "G") > > > > and two other: > > vec1 <- c("p", "q", "r", "s", "t") > > vec2 <- c("x", "y", "z") > > > > I want to substitute elements "b" and "e" in my.vector with vectors vec1 > > and vec2 respectively so that the result becomes the vector: > > c("A", "p", "q", "r" , "s" , "t", "C" , "D", "x", "y", "z", "F", "G") > > > > my.vlist <- setNames(as.list(my.vector),my.vector) > > replist <- list(B=vec1, E=vec2) > > my.vlist[c("B","E")] <- replist > > unlist(my.vlist) > > A B1 B2 B3 B4 B5 C D E1 E2 E3 F G > "A" "p" "q" "r" "s" "t" "C" "D" "x" "y" "z" "F" "G" > > Could also have used: > > my.vlist[ names(replist) ] <- replist > > .... which I think illustrates the value of character indexing of lists for > assignment even better. > > The ordering of the elements is important. > > > > Knut Hansen > > David Winsemius > Alameda, CA, USA
Thank you. This was what I was looking for. I was not aware of named lists in R, and I was about to write a script in Python to fix this. Knut Hansen ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.