Jason Rupert wrote:
I would like to use grep and gsub to manipulate a vector to make the names used consistent, i.e. reduce a level or two.
This is dangerous: grep and gsub use regular expressions, so a lot of
characters (see ?regexp for the list) have special meanings.
For the kind of substitutions you want, just do things like
newlist <- tmp_test
newlist[newlist == tmp_test[2]] <- tmp_test[1]
Duncan Murdoch
However, here is what I found when I attempted to use grep and gsub:
tmp_test<-c("House 1 Plot Plus +100","House 2 Plot Plus +100","House 3 Plot Plus -100","House 4 Plot Plus
-100","House 1 Plus +100","House 2 Plus +100","House 3 Plus -100","House 4 Plus -100")
gsub(tmp_test[2], tmp_test[1], tmp_test)
[1] "House 1 Plot Plus +100" "House 2 Plot Plus +100" "House 3 Plot Plus -100" "House 4 Plot Plus -100" "House 1 Plus +100" "House 2 Plus +100"
[7] "House 3 Plus -100" "House 4 Plus -100"
grep(tmp_test[1],tmp_test)
integer(0)
However,
gsub(tmp_test[3], tmp_test[1], tmp_test)
[1] "House 1 Plot Plus +100" "House 2 Plot Plus +100" "House 1 Plot Plus +100" "House 4 Plot Plus -100" "House 1 Plus +100" "House 2 Plus +100"
[7] "House 3 Plus -100" "House 4 Plus -100"
Thanks for any feedback that can be provided.
______________________________________________
R-help@r-project.org mailing list
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.
______________________________________________
R-help@r-project.org mailing list
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.
