Dear R-users,
I am sorry if I ask for something that has been asked
before, however, I still could not solve my little
problem by consulting the previous thread on this
topic:
I would like to replace several values in a data
frame, such as in:
colorful
subject response
1 me black
2 me brown
3 you red
4 me black
5 you brown
read in with read.table()
I would like to replace both "black" and "brown" by
"dark".
What I have tried was:
ToBeReplaced=c("black","brown")
Replacement="dark"
test1<-replace(colorful,ToBeReplaced,Replacement)
which adds two columns:
test1
subject response black brown
1 me black dark dark
2 me brown dark dark
....
Replacing one value at a time as in:
test2<-replace(colorful$response,colorful$response=="black","dark")
gives this warning message:
In test$response :
$ operator is invalid for atomic vectors, returning
NULL
and returns all values for $response:
> test2
[1] black brown red black .....
I have tried many other things but nothing helps.
I would be very grateful for your help!!!
Thanks a lot,
Silvia
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