[R] create new column in a DF according to values from another column

[jeff6868]

Hi everyone,

I have a small problem in my R-code.

Imagine this DF for example:

DF <- data.frame(number=c(1,4,7,3,11,16,14,17,20,19),data=c(1:10))

I would like to add a new column "Station" in this DF. This new column must
be automatically filled with: "V1" or "V2" or "V3".
The choice must be done on the numbers (1st column).

For example, I would like to have "V1" in the column "Station" in the rows
where the numbers of the 1st column are: 1,7,11,16 ; then I would like to
have "V2" in the rows where the numbers are: 4,14,20 and finally "V3" in the
rows where the numbers are: 3,17,19.

I'm trying with "if" and something like this, but it's not working yet:
# For "V1":
if(DF$number %in% c(1,7,11,16)) {test$Station=="V1"}
# For "V2":
... 

So my final DF should look like this:

FINALDF <- data.frame(number=c(1,4,7,3,11,16,14,17,20,19),data=c(1:10),
Station=c("V1","V2","V1","V3","V1","V1","V2","V3","V2","V3"))

Could someone help me to finish this?

Thank you very much!!!





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