[R] Question about range of letters

[Robert Baer]

On 10/4/2014 8:21 AM, Nia Gupta wrote:
> Hello,
>
> I have a column with a bunch of letters. I would like to keep some of these letters (A,C,D,L) and turn the rest into 'X'.
>
> I have tried using ifelse with '|' in between the argument but it didn't work nor did 4 separate ifelse statements.
>
> Example, I currently have:
> Letters    A    B    C    D    E
> I would like to have:
> Letters    A    X    C    D    X
> Thank you
>
> 	[[alternative HTML version deleted]]
try:
let = sample(LETTERS[1:5],100,replace=TRUE)
let
let1 =  ifelse(let %in% c('A','C','D'),let,'X')
let1

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