y <- c("a","b","c")
if("a" in y)
{
# "a" is not in y
}
You are 98% of the way there. The missing two percent is this:
if("a" %in% y) {
...
}you could also use the 'any' function:
if(any(y=="a")){
...
}Also, is there a way to generate character sequences similar to numeric sequences, e.g. something like "A":"J" ? I remember having seen a command doing this somewhere, but can't find it anymore
R defines two vectors, "letters" and "LETTERS" which have the 26 lower and upper-case letters of the English alphabet. Subset from them to get what you want.
Baz
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