On Nov 10, 2012, at 2:07 PM, scoyoc wrote:
> I want my for loop to test for the presence of a term in a vector and return
> a value to a new vector. I'm not writing it correctly though. Here's what I
> have...
>
>> testfor = letters[1:5]
>> x = c("a", "b", "e", "f", "g")
>> result = rep(NA, length(testfor))
>>
>> for (i in testfor){
> + v = any(x == testfor[i])
> + result[i] = v
> + }
>>
>> result
> a b c d e
> NA NA NA NA NA NA NA NA NA NA
>
> I would like to get....
>
>> result
> TRUE TRUE TRUE FALSE FALSE
>
Looks like yu want the first of these:
> x %in% testfor
[1] TRUE TRUE TRUE FALSE FALSE
> testfor %in% x
[1] TRUE TRUE FALSE FALSE TRUE
--
David Winsemius, MD
Alameda, CA, USA
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