is this what you want?
> vector1
[1] 65 1 34 100 42 20 79 43 89 10
> vector2
[1] 34 65 47 91 48 32 23 74 92 86
>
> for (i in 1:10) {
+ for (j in 1:10) {
+ if (vector1[i] == vector2[j])
+ show(c(i,j))
+ }
+ }
[1] 1 2
[1] 3 1
On Sat, Nov 8, 2008 at 8:22 AM, David Croll <[EMAIL PROTECTED]> wrote:
> Hello dear R people,
>
>
> for my MSc thesis I need to program some functions, and some of them simply
> do not work. In the following example, I made sure both vectors have the
> same length (10), but R gives me the following error:
>
> Error in if (vector1[i] == vector2[j]) { :
> missing value where TRUE/FALSE needed
>
> I googled for possible solutions, but I did not find a good explanation for
> this...
>
>
> The code:
>
> test <- function() {
> vector1 <- sample(1:100,10)
> vector2 <- sample(1:100,10)
> for (i in vector1) {
> for (j in vector2) {
> if (vector1[i] == vector2[j]) {
> show(list(i,j))
> }
> }
> }
> }
>
> Regards, David
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
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