On 02-10-2014, at 11:01, r...@openmailbox.org wrote:
> Subscribers,
>
> What is the correct syntax to apply the 'if else' conditional statement to
> vector objects?
>
> Example:
>
> vectorx<-c(50,50,20,70)
> vectory<-c(50,50,20,20)
> vectorz<-function () {
> if (vectorx>vectory)
> vectorx
> else vectorx<-0
> }
>
> vectorz()
> Warning message:
> In if (vectorx > vectory) vectorx else vectorx <- 0 :
> the condition has length > 1 and only the first element will be used
>
> The help manual (?'if') explains that only length=0 is acceptable; what is an
> appropriate alternative function to use please?
>
And at the bottom of that page (section See Also) there is a reference to
ifelse. Why didn’t you have a look at that?
Replace your complete if/else statement with ifelse(vectorx>vectory,vectorx,0)
Berend
>
> 0 0 0 70
>
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