[R] Conditional Execution Error

[MacQueen, Don]

The simplest explanation is that
  ifelse( , , )
is not designed or intended to be an alternative way to do
  if () {} else {}

ifelse is not designed for conditional execution.

Read the help page for ifelse for an explanation of what it IS designed to
do.

-Don

-- 
Don MacQueen

Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062





On 8/11/16, 1:24 PM, "R-help on behalf of Steve Murray"
<r-help-bounces at r-project.org on behalf of smurray444 at hotmail.com> wrote:

>Dear all,
>
>
>Please could someone explain why 'Version 1' of the code below works, but
>'Version 2' produces an error (albeit following the correct output)?
>
>
>#Version 1
>
>h <- 10
>j <- -5
>
>if(h < j) {
>print("statement is true")
>} else {
>while (h >= j) {
>print(h)
>h <- h - 1
>}
>}
>
>
>#Version 2
>
>h <- 10
>j <- -5
>
>ifelse(h < j, "statement is true", while(h >= j) {
>print(h)
>h <- h - 1
>}
>)
>
>
>
>If anyone has an explanation and solution (for avoiding the error), then
>I'd be pleased to hear it.
>
>
>Many thanks,
>
>Steve
>
>
>	[[alternative HTML version deleted]]
>
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