Re: [R] the ifelse function

2007-05-06 Thread Peter Dalgaard
Jennifer Dillon wrote: Hi Everyone, I think I found a problem with the ifelse function: If the condition argument is NA, it treats it as true. Anyone agree or disagree with this? Jen I don't see it doing that: ifelse(NA,1,0) [1] NA so what do you mean?

[R] the ifelse function

2007-05-05 Thread Jennifer Dillon
Hi Everyone, I think I found a problem with the ifelse function: If the condition argument is NA, it treats it as true. Anyone agree or disagree with this? Jen -- Jennifer Dillon Doctoral Student Harvard Biostatistics Room 414B, Building 1 [[alternative HTML version deleted]]

Re: [R] the ifelse function

2007-05-05 Thread Chuck Cleland
Jennifer Dillon wrote: Hi Everyone, I think I found a problem with the ifelse function: If the condition argument is NA, it treats it as true. Anyone agree or disagree with this? I disagree. ifelse(c(5,4,NA) == 5, 1, 0) [1] 1 0 NA Jen -- Chuck Cleland, Ph.D. NDRI, Inc. 71 West

Re: [R] the ifelse function

2007-05-05 Thread jim holtman
Can you proovide the example you are talking about. Here is what I got: ifelse(NA,1,2) [1] NA On 5/5/07, Jennifer Dillon [EMAIL PROTECTED] wrote: Hi Everyone, I think I found a problem with the ifelse function: If the condition argument is NA, it treats it as true. Anyone agree or