Re: [R] Missing values in function calls

2010-08-18 Thread Greg Snow
?missing -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of vo...@cbox.cz > Sent: Tuesday, August 17, 2010 6:22

Re: [R] Missing values in function calls

2010-08-17 Thread David Winsemius
On Aug 17, 2010, at 8:22 AM, wrote: Hello, I would like to ask you how to determine if function value is missing for particular function call. I mean if I define function ?is.na f David Winsemius, MD West Hartford, CT __ R-help@r-projec