On Mar 21, 2013, at 8:30 AM, Andras Farkas wrote: > Pikal and Robert, > > sorry for previous email, indeed, the code is working just fine! > > Thanks for the pointer David Winsemius, you were right, I was getting a > character as "numeric(0)", which the system did not recognize as the number > 0, thus the openBUGS run was called.
That is NOT zero. Actually you were getting a vector of length == 0. > numeric(0) == 0 logical(0) > isTRUE(numeric(0) == 0) [1] FALSE Some sort of selection activity apparently found no matches: > (1:10)[(1:10) < 0] integer(0) Another potential source of error would be passing an alphabetic value: "e" > 0 #[1] TRUE -- David. > > Thanks for the help guys! > > Andras > > --- On Wed, 3/20/13, Robert Baer <rb...@atsu.edu> wrote: > > > From: Robert Baer <rb...@atsu.edu> > Subject: Re: [R] how to skip part of the code > To: "PIKAL Petr" <petr.pi...@precheza.cz> > Cc: "Andras Farkas" <motyoc...@yahoo.com>, "r-help@r-project.org" > <r-help@r-project.org> > Date: Wednesday, March 20, 2013, 9:27 AM > > > On 3/20/2013 8:21 AM, PIKAL Petr wrote: >> Hi >> >>> -----Original Message----- >>> From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- >>> project.org] On Behalf Of Andras Farkas >>> Sent: Wednesday, March 20, 2013 2:11 PM >>> To: r-help@r-project.org >>> Subject: [R] how to skip part of the code >>> >>> Dear All, >>> >>> another quick question, this one is on skipping part of my code, so let >>> us say: >>> >>> a <-5 >>> b <-2 >>> e <-0 >>> >>> d <-a+b >>> f <-a-b >>> >>> what I would like to do is to have R NOT to calculate the value for d >>> in case the value of e equals to zero (essentially skip that "chunk"), >>> but instead move on to calculate te value for f. In the code I am >>> working with the value of e changes, and I would like to calculate d >>> and f at all times when the value of e is greater then zero. If >>> possible, I would like to do this without using the functions "ifelse" >>> and "if else" >> Why? This is exactly the reason for which if else was invented? >> >> I am not sure if some simple solution without if is available. >> >> if (e > 0) { d <- a+b; f <- a-b } >> >> seems to be simple. >> >> Regards >> Petr > I second Petr on the question, why not use if? But this might meet your > criteria. > a <- 5 > b <- 2 > e <- 0 > > # > dat <- data.frame(a, b, e) > > > dat$d[dat$e > 0] <- a + b > dat$f <- a - b > > > >>> appreciate the help, >>> >>> Andras >>> [[alternative HTML version deleted]] >> ______________________________________________ >> 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. > > > -- > > Robert W. Baer, Ph.D. > Professor of Physiology > Kirksille College of Osteopathic Medicine > A. T. Still University of Health Sciences > Kirksville, MO 63501 USA > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. David Winsemius Alameda, CA, USA ______________________________________________ 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.
