Thanks again Joris - you've been very helpful J
From: Joris FA Meys [via R] [mailto:ml-node+2267176-1824205151-120...@n4.nabble.com] Sent: 24 June 2010 16:40 To: Paul Chatfield Subject: Re: How to say "if error" You could do that using the options, eg : set.seed(1) x <- rnorm(1:10) y <- letters[1:10] z <- rnorm(1:10) warn <-getOption("warn") options(warn=2) for (i in list(x,y,z)){ cc <- try(mean(i), silent=T) if(is(cc,"try-error")) {next} print(cc) } options(warn=warn) see ?options under "warn" Cheers Joris On Thu, Jun 24, 2010 at 5:12 PM, Paul Chatfield <[hidden email]> wrote: > > On a similar issue, how can you detect a warning in a loop - e.g. the > following gives a warning, so I'd like to set up code to recognise that and > then carry on in a loop > > x<-rnorm(2);y<-c(1,0) > ff<-glm(y/23~x, family=binomial) > > so this would be incorporated into a loop that might be > > x<-rnorm(10);y<-rep(c(1,0),5) > for (i in 1:10) > {ee<-glm(y~x, family=binomial) > ff<-glm(y/23~x, family=binomial)} > > from which I would recognise the warning in ff and not those in ee, saving > results from ee and not from ff. The last bit would be easy adding a line > if(there_is_a_warning_message) {newvector<-NA} else {use results} but how do > you detect the warning message? > > Thanks all for your feedback so far, > > Paul > -- > View this message in context: http://r.789695.n4.nabble.com/How-to-say-if-error-tp2266619p2267140.html <http://r.789695.n4.nabble.com/How-to-say-if-error-tp2266619p2267140.htm l?by-user=t> > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > [hidden email] 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. > -- Joris Meys Statistical consultant Ghent University Faculty of Bioscience Engineering Department of Applied mathematics, biometrics and process control tel : +32 9 264 59 87 [hidden email] ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php ______________________________________________ [hidden email] 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. ________________________________ View message @ http://r.789695.n4.nabble.com/How-to-say-if-error-tp2266619p2267176.html To unsubscribe from Re: How to say "if error", click here < (link removed) NoYXRmaWVsZEByZWFkaW5nLmFjLnVrfDIyNjcxNDB8LTE4MjM2NDg5MTM=> . -- View this message in context: http://r.789695.n4.nabble.com/How-to-say-if-error-tp2266619p2267182.html Sent from the R help mailing list archive at Nabble.com. [[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.
