[R] To Try or to TryCatch, I have tried to long

R. Michael Weylandt michael.weylandt at gmail.com
Wed Dec 7 05:09:40 CET 2011


This also might be of help:

http://mazamascience.com/WorkingWithData/?p=912

Michael

On Tue, Dec 6, 2011 at 3:02 PM, ROLL Josh F <JRoll at lcog.org> wrote:
>  Thank for the links.  I reread one I found yesterday about changing the options parameter to options(warn = 2) and that allows the try() function to see a warning the same way as an error so problem solved using the existing code.
>
> Cheers,
>  Josh
>
> -----Original Message-----
> From: William Dunlap [mailto:wdunlap at tibco.com]
> Sent: Tuesday, December 06, 2011 11:42 AM
> To: gleynes+r at gmail.com; ROLL Josh F
> Cc: r-help at r-project.org
> Subject: RE: [R] To Try or to TryCatch, I have tried to long
>
> Or, Google for 'R catching warnings' and third entry is the excellent
>  http://www.stats.uwo.ca/faculty/murdoch/software/debuggingR/
>
> Bill Dunlap
> Spotfire, TIBCO Software
> wdunlap tibco.com
>
>> -----Original Message-----
>> From: r-help-bounces at r-project.org
>> [mailto:r-help-bounces at r-project.org] On Behalf Of William Dunlap
>> Sent: Tuesday, December 06, 2011 11:38 AM
>> To: gleynes+r at gmail.com; ROLL Josh F
>> Cc: r-help at r-project.org
>> Subject: Re: [R] To Try or to TryCatch, I have tried to long
>>
>> Look at the archives of this mailing list for a discussion entitled
>> 'Stack trace?' on Nov 9-10 of this year.
>>
>> Bill Dunlap
>> Spotfire, TIBCO Software
>> wdunlap tibco.com
>>
>> > -----Original Message-----
>> > From: r-help-bounces at r-project.org
>> > [mailto:r-help-bounces at r-project.org] On Behalf Of Gene Leynes
>> > Sent: Tuesday, December 06, 2011 10:58 AM
>> > To: ROLL Josh F
>> > Cc: r-help at r-project.org
>> > Subject: Re: [R] To Try or to TryCatch, I have tried to long
>> >
>> > I've had the same problem in other cases.
>> >
>> > Does anyone know how to catch warnings as well as errors?
>> >
>> > On Tue, Dec 6, 2011 at 12:34 PM, ROLL Josh F <JRoll at lcog.org> wrote:
>> >
>> > > **
>> > > Agreed.  But what I am trying to control is when I get a warning.
>> > > I want to do something different if a warning OR an error pop up?  Any ideas?
>> > >
>> > > Cheers
>> > >
>> > >  ------------------------------
>> > > *From:* gleynes at gmail.com [mailto:gleynes at gmail.com] *On Behalf Of
>> > > *Gene Leynes
>> > > *Sent:* Tuesday, December 06, 2011 10:27 AM
>> > > *To:* ROLL Josh F
>> > > *Cc:* r-help at r-project.org
>> > > *Subject:* Re: [R] To Try or to TryCatch, I have tried to long
>> > >
>> > > I think the problem is that it's only a warning and not an error.
>> > >
>> > > result_<-list()
>> > > for(i in 1:10){
>> > >      if(inherits(try(sqrt(9-i),silent=TRUE),"try-error")){
>> > >      #If sqrt fails
>> > >      cat('fail',i,'\n')
>> > >      result_[[i]]<-0 } else {
>> > >      #If sqrt succeeds
>> > >      cat('succeed',i,'\n')
>> > >      result_[[i]] <- 1 }
>> > > }
>> > > result_
>> > >
>> > > On Tue, Dec 6, 2011 at 11:11 AM, LCOG1 <jroll at lcog.org> wrote:
>> > >
>> > >> So after about 4 hours struggling with Try and TryCatch I am
>> > >> throwing in the towel.  I have a more complicated function that
>> > >> used logspline through iterative distributions and at some point
>> > >> the logspline doesnt function correctly for some subsets but is
>> > >> fine with others so I need to be able to identify when the error
>> > >> occurs and stop curtailing the distribution and I think this Try
>> > >> or TryCatch should do the trick but I think I am missing
>> > >> something here. A simple example
>> > >>
>> > >>
>> > >> result_<-list()
>> > >> for(i in 1:10){
>> > >>          if(inherits(try(sqrt(9-i),silent=TRUE),"try-error")){
>> > >>                #If sqrt fails
>> > >>                result_[[i]]<-0 } else {
>> > >>                #If sqrt succeeds
>> > >>                result_[[i]] <- 1 } }
>> > >>
>> > >>
>> > >> I would expect this to fail only when i > 9 but succeeds  each time.  DO i
>> > >> need to specify something different where "try-error" resides?  Thanks
>> > >> guys
>> > >>
>> > >> Cheers,
>> > >>  Josh
>> > >>
>> > >>
>> > >> --
>> > >> View this message in context:
>> > >> http://r.789695.n4.nabble.com/To-Try-or-to-TryCatch-I-have-tried-to-long-tp4165578p4165578.html
>> > >> Sent from the R help mailing list archive at Nabble.com.
>> > >>
>> > >> ______________________________________________
>> > >> R-help at 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.
>> > >>
>> > >
>> > >
>> >
>> >     [[alternative HTML version deleted]]
>> >
>> > ______________________________________________
>> > R-help at 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.
>>
>> ______________________________________________
>> R-help at 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.
>
> ______________________________________________
> R-help at 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.



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