?tryCatch
As in:
> tryCatch(uniroot( function(x) x^2+1, lower=1, upper=2 )$root,
> error=function(e){warning(conditionMessage(e)); NA})
Warning in value[[3L]](cond) :
f() values at end points not of opposite sign
[1] NA
> tryCatch(uniroot( function(x) x^2-1.5, lower=1, upper=2 )$root,
> error=function(e){warning(conditionMessage(e)); NA})
[1] 1.224745
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
> -----Original Message-----
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
> Behalf
> Of asafwe
> Sent: Thursday, November 01, 2012 1:00 PM
> To: r-help@r-project.org
> Subject: [R] What does uniroot return when an error occurs
>
> Hi,
>
> I'm using the uniroot function, and would like to detect an error which
> occurs, for instance, when the values at endpoints are not of opposite
> signs. For example:
>
> uniroot( function(x) x^2+1, lower=1, upper=2 ).
>
> I want to say something like:
>
> if "error in uniroot(...)" return NA else return uniroot$root
>
> Thanks a lot!
>
> Asaf
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/What-does-uniroot-
> return-when-an-error-occurs-tp4648168.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
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> 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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and provide commented, minimal, self-contained, reproducible code.
