Hello there!
I'm creacting a loop for(i in 1:n){...}within which I build a nls model at
each iteration. for some of the values of i, the algoritm in the nls function
doesn't converge or cannot find a solution and consequently an error message
is produced, and so my loop is interupted. The errors don't really matter to
me as all the other values might still be useful and therefore I want to ignore
the errors, so that that the return of the models for which no solution is found
should just be NA values, so that I get a value for every i. How can I turn off
the error message and make return NA values instead?
Thanks in advance for your help...
Fabian
On Tue, 26 Sep 2006, Mollet, Fabian wrote:> Hello there! > > I'm creacting a loop for(i in 1:n){...}within which I build a nls model > at each iteration. for some of the values of i, the algoritm in the nls > function doesn't converge or cannot find a solution and consequently an > error message is produced, and so my loop is interupted. The errors > don't really matter to me as all the other values might still be useful > and therefore I want to ignore the errors, so that that the return of > the models for which no solution is found should just be NA values, so > that I get a value for every i. How can I turn off the error message and > make return NA values instead? >This is a FAQ (7.32) -thomas
Try ?try On 26/09/06, Mollet, Fabian <Fabian.Mollet at wur.nl> wrote:> Hello there! > > I'm creacting a loop for(i in 1:n){...}within which I build a nls model at each iteration. for some of the values of i, the algoritm in the nls function doesn't converge or cannot find a solution and consequently an error message is produced, and so my loop is interupted. The errors don't really matter to me as all the other values might still be useful and therefore I want to ignore the errors, so that that the return of the models for which no solution is found should just be NA values, so that I get a value for every i. How can I turn off the error message and make return NA values instead? > > Thanks in advance for your help... > > Fabian > > ______________________________________________ > R-help at stat.math.ethz.ch 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 Barron Said Business School University of Oxford Park End Street Oxford OX1 1HP