On Mar 27, 2012, at 2:36 PM, C Lin wrote:
I'm sorry. I do appreciate you are trying to help. However, what I
am trying to do is not exactly the same as in FAQ.
If I do the following:
test2=list(numeric(0),c(10,20));
test1=list(c(1),c(1,2,3,4));
for (i in 1:2){
tryCatch(wilcox.test(test1[[i]],test2[[i]]),error = function(e)
NULL);
}
I cannot get the p-value of the test for i=2.
I say again READ THE HELP PAGE FOR wilcox.test (and I even suggested
the section where you would find the answer.)
test2=list(numeric(0),c(10,20));
test1=list(c(1),c(1,2,3,4));res <- list()
for (i in 1:2){
res <- tryCatch(wilcox.test(test1[[i]],test2[[i]])$p.value, error =
function(e) NULL);
}
res
--
David
any other input? anyone?
Thanks,
Lin
CC: r-help@r-project.org
From: dwinsem...@comcast.net
To: bac...@hotmail.com
Subject: Re: [R] ignore error getting next result
Date: Tue, 27 Mar 2012 14:26:40 -0400
On Mar 27, 2012, at 2:18 PM, C Lin wrote:
As a matter of fact, I did read the FAQ. However, in the FAQ coef()
is used to return the coefficients of lm() if it succeeded.
I cannot find similar function for pvalue.
So your question has nothing to do with the subject line? If you are
trying to get information about the object returned by the
wilcox.test function, then you should be looking at the help page
in the Value section for that function.
--
David.
> CC: r-help@r-project.org
> From: dwinsem...@comcast.net
> To: bac...@hotmail.com
> Subject: Re: [R] ignore error getting next result
> Date: Tue, 27 Mar 2012 13:40:39 -0400
>
>
> On Mar 27, 2012, at 12:56 PM, C Lin wrote:
>
> >
> > Dear All,
> >
> > How do I ignore an error and still getting result of next
iteration.
> > I am trying to do wilcox.test on a loop, when the test fail, I
would
> > like to continue doing the next iteration and getting the p-value.
> > I tried to do tryCatch or try but I cannot retrieve the p-value if
> > the test is not fail.
> >
> > sample code:
> >
> > test2=list(numeric(0),c(10,20));
> > test1=list(c(1),c(1,2,3,4));
> > for (i in 1:2){
> > wtest=wilcox.test(test1[[i]],test2[[i]])
> > }
> >
> > i=1 will fail, I want to ignore this and get the pvalue for i=2.
>
> Please read the FAQ entry And you would be advise to read through
the
> rest of the FAQ as well.
>
>
http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-can-I-capture-or-ignore-errors-in-a-long-simulation_003f
>
>
> >
> > Thanks,
> > Lin
> > [[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, MD
> West Hartford, CT
>
David Winsemius, MD
West Hartford, CT
David Winsemius, MD
West Hartford, CT
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