R-way to doing this?
If I understand your question properly, then you are looking for 'try' or 'tryCatch'. There is an example of using these on page 89 of 'The R Inferno'.
On 23/12/2010 04:13, Bogaso Christofer wrote:
Dear friends, hope I could be able to explain my problem through following example. Please consider this:
set.seed(1)
input<- rnorm(10)
input
[1] -0.6264538 0.1836433 -0.8356286 1.5952808 0.3295078 -0.8204684 0.4874291 0.7383247 0.5757814 -0.3053884
tag<- vector(length=10)
for(i in 1:10)
# if there is any ****error**** in evaluating "log(input[i])" (or
evaluating some function) then tag[i] = 1, otherwise tag[i] = 0
Therefore my "tag" vector should like: tag[1]=1, tag[2]=0, tag[3]=1,
tag[4]=0, tag[5]=0.......
Actually R returns logarithm of a negative number as NaN, however in this
example please consider R returns error when it encounters logarithm of a
negative number.
Is there any way to do above task?
Thanks and regards,
[[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.
Patrick Burns pburns at pburns.seanet.com twitter: @portfolioprobe http://www.portfolioprobe.com/blog http://www.burns-stat.com (home of 'Some hints for the R beginner' and 'The R Inferno')