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@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.