On 12-01-16 10:34 AM, Marion Wenty wrote:
Dear People,
I have got the following example for a vector and the index of the TRUE
element:
Myvector<- c(FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,TRUE)
which(Myvector)
Now I would like to find out the same for a list:
Mylist<- list(FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,TRUE)
...
Does anyone know how to do this?
What are the possible values in your list? If it always contains TRUE
and FALSE and nothing else, then unlist() will work (as suggested by
others). If there are other possibilities, unlist() might mess up, e.g.
unlist( list(TRUE, 1:3, FALSE) )
won't give a vector of length 3. In that case,
which(sapply(MyList, isTRUE) )
might be what you want.
Duncan Murdoch
______________________________________________
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.
