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2005 May 06
2
2 simple questions
Please excuse what I'm sure are very easy questions but I'm relatively new
to the R environment.
How can I view a range of list elements, but not all. e.g., I had a matrix
of patients and then split them out by patient id. I know I can do
patlist[[1]] to see the first one, but how can I view, say, the first ten
patients?
My other question is how to count how many patients have a record in which
a certain condition holds. E.g., I was trying something like this to get a
count:
ctr<-0
temp<-lapply(mylist, function(x){is.na(x$date1[1...