On Mar 29, 2012, at 9:30 AM, Jung, Yongsuhk wrote:
Dear Members of the R-Help,
While using a R function - 'aggregate' that you developed, I become
to have a question.
In that function,
aggregate(x, by, FUN, ..., simplify = TRUE)
I was wondering about what type of FUN I should write if I want to
get "the most frequent value of the subgroup" as a summary
statistics of the subgroups.
Something along the lines of
function(x){ tbl <- table(x); retrun(names(tbl)[which.max(tbl)] }
You could also search for definitions that have appeared over the
years in rhelp for a mode function (but not the existing mode function
which is not designed to deliver what you request.)
[[alternative HTML version deleted]]
--
David Winsemius, MD
West Hartford, CT
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