Is there simply a "Mode" function in R? For 4d. What is the range? Initially, I thought it would be 0 -> Inf Since ln(0) = error and ln(Inf) = Inf.. this seems like an issue! *From:* gov2001-l-bounces at lists.fas.harvard.edu [mailto: gov2001-l-bounces at lists.fas.harvard.edu] *On Behalf Of *Johnathan Boysielal *Sent:* Monday, February 16, 2009 8:31 PM *To:* gov2001-l at lists.fas.harvard.edu *Subject:* Re: [gov2001-l] R command for tabulating frequency If you have a vector like n <- c(1, 2, 3, 4, 1, 2, 3, 2, 1, 2) q <- table(n);q # will generate a frequency table n 1 2 3 4 3 4 2 1 You can also apply operations like max() or mean() to q, and use it to subset the original vector. E.g.: unique(n[q>2]) #will list all the elements of n appearing more than 2 times [1] 1 2 Hope that helps, John On Mon, Feb 16, 2009 at 6:39 PM, Rachel West <rwest817 at gmail.com> wrote: Very elementary question, I'm sure, but I'm new to R : What is a command in R which would return the frequency elements in a vector, and could be applied with "any" to recognize when a threshold frequency has been achieved? For example, if I have a vector n <- [1, 2, 3, 4, 1, 2, 3, 2, 1, 2], is there a command that will output the number of instances of the most frequent element (i.e, "2" is repeated 4 times), or something similarly useful? Thanks, Rachel _______________________________________________ gov2001-l mailing list gov2001-l at lists.fas.harvard.edu http://lists.fas.harvard.edu/mailman/listinfo/gov2001-l _______________________________________________ gov2001-l mailing list gov2001-l at lists.fas.harvard.edu http://lists.fas.harvard.edu/mailman/listinfo/gov2001-l