Re: [R] frequence of patterns in a vector

> x <- c("ABC", "ABC", "ABC", "A02", "ABC", "RCA", "ABC", "ABC") > table(x) x A02 ABC RCA 1 6 1 > table(x)[c("ABC", "A02", "RCA")] x ABC A02 RCA 6 1 1 On May 29, 2009, at 2:15 PM, liujb wrote: Dear R users, Suppose I have a vector that consists of characters like ABC, A02, RCA,

[R] frequence of patterns in a vector

Dear R users, Suppose I have a vector that consists of characters like ABC, A02, RCA, etc., and there are about 700 of possible characters. For example, x <- c("ABC", "ABC", "ABC", "A02", "ABC", "RCA", "ABC", "ABC") I'd like to get a frequency matrix that looks something like this: ABC 6 A02