search for: tp18939882p18940830

I want to create a vecor with frequencies. I have tried this: a <- c(1,1,1,1,2,3,4,5,5) b <- table(a) print (b[1]) which results in: > print (b[1]) 1 4 The only thing I want is the 4. So this seems obvious: print (b[1,2]) but it does not work: Error in b[1, 2] : incorrect number of dimensions How do I get a vector or how do I refer to the "4" without getting the