[R] Frequency vector

dennis11 detebeest at hotmail.com
Tue Aug 12 10:21:29 CEST 2008

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])

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 "1"
label as well?
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