Hi,
try ?table
# for example
(s3 <- table(s))
# and if you want a single value
s3["a"]
# or
s3[1]
HTH,
Colin.
________________________________
From: r-help-boun...@r-project.org on behalf of Marc Giombetti
Sent: Tue 17/11/2009 22:55
To: r-help@r-project.org
Subject: [R] Basic question on nominal data
Hello everybody,
I am new to R and I have a very basic question, but I couldn't get
this to work.
Let's say I have a vector
s = c("a","a","a","b","b","c","c","c","c")
s1 <- factor(s)
s2 <- summary(s1) leads to the following
a b c
3 2 4
How can I access the different aggregated values for a b and c? I am
not quite sure if the factor method is the right approach.
I tried to use s2$a but it didn't work.
Any suggestions?
Thanks a lot for your help
Marc
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