Hi All:
I feel like there must be a slick R-native no-loop way to get the counts
for the entries in a factor, but I'm unable to see how. Right now I'm
doing this:
hn.ent<-data.frame(rep(0,length(levels(hnf))), row.names=levels(hnf))
colnames(hn.ent)<-c("count")
for (lev in levels(hnf)) {
hn.ent[lev,"count"] <- sum(lev == hnf)
}
I'm sure there's a better way, but I don't know it. Can anyone help?
Also, why does hn.ent[lev,"count"] work and hn.ent$count[lev] does not?
In a related problem, I have a vector of strings, and want a vector of
the strings combined. That is, I have c("a", "b", "c", "d") and I want
c("ab", "bc", "cd"). I see this is easy with numbers, but paste() is
the only way I see to stick strings together, and I don't get how I'd
use them without a loop.
Many thanks,
-tom
--
------------------------
tomfool at as220 dot org
http://sgouros.com
http://whatcheer.net
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