passing dataframe col name through cbind()

cbind(scores[,1,drop = FALSE], scores[,2:3])

Hi all ---

I note that the column name of the first column in a dataframe does not necessarily get passed on when using cbind (example below)?

I'm looking for help in clarifying why this behavior occurs, and how I can get all col names, including the first, passed on to the result?while I suspect it's obvious and documented to the cognoscenti, it's puzzling me?

Many thanks for any help on this...
Eric

scores <- data.frame(name=c("Bob","Ron","Bud"),round1=c(40,30,20),round2=c(5,6,4)) #some toy data

scores

?name round1 round2
1 ?Bob ? ? 40 ? ? ?5
2 ?Ron ? ? 30 ? ? ?6
3 ?Bud ? ? 20 ? ? ?4

cbind(scores[,1],total=rowSums(scores[,2:3]),scores[,2:3])

?scores[, 1] total round1 round2
1 ? ? ? ? Bob ? ?45 ? ? 40 ? ? ?5
2 ? ? ? ? Ron ? ?36 ? ? 30 ? ? ?6
3 ? ? ? ? Bud ? ?24 ? ? 20 ? ? ?4

...first column renamed...

?yet this passes all column names:

cbind(scores[,1:3])

?name round1 round2
1 ?Bob ? ? 40 ? ? ?5
2 ?Ron ? ? 30 ? ? ?6
3 ?Bud ? ? 20 ? ? ?4

?but this doesn't:

cbind(scores[,1],scores[,2:3])

?scores[, 1] round1 round2
1 ? ? ? ? Bob ? ? 40 ? ? ?5
2 ? ? ? ? Ron ? ? 30 ? ? ?6
3 ? ? ? ? Bud ? ? 20 ? ? ?4


--
?Eric Rupley
?University of Michigan, Museum of Anthropology
?1109 Geddes Ave, Rm. 4013
?Ann Arbor, MI 48109-1079

?erupley at umich.edu
?+1.734.276.8572