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
erup...@umich.edu
+1.734.276.8572
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