[R] Barplot - Can't figure it out

[Peter Dalgaard]

T Petersen <Innkeyp-r at yahoo.com> writes:

> Wow, I'm getting confused...The syntax Petr suggested does what I
> wanted, but things are stille wrong...Maybe a bug? Let me explain.
> 
> I got two vectors:
> 
> x = c(3, 3, 3, 4, 3, 4, 3, 4, 3, 4)
> 
> y = c(5, 2, 5, 5, 2, 2, 5, 5, 4, 2)
> 
> then I do the barplot you suggest
> 
> barplot(rbind(table(x), table(y)), beside=T)
> 
> but things are wrong(there is no bar for catagory "3") and I get an error message:
> Warning message: number of columns of result
>         not a multiple of vector length (arg 1) in: rbind(table(Quest1), table(Quest2))
> 
> Any ideas?

Yes. Tabulation of numerics only counts values that are present in
data (what else could it do?). Try it with table(factor(x,
levels=1:5)), etc.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907