[R] Column sums from a data frame (without the headers)

[Gabor Csardi]

colSums gives you exactly what you want, but the vector is *named*.
You can use it like a not-named numeric vector, without much trouble.
If you still want to get rid of the names see ?unname

G.

On Fri, Feb 29, 2008 at 12:02:46PM -0500, Jason Horn wrote:
> Does anyone know how to get a vector of column sum from a data frame?   
> You can use colSums(), but this gives you a object of type "numeric"  
> with the column labels in the first row, and the sums in the second  
> row.  I just want a vector of the sums, and I can't figure out a way  
> to index the "numeric" object.
> 
> Thanks!
> 
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-- 
Csardi Gabor <csardi at rmki.kfki.hu>    UNIL DGM