[R] DROP OBSErVATIONs IN A GROUP

[Ben Bolker]

David Winsemius <dwinsemius <at> comcast.net> writes:

> 
> The strategy of cbind vectors as an argument to data.frame and then  
> naming them seems wasteful and error prone. Why not:
> 
>   z <- data.frame(n=factor(n),y=y)
> # all one step, no issues about every element needing to be the same  
> mode
> # and not removing attributes that matrix class imposes.
> 

  And you don't actually need to name the elements if their names
will match their symbol in the call, i.e.

  z <- data.frame(n=factor(n),y)

should give identical results.