[R] with for objects

[Hadley Wickham]

Why not? A data frame is a convenient way of grouping related data 
together.  So is an object.  Writing with(expr, a + b) is just shorthand 
for writing expr$a + expr$b, so why shouldn't I be able to write 
with(obj, a + b) for obj at a + obj at b? 

I'm not keen to write a plot method because I'm trying to create a more 
generalised way of exploring data stored in objects.  For example, with 
microarray data from bioconductor, I might want to do one MA for all the 
data, or one for each printtip.

Hadley

Roger D. Peng wrote:

> I'm not sure S4 objects are really meant to be used this way.  Maybe 
> you  could write a plot method?
>
> -roger