[Rd] ftable.formula

[Brett Presnell]

I apologize in advance if this is the wrong forum for this
report/request, and for the fact that I have not read the code for
ftable.formula in any detail.

>From reading the documentation for ftable.formula, I expected that the
following two calls to ftable would produce the same results:

data(UCBAdmissions)
ftable(UCBAdmissions, row.vars = "Dept", col.vars = c("Gender", "Admit"))
ftable(UCBAdmissions, Gender + Admit ~ Dept)

Is this a bug or the intended behavior?  I prefer the formula interface,
so I would be happiest if the output was the same for the two calls.
However, if this is the intended behavior, then I think that the
documentation should be clearer on this point.

FWIW:

platform       x86_64-pc-linux-gnu          
arch           x86_64                       
os             linux-gnu                    
system         x86_64, linux-gnu            
status                                      
major          2                            
minor          14.1                         
year           2011                         
month          12                           
day            22                           
svn rev        57956                        
language       R                            
version.string R version 2.14.1 (2011-12-22)