R devel - Jan 2012 - ftable.formula

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)

At least this is correct :-)

 ftable(UCBAdmissions, Dept ~ Gender + Admit)

But yes: the formula
ftable(UCBAdmissions, Gender + Admit ~ Dept)

should see "The left and right hand side of formula specify the column and
row variables, respectively"

# demo of right-hand side bug

ftable(UCBAdmissions, Gender + Admit ~ Dept) # "Dept" should be in the
rows...
                Dept   A   B   C   D   E   F
Admit    Gender                             
Admitted Male        512 353 120 138  53  22
         Female       89  17 202 131  94  24
Rejected Male        313 207 205 279 138 351
         Female       19   8 391 244 299 317


Also, the example appears not to be a correct use of the "." shortcut.

x <- ftable(Survived ~ ., data = Titanic)
# Error in ftable.formula(Survived ~ ., data = Titanic) : 
#  cannot use dots in formula with given data

Also "Survived" should be "survived"
And in this example, all vars should be lower-case

ftable(Sex ~ Class + Age, data = x)

t

On 26 Jan 2012, at 22:31, Brett Presnell wrote:
> 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.